US20120298326A1 - Regenerative heat exchanger with a rotor seal with forced guidance - Google Patents
Regenerative heat exchanger with a rotor seal with forced guidance Download PDFInfo
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- US20120298326A1 US20120298326A1 US13/303,127 US201113303127A US2012298326A1 US 20120298326 A1 US20120298326 A1 US 20120298326A1 US 201113303127 A US201113303127 A US 201113303127A US 2012298326 A1 US2012298326 A1 US 2012298326A1
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- rotor
- seal
- heat exchanger
- regenerative heat
- exchanger according
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- 230000001172 regenerating effect Effects 0.000 title claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 238000005096 rolling process Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Classifications
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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
Definitions
- the disclosed subject matter relates to a regenerative heat exchanger including a heat accumulator arranged as a rotor, rotatably held around a central rotational axis, and configured to transmit a heat of at least one gas volume flow passing through the rotor to another gas volume flow passing through the rotor.
- Regenerative heat exchangers of this kind are used for heat transmission from at least one gas volume flow to at least one other gas volume flow.
- a rotating heat accumulator which is the so-called rotor, is heated in an alternating fashion by at least one gas volume flow and cooled again by at least one other gas volume flow, with thermal energy being transmitted from the one to the other gas volume flow.
- the rotor comprises two face sides, an outside jacket and usually a segmented portion for accommodating the heat accumulator masses.
- the rotor is rotatably held around a central rotational axis, with said rotational axis preferably be aligned vertically.
- a sealing system with core, radial, and/or circumferential seals is provided.
- the radial seals are arranged on the face sides of the rotor and are provided to prevent short-circuit volume flows between the gas volume flows.
- the circumferential seals are arranged on the face edges of the rotor and are provided to prevent leakage volume flows into the rotor housing or into the ambient environment. The seals are arranged in a stationary manner with respect to the rotating rotor.
- the sealing system for the rotor comprises at least one seal which is fixed in relation to the rotor and which is pressed against the rotor or a component belonging to the rotor (e.g. by effective weight, spring cylinders, actuators and the like) and which is supported by a plurality of rollers on the rotatable rotor or on a component belonging to the rotor, thereby being provided with forced guidance predominantly in the axial direction.
- This means that the respective seal is quasi subject to forced guidance, which leads in operation to the consequence that the respective seal continuously follows the thermally induced rotor deformation at a constant distance which is predetermined by the rollers, as a result of which a small and constant sealing gap is ensured.
- minimal sealing gaps can be realized with a comparatively low amount of constructional effort, so that short-circuit and/or leakage volume flows will occur to an exceptionally low extent.
- the gas quantity to be removed will be reduced.
- the sealing gas quantity will be reduced when using sealing gas.
- the disclosed subject matter has proven to be very beneficial to mounting and offers simple handling and maintenance. It is a further advantage that it is possible to omit the electromechanical and mostly sensor-controlled adjusting devices for the seals which are included in many conventional designs.
- the rollers are arranged in the fixed seal and/or are fastened to the fixed seal.
- the rollers can be held with a shaft on the seal or a component belonging to the seal.
- These rolling surfaces can be especially arranged on exchangeable wearing plates which are fastened to the rotor (a rotor body or a component belonging to the rotor).
- a reverse arrangement of rollers and running surfaces can be provided.
- the individual rollers may be arranged at least in the region and especially only in the region of the actuating points or pressing points of the seal against the rotor.
- the seal which is supported by means of the rollers is preferably a radial seal.
- the seal which is supported by means of the rollers is especially a circumferential seal. It is also possible to simultaneously support both the radial seals and also the circumferential seals at least on one rotor side by means of rollers on the rotating rotor.
- the radial seal is movably arranged in the axial direction.
- the coupling between the circumferential seal and the radial seal may occur via a mechanical actuating mechanism, which transmits axial movements of the circumferential seal via at least one actuating bar or the like onto the respective radial seal.
- the sealing system on one rotor side can therefore perform movements which follow the rotor movements in the axial direction.
- the preferably radially extending actuating bar is ideally arranged in the rotor housing of the regenerative heat exchanger, namely between the respective radial seal and the wall of the housing, wherein a sealing sleeve can also be arranged in this area.
