CA1234563A - Lining of non-metallic material - Google Patents
Lining of non-metallic materialInfo
- Publication number
- CA1234563A CA1234563A CA000456759A CA456759A CA1234563A CA 1234563 A CA1234563 A CA 1234563A CA 000456759 A CA000456759 A CA 000456759A CA 456759 A CA456759 A CA 456759A CA 1234563 A CA1234563 A CA 1234563A
- Authority
- CA
- Canada
- Prior art keywords
- plate
- flange
- combination
- heat exchange
- lining
- 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.)
- Expired
Links
Abstract
ABSTRACT OF THE DISCLOSURE
This invention relates to a lining of non-metallic mater-ial for inlet ports and outlet ports of a frame plate and/or a pressure plate of a plate heat exchanger. The lining comprises a cylindrical part and at least one, and preferably two flanges.
In this connection the flange that is to be positioned between a heat exchanger plate and a frame plate and/or a pressure plate is so thin that no machining of the latter is necessary.
This invention relates to a lining of non-metallic mater-ial for inlet ports and outlet ports of a frame plate and/or a pressure plate of a plate heat exchanger. The lining comprises a cylindrical part and at least one, and preferably two flanges.
In this connection the flange that is to be positioned between a heat exchanger plate and a frame plate and/or a pressure plate is so thin that no machining of the latter is necessary.
Description
3~
The present invention relates to a lining of non-metallic material for lining of inlet ports and outlet ports of a frame plate and/or a pressure plate of plate heat e~changers and compris-ing a cylindrical part and at least one, but preferably two, flanges which in the use of the lining are positioned on each side of the frame plate and/or the pressure plate.
A plate heat exchanger comprises a plurality of heat exchanger plates which ar,e fastened between a frame plate and a pressure plate. In the frame plate and/or the pressure plate there are inlet ports and outlet ports for the heat exchange media.
In these inlet ports and ou~let ports linings are often inserted which can be made of different materials. The insertion of such linings ensures that the frame plate and/or the pressure plate will not come into contact with the heat exchanging medium which can be corrosive. Thus, the frame plate and/or the pressure plate can be made of an inexpensive material. The use of conventional linings, however, has involved machining of the'inlet ports and the outlet ports of the frame plate and/or the pressure plate~
because the thickness of the flange of the lining is so large ~0 that without machining in the form of recesses around the inlet ports and the outlet ports of the frame plate and/or the pressure plate the flange would encroach too much upon the structure of the heat exchanger. Moreover, problems would have arisen regarding the contact between a heat exchanger plate and the frame plate and/
or the pressure plate.
British patent No. 1.041.805 discloses a lining that is made of an elastic material and is intended to be inserted into an inlet port or an outlet port of a frame plate or a pressure plate.
The lining comprises a c~lindrical part having a flange in each end. In this connection the flange that is intended to rest against the heat exchanger plate is so thick that machining in the form of a recess around the inlet ports and the outlet ports has had to be , ~3a~ 3 done in the frame plata. Such a machlning is both expensive and time-consuming.
German patent publication No. 23 57 059 also dls-closes a lining made of an elastic material for use ln a plate heat exchanger. In Fig. 3 of the patent publlcation there is shown a schematic sketch of the position of the lining in a frame plate. In this case a relatively thick flange of the lining is outlined between the frame plate and the first heat exchanger plate, the frame plate appearing to be unmachined.
This will, however, probably depend on the fact that the draw-ing is of a schematic nature, because the apparatus according to the drawing would hardly function with such a large dis-tance between the frame plate and the heat exchanger plate.
That the drawing only shows a schematic and not a practical picture of the apparatus is clear from the specification, which states that fox increasing the sealing effect a recess for the flange of the lining should be done in the frame plate. That means that this patent publication discloses an apparatus that is impaired by the same prohlems as that according to the British patent No. 1.041.805.
