US3522840A - A heat exchange and pressure relief device therefor - Google Patents
A heat exchange and pressure relief device therefor Download PDFInfo
- Publication number
- US3522840A US3522840A US781153A US3522840DA US3522840A US 3522840 A US3522840 A US 3522840A US 781153 A US781153 A US 781153A US 3522840D A US3522840D A US 3522840DA US 3522840 A US3522840 A US 3522840A
- Authority
- US
- United States
- Prior art keywords
- case
- cover
- bolt
- shear
- housing
- 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
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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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
- F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/12—Safety or protection arrangements; Arrangements for preventing malfunction for preventing overpressure
-
- 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
- Y10S165/355—Heat exchange having separate flow passage for two distinct fluids
- Y10S165/40—Shell enclosed conduit assembly
- Y10S165/401—Shell enclosed conduit assembly including tube support or shell-side flow director
- Y10S165/405—Extending in a longitudinal direction
- Y10S165/407—Extending in a longitudinal direction internal casing or tube sleeve
Definitions
- Mc Curry ABSTRACT A pressure relief device for a heat exchanger wherein the housing consists of a cover, and a case adapted to seat against the cover; coils for conducting hot fluid through the housing for cooling the fluid; a cooling fluid in said housing surrounding the coils; and attaching means including shear DEVICE E R means operable to shear upon occurrence of excessive pres- 7Claims6Drawmg sure in said housing, allowing the case to separate from the US. Cl. 165/74, Cover to release the pressure in said housing; stop means limit- 165/163 ing the travel of said case under influence of said pressure, and Int.Cl. F28d1/06 decelerating means decelerating the movement of the case Field ofSearch 165/11,?6, prior to its reaching the travel limit permitted by the stop 74,134, 163,175,160 means.
- shear DEVICE E R means operable to shear upon occurrence of excessive pres- 7Claims6Drawmg sure in said housing, allowing the case to separate from the
- a HEAT EXCHANGE AND PRESSURE RELIEF DEVICE THEREFOR CROSS-REFERENCE TO RELATED APPLICATION The invention is an improvement in a heat exchanger and is illustrated as an improvement of the subject matter of United States Patent Application Serial No. 749,120, filed July 31, 1968, by Robert S. Wentworth, Jr. and entitled Heat Exchanger.
- This invention has to do with releasing excessive pressure in the housing of a heat exchanger, and controlling the movement of the parts thereof to prevent them becoming projectiles endangering persons and objects in the line of travel.
- a housing comprising a case and cover wherein the case is attached to the cover by an elongated bolt having a head spaced outwardly from the case and cover which acts as a stop means for the outer limit of travel of the case, and wherein shear means holds the case in position, but which shear means will release under excessive pressure, and further having a decelerating means to slow down or decelerate the travel ofthe case.
- the housing contains coils with liquid under high pressure and high temperatures, and the coils are overlapped with a spacer sheet between each layer, and wherein the housing is provided with a blind bore having a bolt therethrough attaching the case to the cover, with the bolt having a head serving as a limit stop in the event the case is propelled outwardly, and also having a ring thereon with a shear pin through the bolt and resting against the ring to form a holding means holding the case to the cover, and further providing for a sleeve of distortable material forming a decelerating means located between the bolt head and the ring and adapted to slow down and stop the case in the event the pressures cause the shear pin to shear and the case to be propelled outwardly.
- FIG. 1 is a longitudinal sectional view illustrating the present invention the view being taken on the line l-1 of FIG. 2 looking in the direction of the arrows, the view also having a mounting bracket shown in broken lines;
- FIG. 2 is an end elevational view illustrating the cover or base of the heat exchanger shown in FIG. 1 as incorporating the present invention
- FIG. 3 is a fragmentary sectional view taken on the line 3--3 of FIG. 2, looking in the direction of the arrows;
- FIG. 4 is a fragmentary rear end view, partly in cross-section and showing the arrangement of the shear means, the view being taken on the line 4--4 of FIG. 1 looking in the direction ofthe arrows;
- FIG. 5 is a fragmentary sectional view taken on the line 5-5 of FIG. l looking in the direction ofthc arrows;
- FIG. 6 is a longitudinal sectional view showing the device of FIG. l in its condition subsequent to the operation shearing the shear means and travel of the case to its outer limit to relieve excessive pressure within the housing.