- FIG. 1 illustrates a first embodiment of a regenerative heat exchanger
- FIG. 2 illustrates a second embodiment of a regenerative heat exchanger
- FIG. 3 illustrates a third embodiment of a regenerative heat exchanger
- FIG. 4 illustrates a fourth embodiment of a regenerative heat exchanger.
- FIG. 1 illustrates a regenerative heat exchanger, designated with reference numeral 1 , of which only one symmetrical half is illustrated.
- the regenerative heat exchanger 1 comprises a rotor 2 which is rotatably held around a vertical rotational axis A and is arranged in a rotor housing 3 .
- Several gas volume flows flow through the rotor 2 , with heat from at least one gas volume flow being transmitted to at least one other gas volume flow.
- a sealing system with radial seals 4 and circumferential seals 5 is provided for sealing the gas volume flows V guided through the regenerative heat exchanger 1 .
- the radial seals 4 are arranged on the face sides of the rotor 2 and are provided to prevent short-circuit volume flows between the gas volume flows V.
- the circumferential seals 5 are arranged on the face edges of the rotor 2 and are provided to prevent leakage volume flows into the rotor housing 3 .
- the radial seals 4 and the circumferential seals 5 are arranged in a stationary manner with respect to the rotating rotor 2 .
- the radial seals 4 and the circumferential seals 5 preferably form an inherently closed sealing frame, together with optional core seals (not illustrated).
- the seals which are arranged on the upper face side and on the bottom face side of the rotor 2 are arranged in a substantially identical manner. Unless stated otherwise, the following explanations relate by way of example only to the upper seals and apply analogously to the bottom seals.
- the upper radial seal 4 is arranged as a sealing plate and is fastened to or suspended on the rotor housing 3 by means of several equally spaced actuating members or spring cylinders 7 , 8 and 9 .
- the bottom radial seal 4 is supported respectively by spring cylinders or the like.
- Each spring cylinder 7 , 8 or 9 represents an actuating point for the radial seal 4 . It is also possible to use counterweights instead of the spring cylinder 7 , 8 and 9 .
- the radial seal 4 is arranged in the regional direction with joints 41 and 42 which subdivide radial seal 4 into several sections. The radial seal 4 is thereby able to adjust to thermally induced rotor deformations.
- radial seal 4 without joints and in a flexible way.
- a sealing or expansion sleeve (see reference numeral 10 in the bottom region of the heat exchanger) can be arranged between the radial seal 4 and the wall of the rotor housing 3 , which sleeve will compensate the relative movements of the middle seal in relation to the wall the housing.
- the circumferential seal 5 is arranged as an annulus-shaped sealing frame and is fastened to or suspended on the rotor housing 3 with several actuating members or spring cylinders 11 which are evenly distributed in the circumferential direction.
- the circumferential seal 5 can be provided with segments or joints, or be arranged in a joint-free and flexible way.
- the circumferential seal 5 or the sealing frame provides sealing against a rotor flange 6 which protrudes radially to the outside from the rotor body.
- Each spring cylinder 11 represents an actuating point for the circumferential seal 5 , with the circumferential seal 5 being pressed against the rotor flange 6 by means of excess weight (weight less actuating force in the spring cylinders 11 ).
- the circumferential seal 5 is supported by means of a plurality of rollers 12 on the rotor flange 6 which belongs to the rotor 2 .
- a roller 12 is preferably provided at least in the region of every single actuating point.
- the rollers 12 are arranged in a recess in the circumferential direction 5 and are preferably also rotatably held therein (e.g., by means of a shaft).
- the rollers 12 will roll off on a wearing plate 14 which is fastened to the rotor flange 6 .
- the wearing plate 14 is provided with a segmented configuration in the circumferential direction.
- Such a wearing plate can also be provided on a corresponding rolling surface in the circumferential seal 5 . It is also possible that the rollers 12 are guided in the manner of a sandwich between two wearing plates which are spaced from one another in the axial direction a.
