US3908757A - Gaskets for plate heat exchangers - Google Patents

Gaskets for plate heat exchangers Download PDF

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Publication number
US3908757A
US3908757A US495573A US49557374A US3908757A US 3908757 A US3908757 A US 3908757A US 495573 A US495573 A US 495573A US 49557374 A US49557374 A US 49557374A US 3908757 A US3908757 A US 3908757A
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US
United States
Prior art keywords
gasket
portions
flow space
space zone
sealing
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 - Lifetime
Application number
US495573A
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English (en)
Inventor
Felix William Wright
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SPX Flow Technology Crawley Ltd
Original Assignee
APV Corp Ltd
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Filing date
Publication date
Application filed by APV Corp Ltd filed Critical APV Corp Ltd
Application granted granted Critical
Publication of US3908757A publication Critical patent/US3908757A/en
Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/10—Arrangements for sealing the margins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/064—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces the packing combining the sealing function with other functions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
    • F16J15/106—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure homogeneous

Definitions

  • the gasket is formed of harder material in the region of such vent gap to prevent the [56] References Cited gasket material extending into the vent gap under heat UNITED STATES PATENTS and Pressure 2,039.216 4/1936 Feldmeier 165/167 9 Claims, 4 Drawing Figures GASKETS FOR PLATE HEAT EXCHANGERS This invention relates to plate heat exchangers.
  • a conventional type of plate heat exchanger comprises a separable pack of heat transfer plates to closely spaced faceto-face relationship to form flow space zones for heat transfer media between adjacent plates.
  • the plates are formed with aligned apertures forming supply and discharge ports for the two heat exchanger media, and peripheral gaskets are provided to limit the flow space zones peripherally of the plates and to control communication between the ports and the flow space zones.
  • any one flow space will thus have communication with the supply and discharge ports for one heat exchange medium, and the apertures which form part of the ports for the other medium will be surrounded by gasket portions.
  • These separate gasket portions may be integral with, or separate from, the peripheral gaskets, as described for instance in United Kingdom Pat. Specification No. 524,909.
  • the peripheral gasket of the flow space will normally serve to isolate the flow space from a zone, hereinafter referred to as a bridge zone, adjacent these ports so that leakage past either gasket into the bridge zone will not lead to mixing of the media unless the other gasket has also failed. It is normal practice to vent the bridge zone to maintain it at atmospheric pressure and to provide a leakage path for liquid which may leak into it. The normal venting is achieved by providing a localised height reduction or gap in the gasket. This has been known for many years, e.g. from United Kingdom Pat. Specification No. 428,634.
  • an increase in the width of the venting gap, or a decrease in the thickness of the metal of the plate means that there is an increased tendency for metal of an adjacent plate, left unsupported by the venting gap, to buckle under the operating pressure in the adjacent flow space and cause leakage from that flow space.
  • the gasket for a heat exchanger plate is formed, in the region of the vent gaps, of a harder material than in the sealing regions whereby extrusion into the vent gaps is prevented.
  • the harder regions may be integral with the main part of the gasket or they may be separate inserts adapted to be'permanently or semi-permanently sealed to the plates.
  • the invention further consists in a heat exchange plate having a gasket according to the invention as set forth above and in a plate heat exchanger comprising a pack of plates having gaskets according to the invention as set forth above.
  • FIG. I is an elevated view of part of a gasket accord
  • FIG. 2 is a section on the lines B-B of FIG. I. showing one plate groove with a gasket and a second one without;
  • FIG. 3 is a section similar to that of FIG. 2, on the line CC of FIG. 1;
  • FIG. 4 is a section on the line AA of FIG. 1, showing portions of 3 consecutive plates with the gaskets.
  • FIG. 1 shows a corner portion of a gasket 3 surrounding a port P and a bridge zone B which has to be vented via a pair of gaps 2.
  • the zones 1 on either side thereof are formed of material harder than the main body of the gasket.
  • FIG. 2 shows a plate 6 with its gasket 3 which normally engages under pressure with a second plate 7.
  • the gasket 3 is shown in the as manufactured form. It is normal for the shape of the gasket and the elastomeric properties of the material of construction to be chosen so that on tightening the plates to an operable condition the gasket shape is altered whereby the sealing face which co-operates with the adjacent plate becomes aligned on a plane X-X to provide a sealing force.
  • Material I adjacent to and across the leakage gap 2, although integral with and part of the seal as manufactured is considerably harder and therefore resistant to distortion which would arise from the application of heat or pressure. Consequently the desired gap 2, FIG. 4, in the gasket is maintained throughout its working life.
  • the material I is desired to resist deformation. and the cross sectional dimensions are preferably reduced just to fill the seal groove as shown in FIG. 3 to provide support for the adjacent seal 4 on either side, FIG. 4, these being required to resist hydraulic pressure.
  • the gasket is subdivided into a main moulding and two port ring mouldings which when assembled abut in the vicinity of the port/bridge. Any or all three could include the harder material in the region of the leakage grooves.
  • a sealing arrangement for a heat exchanger plate having port apertures, a flow space zone and bridge zones between selected port apertures and the flow space zone, the bridge zones being isolated in use by the sealing arrangement from other respective port apertures and the flow space zone and being vented, the sealing arrangement comprising a peripheral gasket portion surrounding the flow space zone, a gasket portion surrounding each port aperture isolated from the flow space zone, and linking gasket portions between the peripheral gasket portion and the port aperture gasket portions, the said linkage portions having vent gaps and being formed, in the region of the said vent gaps,
  • a heat exchanger plate having port apertures. a How space zone and bridge zones between selected port apertures and the flow space zone. the bridge zones being isolated in use by the sealing arrangement from other respective port apertures and the flow space zone being vented. and a sealing arrangement comprising a peripheral gasket portion surrounding the flow space zone, a gasket portion surrounding each port aperture isolated from the flow space zone. and linking gasket portions between the peripheral gasket portion and the port aperture gasket portions, the linkage portions having vent gaps and being formed, in the region of the said vent gaps. of a material harder than the material used for the sealing gasket portions whereby extrusion into the vent gaps is prevented.
  • a plate heat exchanger comprising a pack of plates in spaced facc-to-face arrangement. each plate having port apertures. a flow space zone and bridge zones between selected port apertures and the flow space zone. the bridge zones being isolated in use by the sealing ar rangement from other respective port apertures and the flow space zone and being vented. and a sealing arrangement comprising a peripheral gasket portion surrounding the ilow space zone. a gasket portion surrounding each port aperture isolated from the flow space zone. and linking gasket portions between the peripheral gasket portion and the port aperture gasket portions. the said leakage portions having vent gaps and being formed. in the region of the said vent gaps, of a material used for the sealing gasket portions whereby extrusion into the vent gaps is prevented.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US495573A 1973-08-16 1974-08-08 Gaskets for plate heat exchangers Expired - Lifetime US3908757A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3878673A GB1445624A (en) 1973-08-16 1973-08-16 Gaskets for plate heat exchangers