- a housing 21 which comprises a case 22 and a cover 23.
- the case in the arrangement shown, has an annulus 24 formed by an outer cylindrical wall 25 and a radially inwardly spaced inner cylindrical wall 26 concentric with the wall 25.
- the bore formed by the inner cylindrical wall 26 is joined at its other end; that is, its inner end, with a closure wall or web usually herein referred to as the web 28, and forming with the inner cylindrical wall 26 a blind bore or recess 29 open at its outer end,
- the web ZR- preferably is drilled or otherwise provided with a hole or opening 31 to accommodate a bolt or other fastening means, herein shown as an elongated bolt 32, whereby the case 22 may be attached to the cover 23.
- the cover 23 is also provided with an opening or hole 33 which, when the case is seated on the cover, is in alignment with the hole 3i in the web 28.
- the bolt 32 is-threaded on the end which extends through the cover 23, and the bolt 32 as above mentioned is preferably elongated as shown in the drawings, and provided with a nut 34 on its threaded end and a head 35 on its outer end, The head 35 serves as a stop limit to limit the outward travel of the case 22, as hereinafter described.
- the bolt extends outwardly a preselected distance from the web, preferably having the head 35 located at or near the outer end of the case. The reasons for this will be apparent from further description.
- a grooved ring 36 is carried by the bolt 32 and is adapted to seat against the web 29 as shown in FIGS. l and 3.
- the bolt 32 is drilled to receive a shear pin 37, which shear pin seats within the groove, here numbered groove 38 (see FIG. 6).
- the groove 38 is preferably of approximately the same diameter as the shear pin 37 so that the groove will support the shear pin over one half of its circumference. This allows the use of a smaller size shear pin than would be necessary in the event the groove were not provided, and correspondingly the hole through the bolt 32 may be smaller, thus not unduly weakening the bolt.
- a tube 39 of deformable material preferably copper or other suitable metal, which is provided with indentations 41 which serve both the purpose of retaining the tube, 39 by friction or pressure on the bolt adjacent the head 35, and also conditions the tube 39 for the proper crushing or deforming action when the case and ring travel up the bolt and strike the end of the tube 39.
- a coil' of tubing 42 which, in the arrangement shown, enters the housing 21 through a hole 43 in the cover 23, extends outwardly in a spiral winding and inwardly on a reverse spiral diametrically inward of the outer spiral, and leaves the housing 21 through the hole 44 in the cover 23.
- liquid to be cooled is carried by the coil. This liquid may be under several hundred degrees of temperature; for example, 400F., and under high pressure, possibly 2500 or 3000 p.s.i.g. b
- a coolant liquid enters the housing through the port 45, flows around the coils 42 and exhausts through the outlet port 46.
- This coolant which is frequently water, may be under pressure such as exists inthe water mains servicing the area where the device is used possiblyunder pressure of up to 150 p.s.i.g., against which the shear means must hold without shearing.
- the ports 45 and 46 are tapped, and (while not shown) port 45 is adapted to be connected to a source of coolant, and port 46 to a drain or other means for disposing of such coolant.
- the coils 42 are separated by a spacer sleeve 47 which, when the housing is assembled, seats against the cover 23 at its innner end and is partly cut away at its outer end to allow the coils 42 to pass around the outer end and further to allow the cooling fluid to flow from the area surrounding the inner portion of the coils to the area surrounding the outer portion of the coils.
- the cover 23 is usually provided with a mounting bra'cket 48 on-the cover 23, which mounting bracket 48 is shown in FIG. I in dotted lines, by means of which the housing assembly may be attached to a suitable support.