- a mechanical coupling of the radial seals 4 with the circumferential seals 5 is provided both on the upper face side and also on the bottom face side of the rotor 2 , for which purpose the circumferential seals 5 and the radial seals 4 are frictionally connected with one another.
- the radial seals 4 will follow the forcibly guided movements of the circumferential seals 5 in the axial direction a, for which purpose the radial seals 4 are movably held in the axial direction a. Sealing of the rotor 2 is considerably increased thereby and leakages are considerably reduced.
- FIG. 2 illustrates a second embodiment in which the rollers 12 fastened to the circumferential seal 5 are guided between two axially spaced rotor flanges 61 and 62 with respective rolling surfaces. This enables a “direct” forced guidance for the circumferential seal 5 . In all other respects the explanations made in connection with the first embodiment illustrated in FIG. 1 shall apply.
- the third embodiment illustrated in FIG. 3 also comprises a mechanical coupling of the circumferential seals 5 with the radial seals 4 .
- the circumferential seals 5 are respectively connected with a radially extending actuating bar 16 , which causes an adjustment of the respective radial seal 4 (on the same rotor side) in the axial direction a via several actuating members 17 .
- the forcibly guided movement of a circumferential seal 5 is transmitted according to the lever ratios onto the respective radial seal 4 or its individual sections, for which purpose the radial seals 4 are movably held in the axial direction a or are also arranged in a flexible way for example.
- the radially extending actuating bars 16 are arranged in the interior of the rotor housing 3 . In some embodiments, the actuating bars 16 can also be arranged outside of the housing 3 .
- FIG. 4 illustrates a fourth embodiment in which the radial seals 4 are also supported by means of rollers 18 on the face sides of the rotor 2 .
- the radial seals 4 can be forcibly guided in operation at a constant distance from the face sides of the rotor 2 and can continuously follow the axial rotor deformations.
- the rollers 18 are arranged in the region of the actuating points or spring cylinders 7 , 8 and 9 .
- Corresponding rolling surfaces are arranged on face sides of the rotor 2 . These rolling surfaces can be arranged on wearing plates 19 , as illustrated, by way of example, for the bottom, radial inner roller 18 .
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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)
- Turbine Rotor Nozzle Sealing (AREA)
- Sealing Devices (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A regenerative heat exchanger, including a heat accumulator arranged as a rotor, rotatably held around a central rotational axis, and configured to transmit a heat of at least one gas volume flow passing through the rotor to another gas volume flow passing through the rotor, and including a sealing system for the rotor including at least one seal which is fixed in relation to the rotor, is pressed against the rotor, and is supported by a plurality of rollers on the rotatable rotor.
Description
- This application claims priority to foreign European Patent Application No. EP 10015001.0, filed on Nov. 25, 2010, the disclosure which is incorporated by reference in its entirety.
- The disclosed subject matter relates to a regenerative heat exchanger including a heat accumulator arranged as a rotor, rotatably held around a central rotational axis, and configured to transmit a heat of at least one gas volume flow passing through the rotor to another gas volume flow passing through the rotor.
- Regenerative heat exchangers of this kind are used for heat transmission from at least one gas volume flow to at least one other gas volume flow. A rotating heat accumulator, which is the so-called rotor, is heated in an alternating fashion by at least one gas volume flow and cooled again by at least one other gas volume flow, with thermal energy being transmitted from the one to the other gas volume flow. As a result, one of the gas volume flows can be heated and another gas volume flow can be cooled. The rotor comprises two face sides, an outside jacket and usually a segmented portion for accommodating the heat accumulator masses. The rotor is rotatably held around a central rotational axis, with said rotational axis preferably be aligned vertically.
- To seal the gas volume flows guided through the regenerative heat exchanger, a sealing system with core, radial, and/or circumferential seals is provided. The radial seals are arranged on the face sides of the rotor and are provided to prevent short-circuit volume flows between the gas volume flows. The circumferential seals are arranged on the face edges of the rotor and are provided to prevent leakage volume flows into the rotor housing or into the ambient environment. The seals are arranged in a stationary manner with respect to the rotating rotor. As a result of a permanent relative movement between the rotor and these seals and a continuously changing thermal expansion of the rotor and consequently resulting uneven rotor deformations, high demands are placed on the sealing system in order to achieve a low amount of losses (leakages) and thus a high level of efficiency.