Publications (1)

Publication Number Publication Date
US3908757A true US3908757A (en) 1975-09-30

Family

ID=10405685

Family Applications (1)

Application Number Title Priority Date Filing Date
US495573A Expired - Lifetime US3908757A (en) 1973-08-16 1974-08-08 Gaskets for plate heat exchangers

Country Status (7)

Country Link
US (1) US3908757A (xx)
JP (1) JPS5222702B2 (xx)
DE (1) DE2438281A1 (xx)
FR (1) FR2241054B1 (xx)
GB (1) GB1445624A (xx)
NL (1) NL7410928A (xx)
SE (1) SE414340B (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372375A (en) * 1979-08-08 1983-02-08 The A.P.V. Company Limited Heat exchanger
US4903758A (en) * 1987-08-07 1990-02-27 Baker Perkins Plc Plate heat transfer apparatus with leakage detector
US5417943A (en) * 1992-09-22 1995-05-23 Siemens Aktiengesellschaft Method for producing UO2 or (U/PU)02 powder

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2141814B (en) * 1983-06-20 1986-10-01 Apv Int Ltd Improvements in plate heat exchangers
JP2532548Y2 (ja) * 1990-03-20 1997-04-16 株式会社日阪製作所 プレート式熱交換器のガスケット
JPH0646190U (ja) * 1992-11-24 1994-06-24 株式会社ガスター プレート式熱交換器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2039216A (en) * 1935-08-16 1936-04-28 Cherry Burrell Corp Plate heat exchanger
US2217567A (en) * 1936-04-22 1940-10-08 Aluminium Plant And Vessel Com Plate-type heat exchanger
US2939686A (en) * 1955-02-04 1960-06-07 Cherry Burrell Corp Double port heat exchanger plate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2039216A (en) * 1935-08-16 1936-04-28 Cherry Burrell Corp Plate heat exchanger
US2217567A (en) * 1936-04-22 1940-10-08 Aluminium Plant And Vessel Com Plate-type heat exchanger
US2939686A (en) * 1955-02-04 1960-06-07 Cherry Burrell Corp Double port heat exchanger plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372375A (en) * 1979-08-08 1983-02-08 The A.P.V. Company Limited Heat exchanger
US4903758A (en) * 1987-08-07 1990-02-27 Baker Perkins Plc Plate heat transfer apparatus with leakage detector
US5417943A (en) * 1992-09-22 1995-05-23 Siemens Aktiengesellschaft Method for producing UO2 or (U/PU)02 powder

Also Published As

Publication number Publication date
JPS5049756A (xx) 1975-05-02
FR2241054A1 (xx) 1975-03-14
GB1445624A (en) 1976-08-11
DE2438281A1 (de) 1975-03-06
FR2241054B1 (xx) 1978-12-29
NL7410928A (nl) 1975-02-18
SE7410409L (xx) 1975-02-17
JPS5222702B2 (xx) 1977-06-18
SE414340B (sv) 1980-07-21

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