- case 22 is provided with O-rings 49 and 5
- the case 22 as shown here, has a vent hole 52 in which is inlayer of coils, and the coils connected to a source of fluid to be cooled.
- the case 22 is then inserted over the coils, with the web 28 and seals 49 and 51 against the outer face of the cover
- the bolt 32 with the decelerating means here shown as tube 39, mounted thereon adjacent .the head 35 and with the shear pin 37 extending through the bolt and resting in the groove 38 of the ring 36, is then inserted in the blind bore with the threaded end of the bolt extending through the cover 23 and with the ring 36 resting against the outer face of the web 28.
- the nut 34 is then tightened to draw the case 22 firmly against the-cover 23, but not sufficiently to shear the shear pin 37.
- a decelerating means is necessary or at least desirable to slow down the case 22 and ring 36 and prevent them fromslamming into the head 35 of the bolt 32 with excessive force.
- a means has been provided in the tube 39 .of copper or other similar material which will collapse and distort and serve as a decelerating means slowing down and generally stopping the ring and the case before they reach the limit means; that is, the head 35 of the bolt.
- the ring 36 could possibly be dispensed with, but since the groove 38 is desirable, provision would have to be made therefor in the face of the web 28, and the arrangement would not be as easy to assemble or as satisfactory. Further, the ring 36 does tend to distribute thepressure around the entire face of the web beneath the ring, whereas elimination ofthe ring would tend to place the forces on only a very small part of the web.
- a heat exchanger or the like having a housing comprising a cover and a case adapted to seat on said cover, means comprising coils for conducting hot fluid to be cooled through said housing, a cooling fluid in said housing surrounding said coils, and means attaching provements wherein:
- said attaching means includes a shear means operable to shear upon the occurrence of pressure exceeding a predetermined maximum in said housing, to release said case allowing it to separate from said cover; b) stop means limiting the travel of said case upon its separating from said cover; and c) a decelerating means decelerating the speed of move ment of said case after it separates from said cover and before it reaches the travel limit imposed by said stop means.
- shear means comprises a ring on said attaching means and a shear pin carried by said attaching means and resting against said ring.
- said decelerating means comprises a tube on said attaching means located between said stop means and said shear means, and constructed of deformable material adapted to deform under the force created by movement of said case after it separates from said cover.
- said decelerating means comprises a tube on said attaching means located between said stop means and said shear means, and constructed of deformable material adapted to deform under the force created by movement of said case after it separates from said cover.
- the stop means limiting the travel of said case upon separation from said cover comprises the head of a bolt forming a part of said attaching means, spaced longitudinally of said attaching means from said case whereby said case moves longitudinally of the bolt after it separates from said cover and before it reaches said stop means.
- the decelerating means comprises a tube of deformable material having means frictionally engaging said bolt and holding said deformable'tube positioned thereon adjacent said bolt head.