The present invention removes the disadvantages that are conn0cted with known techniques. Accordlng to the present inventi.on the flange that ls positioned between the frame plate and/or the pressure plate on the one hand and a heat exchanger plate on the other hand is so thin that it does not require recesses around the inlet ports and the outlet ports of the frame plate and/or the pressure plate, and the flange is provided with a bulge, which functions as a seal between the heat exchanger plate on one hand and the frame plate and/or the pressure plate on the other hand.
Thus, according to the present invention there is provided ln a combination with a plate heat exchanger havlng a ~ 2 f ~
plate member which i~ a frame plate or a pressure plate with opposite side surfaces, a connecting tube ~or passage o~ a fluid to or rom the heat exchanger by way of a port in said plate member, and a heat exchange plate ad;acent one of said side sur~aces and having an opening through which said tube and port communicate with the lnterior of the heat exchanger, a lining of non-metallic material for lining said port and comprising a cylindrical portion and thin annular flange extending radially from one end of the cylindrical portion and lntegral therewith, said cylindrical portion covering the wall of said port and forming a passage interconnecting said tube and said opening in the heat exchange plate, sald flange being interposed between the heat exchange plate and said plate mem-ber and resting against an unmachined part of said one sur-face, and an annular bulge lntegral with said flange and engaging said heat exchange plate around its said opening to form a seal between sald plate member and the heat exchange plate. Suitably the heat exchange plate has a gasket groove, said bulge forming a ring gasket fitting into said groove.
Desirably the lining also comprises a second annular flange extending radially from the other end of the cylindrical por-tion and integral therewith, the second flange engaging the other of said side surfaces. Preferably the combination also comprises spacer means associatad with said second flange to limit compression thereof between the connecting tube and said member. More desirably the combination also comprises a bolt connecting said tube with said member, said spacer means including a washer applied to said bolt. Suitably said spacer means include pins fastened in said second flange. Desirably said second flange has a groove ln a peripheral part thereof, said spacer means including a metal rlng located in sald groove. Preferably part o~ said second flange has a graater /~
- 2a -wall thickness at one part thereof than at the part adjacent said one part.
In one embodiment of the present invention the com-bination also comprises an annular metal plate secured to said flange opposita the heat exchange plate and having an opening substantially aligned with said passage in said cylindrical portion. Suitably part of the bulge is in overlying engage-ment with said plate to secure the plate to said flange.
The present invention will be further illustrated by way of the accompanying drawings, ln which:-Fig. 1 is a section through a lining according to a ~0 ,~
- 2b -~3~
preferred embodiment o~ the present invention divided into halves;
and FIGS. 2a-c disclose different connections bet~een the one flange o~ the lining and the ~lange o~ a connecting tube-The lining is made of a non-metallic material and compri-ses a cylindrical part 10 with a flange 11, 12 on each side of the cylindrical part.
The flange 11 which is to rest against a heat exchanger plate is so thin that is can be applied on the outside of the side surface of the frame plate or the pressure plate without encroach-ing materially upon the structure of the heat exchanger. This is of extremely great importance, since due to that the usual machin-ing in the form of a recess in the side surface of the frame plate and/or the pressure plate is eliminated.
The flange 11 has at its periphery a part that is thicker than the remaining part of the flange. This thick part comprises a bulge 13 that extends around the flange 11 and functions as a ring gasket of the closest heat exchanger plate. In this connec~ion the heat exchanger plates are oriented such that the gasket grooves ~0 with the gasket are directed towards the frame plate. Thus, the ring gasket 13 is intended to fit into the pressed gasket groove of the first heat exchanger plate and functions as a seal between the heat exchanger plate and the frame plate. By this arrangement the flange 11 is locked in radial direction at the same time as the lining is centered in the right position in the hole cut out in the frame plate, which hole of tolerance reasons must be made with a certain excess.
The device can be provided with an annular disc 14, pre-ferably a sheet made of steel, that rests against and protects the thin flange 11. In this connection the plate 14 is provided with a circular opening which essentially corresponds to the hole section of the lining 10.
i3 The plate 14 is kept in place by the fact that its outer part projects by a similar amount in under the bulge 13 and as an extra security measure can be glued or vulcanized onto the flange 11 .