- Various sealing systems are known from the state of the art, which enable a relatively small sealing gap in operation between the seal and the rotor. Reference is made in this respect for example to European Patent Application Publication Nos.
EP 1 777 478 A1 andEP 2 177 855 A, the disclosures of each of which are incorporated by reference in their entireties. However, conventional sealing systems are frequently disproportionately complex and expensive in practice. - It is an object of the disclosed subject matter to provide a regenerative heat exchanger of the kind mentioned above with a simple and effective sealing system.
- This object is achieved by a regenerative heat exchanger in embodiments incorporating the features of
claim 1. Other aspects of embodiments of the disclosed subject matter are recited in the dependent claims. - In an embodiment of the disclosed subject matter, the sealing system for the rotor comprises at least one seal which is fixed in relation to the rotor and which is pressed against the rotor or a component belonging to the rotor (e.g. by effective weight, spring cylinders, actuators and the like) and which is supported by a plurality of rollers on the rotatable rotor or on a component belonging to the rotor, thereby being provided with forced guidance predominantly in the axial direction. This means that the respective seal is quasi subject to forced guidance, which leads in operation to the consequence that the respective seal continuously follows the thermally induced rotor deformation at a constant distance which is predetermined by the rollers, as a result of which a small and constant sealing gap is ensured.
- In accordance with the disclosed subject matter, minimal sealing gaps can be realized with a comparatively low amount of constructional effort, so that short-circuit and/or leakage volume flows will occur to an exceptionally low extent. In the case of regenerative heat exchangers with suction, the gas quantity to be removed will be reduced. Similarly, the sealing gas quantity will be reduced when using sealing gas. Moreover, the disclosed subject matter has proven to be very beneficial to mounting and offers simple handling and maintenance. It is a further advantage that it is possible to omit the electromechanical and mostly sensor-controlled adjusting devices for the seals which are included in many conventional designs.
- In another embodiment of the disclosed subject matter, it is preferably provided that the rollers are arranged in the fixed seal and/or are fastened to the fixed seal. The rollers can be held with a shaft on the seal or a component belonging to the seal. In another embodiment, it is further preferably provided that the rollers will roll off on at least one corresponding running or rolling surface on the rotor or a component belonging to the rotor, or are guided between two corresponding rolling surfaces which are axially spaced from one another. These rolling surfaces can be especially arranged on exchangeable wearing plates which are fastened to the rotor (a rotor body or a component belonging to the rotor). Similarly, a reverse arrangement of rollers and running surfaces can be provided.
- In order to ensure a minimal sealing gap, especially in critical regions in which the seal is pressed against the rotor (actuating points), the individual rollers may be arranged at least in the region and especially only in the region of the actuating points or pressing points of the seal against the rotor.
- The seal which is supported by means of the rollers is preferably a radial seal. The seal which is supported by means of the rollers is especially a circumferential seal. It is also possible to simultaneously support both the radial seals and also the circumferential seals at least on one rotor side by means of rollers on the rotating rotor.
- In another embodiment there is at least one circumferential seal which is supported by means of rollers on the rotor and is coupled with a radial seal on the same rotor side, such that the respective radial seal is co-moved during the axial movement of the circumferential seal in the axial direction. For this purpose, the radial seal is movably arranged in the axial direction. The coupling between the circumferential seal and the radial seal may occur via a mechanical actuating mechanism, which transmits axial movements of the circumferential seal via at least one actuating bar or the like onto the respective radial seal. The sealing system on one rotor side can therefore perform movements which follow the rotor movements in the axial direction. The preferably radially extending actuating bar is ideally arranged in the rotor housing of the regenerative heat exchanger, namely between the respective radial seal and the wall of the housing, wherein a sealing sleeve can also be arranged in this area.
- The invention will be explained in closer detail by reference to embodiments shown in the drawings, which show the following in the schematic partial sectional views:
-
FIG. 1 illustrates a first embodiment of a regenerative heat exchanger; -
FIG. 2 illustrates a second embodiment of a regenerative heat exchanger; -
FIG. 3 illustrates a third embodiment of a regenerative heat exchanger, and -
FIG. 4 illustrates a fourth embodiment of a regenerative heat exchanger. -
FIG. 1 illustrates a regenerative heat exchanger, designated withreference numeral 1, of which only one symmetrical half is illustrated. Theregenerative heat exchanger 1 comprises arotor 2 which is rotatably held around a vertical rotational axis A and is arranged in arotor housing 3. Several gas volume flows flow through therotor 2, with heat from at least one gas volume flow being transmitted to at least one other gas volume flow. A sealing system withradial seals 4 andcircumferential seals 5 is provided for sealing the gas volume flows V guided through theregenerative heat exchanger 1. Theradial seals 4 are arranged on the face sides of therotor 2 and are provided to prevent short-circuit volume flows between the gas volume flows V. Thecircumferential seals 5 are arranged on the face edges of therotor 2 and are provided to prevent leakage volume flows into therotor housing 3. Theradial seals 4 and thecircumferential seals 5 are arranged in a stationary manner with respect to the rotatingrotor 2. Theradial seals 4 and thecircumferential seals 5 preferably form an inherently closed sealing frame, together with optional core seals (not illustrated). The seals which are arranged on the upper face side and on the bottom face side of therotor 2 are arranged in a substantially identical manner. Unless stated otherwise, the following explanations relate by way of example only to the upper seals and apply analogously to the bottom seals. - The upper
radial seal 4 is arranged as a sealing plate and is fastened to or suspended on therotor housing 3 by means of several equally spaced actuating members orspring cylinders radial seal 4 is supported respectively by spring cylinders or the like.) Eachspring cylinder radial seal 4. It is also possible to use counterweights instead of thespring cylinder radial seal 4 is arranged in the regional direction withjoints radial seal 4 into several sections. Theradial seal 4 is thereby able to adjust to thermally induced rotor deformations. It is alternatively possible to arrange theradial seal 4 without joints and in a flexible way. There is a sealing gap S with the smallest possible size of the gap between theradial seal 4 and the upper face side of therotor 2. A sealing or expansion sleeve (seereference numeral 10 in the bottom region of the heat exchanger) can be arranged between theradial seal 4 and the wall of therotor housing 3, which sleeve will compensate the relative movements of the middle seal in relation to the wall the housing. - The
circumferential seal 5 is arranged as an annulus-shaped sealing frame and is fastened to or suspended on therotor housing 3 with several actuating members orspring cylinders 11 which are evenly distributed in the circumferential direction. Thecircumferential seal 5 can be provided with segments or joints, or be arranged in a joint-free and flexible way. In the illustrated embodiment, thecircumferential seal 5 or the sealing frame provides sealing against arotor flange 6 which protrudes radially to the outside from the rotor body. There is also a sealing gap with the smallest possible size of the gap between thecircumferential seal 5 and therotor flange 6 of therotor 2. Eachspring cylinder 11 represents an actuating point for thecircumferential seal 5, with thecircumferential seal 5 being pressed against therotor flange 6 by means of excess weight (weight less actuating force in the spring cylinders 11). - In order to ensure a defined sealing gap between the
circumferential seal 5 and therotor flange 6 irrespective of thermally induced rotor deformations, thecircumferential seal 5 is supported by means of a plurality ofrollers 12 on therotor flange 6 which belongs to therotor 2. Aroller 12 is preferably provided at least in the region of every single actuating point. As a result, the circumferential seal always maintains a constant distance from therotor flange 6 in operation and simultaneously at least follows the axial rotor deformations. - In the embodiment illustrated in
FIG. 1 , therollers 12 are arranged in a recess in thecircumferential direction 5 and are preferably also rotatably held therein (e.g., by means of a shaft). During the rotation of therotor 2, therollers 12 will roll off on a wearingplate 14 which is fastened to therotor flange 6. Preferably, the wearingplate 14 is provided with a segmented configuration in the circumferential direction. Such a wearing plate can also be provided on a corresponding rolling surface in thecircumferential seal 5. It is also possible that therollers 12 are guided in the manner of a sandwich between two wearing plates which are spaced from one another in the axial direction a. Notice should generally be taken when configuring and/or adjusting the spring cylinders 11 (and optionally also counterweights, if they are used) that the pressing pressure between therollers 12 and the corresponding rolling surfaces is kept at a low level. This is achieved for example in such a way that theupper spring cylinders 11 substantially absorb or at least reduce the weight load of thecircumferential seal 5. - In the embodiment illustrated in
FIG. 1 , a mechanical coupling of theradial seals 4 with thecircumferential seals 5 is provided both on the upper face side and also on the bottom face side of therotor 2, for which purpose thecircumferential seals 5 and theradial seals 4 are frictionally connected with one another. As a result, the radial seals 4 will follow the forcibly guided movements of thecircumferential seals 5 in the axial direction a, for which purpose theradial seals 4 are movably held in the axial direction a. Sealing of therotor 2 is considerably increased thereby and leakages are considerably reduced. -
FIG. 2 illustrates a second embodiment in which therollers 12 fastened to thecircumferential seal 5 are guided between two axially spacedrotor flanges circumferential seal 5. In all other respects the explanations made in connection with the first embodiment illustrated inFIG. 1 shall apply. - The third embodiment illustrated in
FIG. 3 also comprises a mechanical coupling of thecircumferential seals 5 with the radial seals 4. For this purpose, thecircumferential seals 5 are respectively connected with a radially extending actuatingbar 16, which causes an adjustment of the respective radial seal 4 (on the same rotor side) in the axial direction a via several actuatingmembers 17. As a result, the forcibly guided movement of acircumferential seal 5 is transmitted according to the lever ratios onto the respectiveradial seal 4 or its individual sections, for which purpose theradial seals 4 are movably held in the axial direction a or are also arranged in a flexible way for example. The radially extendingactuating bars 16 are arranged in the interior of therotor housing 3. In some embodiments, the actuating bars 16 can also be arranged outside of thehousing 3. -
FIG. 4 illustrates a fourth embodiment in which the radial seals 4 are also supported by means ofrollers 18 on the face sides of therotor 2. As a result, theradial seals 4 can be forcibly guided in operation at a constant distance from the face sides of therotor 2 and can continuously follow the axial rotor deformations. Therollers 18 are arranged in the region of the actuating points orspring cylinders rotor 2. These rolling surfaces can be arranged on wearingplates 19, as illustrated, by way of example, for the bottom, radialinner roller 18. - It is expressly understood that the features of the embodiments explained above in connection with the drawings can be combined with one another insofar as this does not lead to any technical inconsistency.
Claims (10)
1. A regenerative heat exchanger, comprising a heat accumulator arranged as a rotor, rotatably held around a central rotational axis, and configured to transmit a heat of at least one gas volume flow passing through the rotor to another gas volume flow passing through the rotor; and
a sealing system for the rotor comprising at least one seal which is fixed in relation to the rotor, is pressed against the rotor, and is supported by a plurality of rollers on the rotatable rotor.
2. The regenerative heat exchanger according to claim 1 , wherein the rollers are arranged in the seal and/or are fastened to the seal.
3. The regenerative heat exchanger according to claim 1 , wherein the rollers roll on at least one corresponding rolling surface on the rotor or are guided between two corresponding rolling surfaces which are axially spaced from one another.
4. A regenerative heat exchanger according to claim 3 , wherein at least one of the rolling surfaces is arranged on an exchangeable wearing plate.
5. A regenerative heat exchanger according to claim 1 , wherein the individual rollers are arranged at least in the regions of the actuating points of the seal.
6. A regenerative heat exchanger according claim 1 , wherein the seal supported by the rollers concerns a circumferential seal and/or a radial seal.
7. A regenerative heat exchanger according to claim 6 , wherein a supported circumferential seal is coupled with a radial seal, such that said radial seal is co-moved in the axial direction during axial movement of the circumferential seal.
8. A regenerative heat exchanger according to claim 7 , wherein the coupling between the circumferential seal and the radial seal occurs by a mechanical actuating mechanism which transmits the axial movement of the circumferential seal via an actuating bar to the radial seal.
9. A regenerative heat exchanger according to claim 8 , wherein the actuating bar is arranged within a rotor housing enclosing the rotor.
10. A regenerative heat exchanger according to claim 1 , further comprising at least one sealing sleeve arranged between the seal and the rotor housing.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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EP10015001.0 | 2010-11-25 | ||
EP10015001.0A EP2458315B1 (en) | 2010-11-25 | 2010-11-25 | Regenerative heat exchanger with forced rotor seal |
Publications (1)
Publication Number | Publication Date |
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US20120298326A1 true US20120298326A1 (en) | 2012-11-29 |
Family
ID=44080266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/303,127 Abandoned US20120298326A1 (en) | 2010-11-25 | 2011-11-22 | Regenerative heat exchanger with a rotor seal with forced guidance |
Country Status (4)
Country | Link |
---|---|
US (1) | US20120298326A1 (en) |
EP (1) | EP2458315B1 (en) |
CN (1) | CN102767981B (en) |
RU (1) | RU2594034C2 (en) |
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RU2716638C1 (en) * | 2019-07-05 | 2020-03-13 | Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" (ФГУП "НАМИ") | Method of preventing deformation of high-temperature rotary disc heat exchanger |
RU202881U1 (en) * | 2020-08-11 | 2021-03-11 | Федеральное государственное унитарное предприятие "Центральный ордена Трудового Красного Знамени научно-исследовательский автомобильный и автомоторный институт "НАМИ" (ФГУП "НАМИ") | Cooling device for the frame of a rotary disk heat exchanger of a power plant |
CN112610978B (en) * | 2020-12-22 | 2023-03-24 | 南京市利澜电力节能科技有限公司 | Novel supporting structure of air preheater gasket |
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US11242333B2 (en) | 2013-08-14 | 2022-02-08 | Kalvista Pharmaceuticals Limited | Inhibitors of plasma kallikrein |
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US11001578B2 (en) | 2014-11-27 | 2021-05-11 | Kalvista Pharmaceuticals Limited | N-((HET)arylmethyl)-heteroaryl-carboxamides compounds as plasma kallikrein inhibitors |
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US11180484B2 (en) | 2016-05-31 | 2021-11-23 | Kalvista Pharmaceuticals Limited | Pyrazole derivatives as plasma kallikrein inhibitors |
US10752607B2 (en) | 2016-06-01 | 2020-08-25 | Kalvista Pharmaceuticals Limited | Polymorphs of N-[(6-cyano-2-fluoro)-3-methoxyphenyl)methyl]-3-(methoxymethyl)-1-({4-[(2-oxopyridin-1-yl)methyl]phenyl}methyl)pyrazole-4-carboxamide as kallikrein inhibitors |
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US11739068B2 (en) | 2016-06-01 | 2023-08-29 | Kalvista Pharmaceuticals Limited | Polymorphs of N-[(3-fluoro-4-methoxypyridin-2-yl)methyl]-3-(methoxymethyl)-1-({4-[(2-oxopyridin-1-yl)methyl]phenyl}methyl)pyrazole-4-carboxamide and salts thereof |
US11234939B2 (en) | 2017-11-29 | 2022-02-01 | Kalvista Pharmaceuticals Limited | Dosage forms comprising a plasma kallikrein inhibitor |
US11584735B2 (en) | 2017-11-29 | 2023-02-21 | Kalvista Pharmaceuticals Limited | Solid forms of a plasma kallikrein inhibitor and salts thereof |
KR102209143B1 (en) * | 2019-07-31 | 2021-01-29 | 주식회사 성현 | Method for manufacturing expansion sleeve seal |
US11613527B2 (en) | 2019-08-09 | 2023-03-28 | Kalvista Pharmaceuticals Limited | Enzyme inhibitors |
Also Published As
Publication number | Publication date |
---|---|
CN102767981A (en) | 2012-11-07 |
RU2011148135A (en) | 2013-05-27 |
EP2458315B1 (en) | 2017-01-04 |
EP2458315A1 (en) | 2012-05-30 |
CN102767981B (en) | 2016-06-29 |
RU2594034C2 (en) | 2016-08-10 |
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