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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)
Description
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US78115368A | 1968-12-04 | 1968-12-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3522840A true US3522840A (en) | 1970-08-04 |
Family
ID=25121859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US781153A Expired - Lifetime US3522840A (en) | 1968-12-04 | 1968-12-04 | A heat exchange and pressure relief device therefor |
Country Status (1)
Country | Link |
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US (1) | US3522840A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52103751A (en) * | 1976-02-27 | 1977-08-31 | Fujikoshi Kk | Oil cooler |
FR2467372A1 (en) * | 1979-10-11 | 1981-04-17 | Spiral Tubing Corp | Multiple pipe coil heat exchanger - has coaxial inner and outer coils joined by curved section |
US4369163A (en) * | 1980-09-02 | 1983-01-18 | Brennstoffinstitut Freiberg DDR | Thermal shielding for bottoms and covers of reaction vessels |
US5682947A (en) * | 1994-11-15 | 1997-11-04 | Graham Corporation | Housing assembly for a coil heat exchanger |
WO1999034162A1 (en) * | 1997-12-31 | 1999-07-08 | Flowserve Management Company | Helical coil heat exchanger with removable end plates |
US20090013677A1 (en) * | 2007-07-11 | 2009-01-15 | Andreas Capelle | Exhaust gas heat exchanger with integrated mounting interface |
EP2448660A1 (en) * | 2009-06-29 | 2012-05-09 | UTC Power Corporation | Spiral heat exchanger for hydrodesulfurizer feedstock |
EP3305388A1 (en) * | 2016-10-06 | 2018-04-11 | Linde Aktiengesellschaft | Water evaporator and technical system |
-
1968
- 1968-12-04 US US781153A patent/US3522840A/en not_active Expired - Lifetime
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52103751A (en) * | 1976-02-27 | 1977-08-31 | Fujikoshi Kk | Oil cooler |
JPS5339060B2 (en) * | 1976-02-27 | 1978-10-19 | ||
FR2467372A1 (en) * | 1979-10-11 | 1981-04-17 | Spiral Tubing Corp | Multiple pipe coil heat exchanger - has coaxial inner and outer coils joined by curved section |
US4369163A (en) * | 1980-09-02 | 1983-01-18 | Brennstoffinstitut Freiberg DDR | Thermal shielding for bottoms and covers of reaction vessels |
US5682947A (en) * | 1994-11-15 | 1997-11-04 | Graham Corporation | Housing assembly for a coil heat exchanger |
US6076597A (en) * | 1997-12-31 | 2000-06-20 | Flowserve Management Company | Helical coil heat exchanger with removable end plates |
WO1999034162A1 (en) * | 1997-12-31 | 1999-07-08 | Flowserve Management Company | Helical coil heat exchanger with removable end plates |
US6102106A (en) * | 1997-12-31 | 2000-08-15 | Flowserve Management Company | Method of servicing a helical coil heat exchanger with removable end plates |
US20090013677A1 (en) * | 2007-07-11 | 2009-01-15 | Andreas Capelle | Exhaust gas heat exchanger with integrated mounting interface |
US8776872B2 (en) * | 2007-07-11 | 2014-07-15 | Halla Visteon Climate Control Corporation | Exhaust gas heat exchanger with integrated mounting interface |
EP2448660A1 (en) * | 2009-06-29 | 2012-05-09 | UTC Power Corporation | Spiral heat exchanger for hydrodesulfurizer feedstock |
EP2448660A4 (en) * | 2009-06-29 | 2014-09-03 | Clearedge Power Corp | Spiral heat exchanger for hydrodesulfurizer feedstock |
EP3305388A1 (en) * | 2016-10-06 | 2018-04-11 | Linde Aktiengesellschaft | Water evaporator and technical system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CITIBANK, N.A., NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:BORG-WARNER INDUSTRIAL PRODUCTS, INC.,;REEL/FRAME:004745/0480 Effective date: 19870520 Owner name: BORG-WARNER INDUSTRIAL PRODUCTS, INC., CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BORG-WARNER CORPORATION;REEL/FRAME:004745/0469 Effective date: 19870514 Owner name: CITIBANK, N.A., 641 LEXINGTON AVE., NEW YORK, NY 1 Free format text: SECURITY INTEREST;ASSIGNOR:BORG-WARNER INDUSTRIAL PRODUCTS, INC.,;REEL/FRAME:004745/0480 Effective date: 19870520 Owner name: BORG-WARNER INDUSTRIAL PRODUCTS, INC., 200 OCEANGA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BORG-WARNER CORPORATION;REEL/FRAME:004745/0469 Effective date: 19870514 |
|
AS | Assignment |
Owner name: CITIBANK, N.A., NEW YORK Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:BW/IP INTERNATIONAL INC. (FORMERLY KNOWN AS BORG-WARNER INDUSTRIAL PRODUCTS, INC.);REEL/FRAME:006376/0881 Effective date: 19910831 |