The other flange 12 of the lining 10 is to rest against a connecting flange of a connecting tube. In order to prevent the flange 12 beina compressed too much and run the risk of being crushed during the mounting of the connecting tube, at least one distance means can be applied between the connecting tube flange on one hand and the frame plate and/or the pressure plate on the other hand (see Figs. 2a-c).
This distance means may comprise a loose or glued washer 21 on at least some of the pin bolts that connect the connecting tube 22 with the frame plate and/or the pressure plate 23 (Fig.
2a). In this case the diameter of the flange gasket 24 has to be coordinated with the diameter of the washer such that the distance means 21 gives the intended effe~t. Another distance means may comprise a plurality of pins 25 inserted in the flange 24. In this connection the pins are suitably applied at the mounting pro-cedure by gluing or press fit. Alternatively the pins can be vul-canized into the rubber. In the embodiment according to Fig. 1 the distance means comprises pins 15 fastened in the flange 12.
A third dis~ance means comprises a metal ring 26 that is applied in a groove in the peripheral part of the flange 24. The ring that can be made of round iron, square iron or hexagon iron can be open and resilient or closed. The ring is fastened in the groove of the flange in a suitable way, for instance by means of vulcanization. In order to make a reasonable compression of the outer part 16 of the flange 12 possible this part may have a larger wall thickness than the inner part.
The lining is preferably made of an elastic material, for instance rubber, the two flanges of the lining being made in , ~l~3~63 one piece with the remaining part of the lining.
~0 . ~ .
The present invention relates to a lining of non-metallic material for lining of inlet ports and outlet ports of a frame plate and/or a pressure plate of plate heat e~changers and compris-ing a cylindrical part and at least one, but preferably two, flanges which in the use of the lining are positioned on each side of the frame plate and/or the pressure plate.
A plate heat exchanger comprises a plurality of heat exchanger plates which ar,e fastened between a frame plate and a pressure plate. In the frame plate and/or the pressure plate there are inlet ports and outlet ports for the heat exchange media.
In these inlet ports and ou~let ports linings are often inserted which can be made of different materials. The insertion of such linings ensures that the frame plate and/or the pressure plate will not come into contact with the heat exchanging medium which can be corrosive. Thus, the frame plate and/or the pressure plate can be made of an inexpensive material. The use of conventional linings, however, has involved machining of the'inlet ports and the outlet ports of the frame plate and/or the pressure plate~
because the thickness of the flange of the lining is so large ~0 that without machining in the form of recesses around the inlet ports and the outlet ports of the frame plate and/or the pressure plate the flange would encroach too much upon the structure of the heat exchanger. Moreover, problems would have arisen regarding the contact between a heat exchanger plate and the frame plate and/
or the pressure plate.
British patent No. 1.041.805 discloses a lining that is made of an elastic material and is intended to be inserted into an inlet port or an outlet port of a frame plate or a pressure plate.
The lining comprises a c~lindrical part having a flange in each end. In this connection the flange that is intended to rest against the heat exchanger plate is so thick that machining in the form of a recess around the inlet ports and the outlet ports has had to be , ~3a~ 3 done in the frame plata. Such a machlning is both expensive and time-consuming.
German patent publication No. 23 57 059 also dls-closes a lining made of an elastic material for use ln a plate heat exchanger. In Fig. 3 of the patent publlcation there is shown a schematic sketch of the position of the lining in a frame plate. In this case a relatively thick flange of the lining is outlined between the frame plate and the first heat exchanger plate, the frame plate appearing to be unmachined.
This will, however, probably depend on the fact that the draw-ing is of a schematic nature, because the apparatus according to the drawing would hardly function with such a large dis-tance between the frame plate and the heat exchanger plate.
That the drawing only shows a schematic and not a practical picture of the apparatus is clear from the specification, which states that fox increasing the sealing effect a recess for the flange of the lining should be done in the frame plate. That means that this patent publication discloses an apparatus that is impaired by the same prohlems as that according to the British patent No. 1.041.805.
