EP0581941A1 - Multi-disc heat exchanger - Google Patents
Multi-disc heat exchangerInfo
- Publication number
- EP0581941A1 EP0581941A1 EP19930904262 EP93904262A EP0581941A1 EP 0581941 A1 EP0581941 A1 EP 0581941A1 EP 19930904262 EP19930904262 EP 19930904262 EP 93904262 A EP93904262 A EP 93904262A EP 0581941 A1 EP0581941 A1 EP 0581941A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- disc
- plates
- pair
- corrugations
- plate
- 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.)
- Withdrawn
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
- F28D11/00—Heat-exchange apparatus employing moving conduits
- F28D11/02—Heat-exchange apparatus employing moving conduits the movement being rotary, e.g. performed by a drum or roller
Definitions
- the present invention relates to a heat exchanger, to discs for use therein, and to a method of making such discs.
- each disc is hollow and communicates with a passage in the rotor for a heat exchange medium, such as steam, to pass to and from each disc.
- the discs are generally formed from a pair of annular stainless steel discs welded together at their outer edge and fixed to the rotor at their inner edge to be spaced one from another whereby the cross section of each disc is essentially a double cone.
- the plates are held together by at least two rings of stay bolts, perhaps even four, each ring generally having 36 bolts welded between the plates.
- a hollow disc for use in a heat exchanger comprising a pair of plates connected at their outer periphery and spaced apart adjacent their centres, each plate being corrugated annularly with at least one corrugation.
- the two plates are preferably held together by means of a single ring of stay bolts affixed to and between the plates.
- the corrugations may project externally of the disc. Alternatively they may project internally into the disc. In this latter case, the, one or both corrugations may have the internal surfaces of respective plates joined e.g. by welding at these points.
- a method of manufacturing a heat exchange disc comprising the steps of providing a pair of generally frustoconical rollers, one roller of said pair having at least one portion of increased diameter and the other of said pair having a corresponding portion of decreased diameter; providing a generally dish shaped annular disc of material; arranging said rollers so that their contact faces extend along a line generally at the same angle to horizontal as that between the base and the edge of the dished plate; and rotating at least one of said pair of rollers, whereby the disc is deformed to have at least one corrugation.
- a stay bolt for a hollow heat exchange disc comprising a stem having shoulder means adapted to contact respective interior surfaces of the disc around stay bolt holes in the plates forming the disc, to form a backing during subsequent welding.
- each stay bolt is preferably angled, one with respect to the other, at an angle which corresponds substantially to the angle between the plates of the disc .
- a heat exchanger comprising a plurality of hollow discs of substantially double conical cross-section into which a pressurised heat exchange medium may be fed and which may> be rotated in contact with a material to be treated, each of said discs comprising a pair of substantially annular plates each having at least one corrugation extending substantially concentrically about the plate, and a plurality of stay bolts arranged along a concentric circle at a median radius to connect the plates together.
- any or all of the above aspects may be used in combination.
- FIGURE 1 is an elevation of a disc embodying the invention
- FIGURE 2 is a part cross sectional view of the disc of Figure 1;
- FIGURE 3 is a side elevation of a stay bolt embodying the invention.
- FIGURE 4 is a . side elevation of a roller for use in the method of the invention.
- Figures 1 and 2 show a heat exchange disc. It is constructed from two annular discs 1 of stainless steel, approximately 8mm thick. These are joined together around their periphery by a fillet weld 2. At their interior periphery, i.e. around the central aperture 3, each plate is welded to a stainless steel tube 4, acting as a rotor axis, spaced one from another. In a heat exchanger, a plurality of such hollow discs are connected to the rotor axis along its length. Steam, possibly at a pressure of 6-7 bar is fed into one end of the rotor axis and thence through connecting holes into each disc. The assembly is rotated within a container for the material to be treated. The steam condenses within the discs and the water is directed back into the rotor axis.
- each plate 1 is corrugated annularly to improve its stiffness.
- the design of stay bolt has been improved. This enables discs to be used which have only thirty-two stay bolts.
- Each plate 1 is formed with two annular corrugations 5. In the embodiment shown, these extend externally of the general plane of the plate, but it is possible to make them internal. These increase the stiffness of the plates to such an extent that only one circle of thirty-two stay bolts 6 are required. They are located between the two corrugations and their design is shown more clearly in Figure 3.
- Each bolt 6 comprises a stem 7 and two shouldered heads 8.
- the heads 8 are angled one with respect to the other to correspond with the angle of the plates 1 of the disc 2. It is thus important that they are oriented correctly.
- Each head 8 comprises a shoulder 9 intended to contact an interior face of the plate 1.
- An angled head 10 is intended to fit within a hole in the plate. The weld material, when applied from the outside of the disc will fill the triangular cross section space and the shoulder 9 acts as a backing, helping to prevent coking. The joint thus formed is far less prone to failure than existing stay bolt welds.
- annular dished plate is rolled between a pair of shaped rollers.
- One of them, 11, is shown in Figure 4. The other corresponds in a reverse manner.
- Each roller has a generally frustoconical shape with sides angled to correspond to the angle the plate will assume when connected into a disc.
- the roller shown has two annular protruberances 12, which act to form the corrugations 5 when the plate is rolled between the roller 11 and the complementary roller (i.e. having corresponding annular grooves).
Landscapes
- 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)
Abstract
Un disque creux, destiné à être utilisé dans un échangeur de chaleur, comprend une paire de plaques (1) accouplées au niveau de leur pourtour externe (2) et espacées à proximité de leur centre (3). Chaque plaque (1) comprend au moins une ondulation annulaire (5). Les deux plaques sont maintenues ensemble en un point intermédiaire par des boulons d'ancrage (6) disposés en un anneau unique et fixés aux plaques de manière intermédiaire par rapport à ces dernières.A hollow disc, intended for use in a heat exchanger, comprises a pair of plates (1) coupled at their external periphery (2) and spaced close to their center (3). Each plate (1) comprises at least one annular corrugation (5). The two plates are held together at an intermediate point by anchor bolts (6) arranged in a single ring and fixed to the plates intermediate with respect to the latter.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9204093 | 1992-02-26 | ||
GB929204093A GB9204093D0 (en) | 1992-02-26 | 1992-02-26 | Multi-disc heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0581941A1 true EP0581941A1 (en) | 1994-02-09 |
Family
ID=10711079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19930904262 Withdrawn EP0581941A1 (en) | 1992-02-26 | 1993-02-26 | Multi-disc heat exchanger |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0581941A1 (en) |
GB (1) | GB9204093D0 (en) |
WO (1) | WO1993017291A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK174551B1 (en) * | 2000-12-12 | 2003-05-26 | Atlas Stord Denmark As | Annular drying element, method and use for its manufacture and dryer |
NO315061B1 (en) * | 2001-07-26 | 2003-06-30 | Stord Bartz As | Device at the plate in disc dry |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3777810A (en) * | 1972-08-24 | 1973-12-11 | Strong Mfg Co Scott | Dryer |
DK138406A (en) * | 1973-05-01 | |||
IT1163729B (en) * | 1979-10-15 | 1987-04-08 | Pozzi L Mecc | ROTARY DRUM HEAT EXCHANGER |
BR8708001A (en) | 1987-12-28 | 1990-10-16 | Henrik Ullum | APPLIANCE FOR THE HEATING AND / OR DRYING OF HUMID COMINUATED MATERIAL |
DE3838640A1 (en) * | 1988-11-15 | 1990-06-13 | Wulff Maschf Appbau Gmbh | Disc agitator in a continuously operating drier |
-
1992
- 1992-02-26 GB GB929204093A patent/GB9204093D0/en active Pending
-
1993
- 1993-02-26 EP EP19930904262 patent/EP0581941A1/en not_active Withdrawn
- 1993-02-26 WO PCT/GB1993/000398 patent/WO1993017291A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9317291A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1993017291A1 (en) | 1993-09-02 |
GB9204093D0 (en) | 1992-04-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100455008B1 (en) | Assembly for connection of rotary valve and actuator | |
US6715243B1 (en) | Method for production of a silo | |
US2565296A (en) | Welded expansible bellows | |
US4484771A (en) | Flange for connecting pipes | |
EP0399038A1 (en) | Multiple walled chimney. | |
JPS5810635B2 (en) | Rotary fitting for multiple conduits | |
HU183295B (en) | Holding and centering device for automatic butt welding spigots | |
US2517391A (en) | Joint coupling | |
US20050126870A1 (en) | Assembly comprised of a brake disk with a hub | |
KR20110139180A (en) | Cooling plate | |
EP0581941A1 (en) | Multi-disc heat exchanger | |
JP6813589B2 (en) | Support structure used for wind power plants | |
US3601450A (en) | Vehicle wheel | |
JPS5922834B2 (en) | Screen drum and its manufacturing method | |
US4105227A (en) | Flange joint between pipe lengths | |
CN201147871Y (en) | Reusable spoke plate supporting structure for surface overlaying of thin-wall large-diameter roller | |
US5890814A (en) | Support ring mount for rotating drum | |
US2223691A (en) | Bellows | |
US2181196A (en) | Composite flange structure | |
JPH09158176A (en) | Connection metallic material of pile | |
JP2001349340A (en) | Annular disc for flexible shaft coupling, disc packet manufactured from annular disc, and flexible shaft coupling having such annular disc | |
JPH0336626B2 (en) | ||
US20080305937A1 (en) | Roller body with profile channels for a thermal treatment fluid | |
CN212857411U (en) | Bearing type inner and outer die combined type circle holding device | |
JP2015036478A (en) | Aseismatic reinforcement structure of steel pipe structure and aseismatic reinforcement method thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19931026 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE |
|
17Q | First examination report despatched |
Effective date: 19940623 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19970218 |