The present invention removes the disadvantages that are conn0cted with known techniques. Accordlng to the present inventi.on the flange that ls positioned between the frame plate and/or the pressure plate on the one hand and a heat exchanger plate on the other hand is so thin that it does not require recesses around the inlet ports and the outlet ports of the frame plate and/or the pressure plate, and the flange is provided with a bulge, which functions as a seal between the heat exchanger plate on one hand and the frame plate and/or the pressure plate on the other hand.
Thus, according to the present invention there is provided ln a combination with a plate heat exchanger havlng a ~ 2 f ~
plate member which i~ a frame plate or a pressure plate with opposite side surfaces, a connecting tube ~or passage o~ a fluid to or rom the heat exchanger by way of a port in said plate member, and a heat exchange plate ad;acent one of said side sur~aces and having an opening through which said tube and port communicate with the lnterior of the heat exchanger, a lining of non-metallic material for lining said port and comprising a cylindrical portion and thin annular flange extending radially from one end of the cylindrical portion and lntegral therewith, said cylindrical portion covering the wall of said port and forming a passage interconnecting said tube and said opening in the heat exchange plate, sald flange being interposed between the heat exchange plate and said plate mem-ber and resting against an unmachined part of said one sur-face, and an annular bulge lntegral with said flange and engaging said heat exchange plate around its said opening to form a seal between sald plate member and the heat exchange plate. Suitably the heat exchange plate has a gasket groove, said bulge forming a ring gasket fitting into said groove.
Desirably the lining also comprises a second annular flange extending radially from the other end of the cylindrical por-tion and integral therewith, the second flange engaging the other of said side surfaces. Preferably the combination also comprises spacer means associatad with said second flange to limit compression thereof between the connecting tube and said member. More desirably the combination also comprises a bolt connecting said tube with said member, said spacer means including a washer applied to said bolt. Suitably said spacer means include pins fastened in said second flange. Desirably said second flange has a groove ln a peripheral part thereof, said spacer means including a metal rlng located in sald groove. Preferably part o~ said second flange has a graater /~
- 2a -wall thickness at one part thereof than at the part adjacent said one part.
In one embodiment of the present invention the com-bination also comprises an annular metal plate secured to said flange opposita the heat exchange plate and having an opening substantially aligned with said passage in said cylindrical portion. Suitably part of the bulge is in overlying engage-ment with said plate to secure the plate to said flange.
The present invention will be further illustrated by way of the accompanying drawings, ln which:-Fig. 1 is a section through a lining according to a ~0 ,~
- 2b -~3~
preferred embodiment o~ the present invention divided into halves;
and FIGS. 2a-c disclose different connections bet~een the one flange o~ the lining and the ~lange o~ a connecting tube-The lining is made of a non-metallic material and compri-ses a cylindrical part 10 with a flange 11, 12 on each side of the cylindrical part.
The flange 11 which is to rest against a heat exchanger plate is so thin that is can be applied on the outside of the side surface of the frame plate or the pressure plate without encroach-ing materially upon the structure of the heat exchanger. This is of extremely great importance, since due to that the usual machin-ing in the form of a recess in the side surface of the frame plate and/or the pressure plate is eliminated.
The flange 11 has at its periphery a part that is thicker than the remaining part of the flange. This thick part comprises a bulge 13 that extends around the flange 11 and functions as a ring gasket of the closest heat exchanger plate. In this connec~ion the heat exchanger plates are oriented such that the gasket grooves ~0 with the gasket are directed towards the frame plate. Thus, the ring gasket 13 is intended to fit into the pressed gasket groove of the first heat exchanger plate and functions as a seal between the heat exchanger plate and the frame plate. By this arrangement the flange 11 is locked in radial direction at the same time as the lining is centered in the right position in the hole cut out in the frame plate, which hole of tolerance reasons must be made with a certain excess.
The device can be provided with an annular disc 14, pre-ferably a sheet made of steel, that rests against and protects the thin flange 11. In this connection the plate 14 is provided with a circular opening which essentially corresponds to the hole section of the lining 10.
i3 The plate 14 is kept in place by the fact that its outer part projects by a similar amount in under the bulge 13 and as an extra security measure can be glued or vulcanized onto the flange 11 .
The other flange 12 of the lining 10 is to rest against a connecting flange of a connecting tube. In order to prevent the flange 12 beina compressed too much and run the risk of being crushed during the mounting of the connecting tube, at least one distance means can be applied between the connecting tube flange on one hand and the frame plate and/or the pressure plate on the other hand (see Figs. 2a-c).
This distance means may comprise a loose or glued washer 21 on at least some of the pin bolts that connect the connecting tube 22 with the frame plate and/or the pressure plate 23 (Fig.
2a). In this case the diameter of the flange gasket 24 has to be coordinated with the diameter of the washer such that the distance means 21 gives the intended effe~t. Another distance means may comprise a plurality of pins 25 inserted in the flange 24. In this connection the pins are suitably applied at the mounting pro-cedure by gluing or press fit. Alternatively the pins can be vul-canized into the rubber. In the embodiment according to Fig. 1 the distance means comprises pins 15 fastened in the flange 12.
A third dis~ance means comprises a metal ring 26 that is applied in a groove in the peripheral part of the flange 24. The ring that can be made of round iron, square iron or hexagon iron can be open and resilient or closed. The ring is fastened in the groove of the flange in a suitable way, for instance by means of vulcanization. In order to make a reasonable compression of the outer part 16 of the flange 12 possible this part may have a larger wall thickness than the inner part.
The lining is preferably made of an elastic material, for instance rubber, the two flanges of the lining being made in , ~l~3~63 one piece with the remaining part of the lining.
~0 . ~ .
Claims (10)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a combination with a plate heat exchanger having a plate member which is a frame plate or a pressure plate with opposite side surfaces, a connecting tube for pas-sage of a fluid to or from the heat exchanger by way of a port in said plate member, and a heat exchange plate adjacent one of said side surfaces and having an opening through which said tube and port communicate with the interior of the heat exchanger, a lining of non-metallic material for lining said port and comprising a cylindrical portion and thin annular flange extending radially from one end of the cylindrical por-tion and integral therewith, said cylindrical portion covering the wall of said port and forming a passage interconnecting said tube and said opening in the heat exchange plate, said flange being interposed between the heat exchange plate and said plate member and resting against an unmachined part of said one surface, and an annular bulge integral with said flange and engaging said heat exchange plate around its said opening to form a seal between said plate member and the heat exchange plate.
2. The combination of claim 1, in which the heat exchange plate has a gasket groove, said bulge forming a ring gasket fitting into said groove.
3. The combination of claim 1, in which the lining comprises also a second annular flange extending radially from the other end of the cylindrical portion and integral there-with, the second flange engaging the other of said side sur-faces.
4. The combination of claim 3, comprising also spacer means associated with said second flange to limit com-pression thereof between the connecting tube and said member.
5. The combination of claim 4, comprising also a bolt connecting said tube with said member, said spacer means including a washer applied to said bolt.
6. The combination of claim 4, in which said spacer means include pins fastened in said second flange.
7. The combination of claim 4, in which said second flange has a groove in a peripheral part thereof, said spacer means including a metal ring located in said groove.
8. The combination of claim 3, in which part of said second flange has a greater wall thickness at one part thereof than at the part adjacent said one part.
9. The combination of claim 1, comprising also an annular metal plate secured to said flange opposite the heat exchange plate and having an opening substantially aligned with said passage in said cylindrical portion.
10. The combination of claim 9, in which part of the bulge is in overlying engagement with said plate to secure the plate to said flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000456759A CA1234563A (en) | 1984-06-18 | 1984-06-18 | Lining of non-metallic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000456759A CA1234563A (en) | 1984-06-18 | 1984-06-18 | Lining of non-metallic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1234563A true CA1234563A (en) | 1988-03-29 |
Family
ID=4128112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000456759A Expired CA1234563A (en) | 1984-06-18 | 1984-06-18 | Lining of non-metallic material |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1234563A (en) |
-
1984
- 1984-06-18 CA CA000456759A patent/CA1234563A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |