US3721291A - End closure for a heat exchanger - Google Patents

End closure for a heat exchanger Download PDF

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Publication number
US3721291A
US3721291A US00172853A US3721291DA US3721291A US 3721291 A US3721291 A US 3721291A US 00172853 A US00172853 A US 00172853A US 3721291D A US3721291D A US 3721291DA US 3721291 A US3721291 A US 3721291A
Authority
US
United States
Prior art keywords
shell
heat exchanger
head
tube heat
set forth
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
US00172853A
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English (en)
Inventor
A Massaro
G Bieberbach
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of US3721291A publication Critical patent/US3721291A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/02—Removable elements
    • 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
    • Y10S165/427—Manifold for tube-side fluid, i.e. parallel

Definitions

  • a shell and tube heat exchanger havmg a tube bundle, PP N05 172,853 which is removable through the shell, and having a removable channel head, which forms an end closure 52 us. 01 ..165/l58 122/32 and a header the tubes, the channel head having 51 1m. (:1.
  • F 28f 9/06 an annular step which registers with an inwardly of Search dil'eCted flange 0n the shell to form a seal utilizing an /1373.
  • This invention relates to shell and tube heat exchangers and more particularly to a sealing arrangement for a channel head which forms an end closure for the shell.
  • the shell has an annular flange extending radially inwardly from one end thereof.
  • the head portion has an annular step, which DESCRIPTION OF THE PREFERRED EMBODIMENT flange 9 is welded to the shell 7.
  • the outer diameter of the 'flange is generally equal to the outer diameter of the shell, while the inner diameter of the flange is conregisters with the flange, the step has an annular tread and riser portion so disposed that the tread portion is generally parallel to a mating surface on the flange.
  • the mating surfaces are adapted to receive a ring-shaped sealing member and the heat exchanger has a plurality of arcuate segments in clamping engagement with the head portion and the flange and are adapted to apply a sealing force generally normal to the mating surfaces.
  • FIG. 1 is a plan view of a portion of a shell and tube heat exchanger having a removable headportion made in accordance with this invention
  • FIG. 2 is a partial vertical sectional view taken on I line II-II of FIG. 1.
  • the flange 9 is disposed to have two parallel surfaces 13 and 15 disposed normal to the shell 7.
  • the channel head 3 has a sperical dome portion 17 and a circular tube sheet 19.
  • a nozzle 21 extends axially upward from the sperical dome potion 17.
  • the nozzle 21, dome portion 17, and tube sheet 19 are welded together by circumferential welds 23 and 25 to form a unitized channel head 3.
  • a plurality of tubes 27 depend from the tube sheet 19 and are fastened and sealed thereto by rolling, welding or other means.
  • the upper portion of the sperical dome portion 17 has an outer annular step 29, which'registers with the flange 9.
  • the step 29 has an annular tread portion 31 and a riser portion 33 so disposed that the tread portion 31 is generally parallel with the surface 13 on the flange to provide mating surfaces.
  • These mating surfaces 13 and 31 are adapted to receive a ring-shaped sealing member or gasket 35.
  • the gasket 35 is an elastomer O-ring, however, a metal ring or'a flat or spirally wound gasket may be utilized.
  • the mating surfaces may have one or more grooves, the shape of which varies according to the accepted and well known techniques utilized to seal annular mating surfaces.
  • the riser portion 33 of the step 29 is generally as high as the flange 9 is thick, providing a generally planar annular surface comprising the upper surface 15 of the flange 9 and an annular surface 37 on the upper portion of the sperical dome 17.
  • a plurality of arcuate segments 39 are disposed in clamping engagement with the surfaces 15 and 37.
  • Cap screws or bolts 41 fasten the arcuate segmented clamps 39 to the dome portion 17 of the channel head 3.
  • the clamps 39 are generally channel shaped with a heavy web 43 and legs 45 and 47. The legs 45 and 47 engage the flange 9 and dome portion 17, respectively, so that by tightening the bolts 41 a sealing force generally normal to the mating surfaces 31 and 13 is applied.
  • the number and size of the bolts 41 can be advantageously predetermined to apply the proper sealing force on the gasket 35 and take into account the weight of the tubes 27, which are supported from the channel head 3.
  • the clamps 39 also bridge a gap 47 between the riser 33 and inside diameter of the flange and provide clearance for a circumferential seal weld 49, which provides a positive seal between the flange 9 and the dome portion 17, if needed.
  • the tube sheet 19 has a peripheral cylindrical surface 51, which aligns with an outer peripheral surface 53 of the sperical dome 17 providing the channel head with an outer cylindrical surface slightly smaller in diameter than the inner diameter of the shell 7 so that tube sheet 19.
  • the arrangement as hereinbefore described allows shell pressure acting on the bottom of the tube sheet 19 to assist in sealing the gasket 35, this is particularly advantageous to prevent leaks at theseals resulting from pressure surges coincident with a reaction between sodium and water prior to some relief device (not shown) relieving the pressure build up in the shell.
  • a shell and tube heat exchanger having a head portion connected to a plurality of tubes, to serve as an enclosure for one end of said shell and to be removable through said shell, said shell having an'annular flange extending radiallyinwardly from said one .end thereof, said head portion having an annular step, which registers with said flange, said step having an annular tread and riser portion so disposed that the tread portion is generally parallel to a mating surface on said flange, said-mating surfaces having a ring shaped seal member associated therewith and said heat exchanger having a plurality of arcuate segments in clamping engagements with said'head portion 'and said flange, and
  • a shell and-tube heat exchanger as set forth in claim 1 having an annular seal weld disposed to form a positive seal between the flange and the head portion thereof.
  • the arcuate segments are bolted to the head in such a manner that the force normal to the mating surface has a predetermined value sufficient to properly seat the seal ring member.

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)
US00172853A 1971-08-18 1971-08-18 End closure for a heat exchanger Expired - Lifetime US3721291A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17285371A 1971-08-18 1971-08-18

Publications (1)

Publication Number Publication Date
US3721291A true US3721291A (en) 1973-03-20

Family

ID=22629503

Family Applications (1)

Application Number Title Priority Date Filing Date
US00172853A Expired - Lifetime US3721291A (en) 1971-08-18 1971-08-18 End closure for a heat exchanger

Country Status (3)

Country Link
US (1) US3721291A (enrdf_load_stackoverflow)
JP (1) JPS514707B2 (enrdf_load_stackoverflow)
IT (1) IT963980B (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3217532A1 (de) * 1981-05-11 1982-12-23 Valeo, 75848 Paris Gehaeuse zum einbau eines waermetauschers, insbesondere fuer eine heizungseinrichtung fuer den fahrgastraum eines kraftfahrzeuges
US4630673A (en) * 1982-06-21 1986-12-23 Belleli S.P.A. Clamping assembly heat exchanger tube plates
US5823251A (en) * 1996-01-26 1998-10-20 Piscine Service Anjou Sa Heat exchanger
US6289177B1 (en) 1998-06-29 2001-09-11 John W. Finger Encapsulated heating element fluid heater
US20090097926A1 (en) * 2006-04-07 2009-04-16 Paulsen Ole K Connector Assembly for an Off Shore Riser
US20100258263A1 (en) * 2007-05-10 2010-10-14 Agc Flat Glass Europe Sa Oxygen heat exchanger
US9528722B1 (en) 2014-07-16 2016-12-27 Sioux Corporation Versatile encapsulated fluid heater configuration
US20230392883A1 (en) * 2022-06-02 2023-12-07 Petróleo Brasileiro S.A. - Petrobras Device to repair leakage in high pressure shell-and-tubes heat exchanger using gasket and tensioning by cases

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5172802A (ja) * 1974-12-20 1976-06-24 Hitachi Ltd Netsukokanki
JPS61158217U (enrdf_load_stackoverflow) * 1985-03-22 1986-10-01
JPS61167831U (enrdf_load_stackoverflow) * 1985-04-09 1986-10-17

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3217532A1 (de) * 1981-05-11 1982-12-23 Valeo, 75848 Paris Gehaeuse zum einbau eines waermetauschers, insbesondere fuer eine heizungseinrichtung fuer den fahrgastraum eines kraftfahrzeuges
US4630673A (en) * 1982-06-21 1986-12-23 Belleli S.P.A. Clamping assembly heat exchanger tube plates
US5823251A (en) * 1996-01-26 1998-10-20 Piscine Service Anjou Sa Heat exchanger
US6289177B1 (en) 1998-06-29 2001-09-11 John W. Finger Encapsulated heating element fluid heater
US7883293B2 (en) * 2006-04-07 2011-02-08 Sandvik Intellectual Property Ab Connector assembly for an off shore riser
US20090097926A1 (en) * 2006-04-07 2009-04-16 Paulsen Ole K Connector Assembly for an Off Shore Riser
NO338695B1 (no) * 2006-04-07 2016-10-03 Sandvik Intellectual Property Koplingssammenstilling for et offshore-stigerør
US20100258263A1 (en) * 2007-05-10 2010-10-14 Agc Flat Glass Europe Sa Oxygen heat exchanger
US20130115562A1 (en) * 2007-05-10 2013-05-09 Agc Glass Europe Oxygen heat exchanger
US9803860B2 (en) * 2007-05-10 2017-10-31 Agc Glass Europe Oxygen heat exchanger
US10422529B2 (en) 2007-05-10 2019-09-24 Agc Glass Europe Oxygen heat exchanger
US9528722B1 (en) 2014-07-16 2016-12-27 Sioux Corporation Versatile encapsulated fluid heater configuration
US20230392883A1 (en) * 2022-06-02 2023-12-07 Petróleo Brasileiro S.A. - Petrobras Device to repair leakage in high pressure shell-and-tubes heat exchanger using gasket and tensioning by cases
US12181228B2 (en) * 2022-06-02 2024-12-31 Petróleo Brasileiro S.A.—Petrobras Device to repair leakage in high pressure shell-and-tubes heat exchanger using gasket and tensioning by cases

Also Published As

Publication number Publication date
JPS514707B2 (enrdf_load_stackoverflow) 1976-02-13
JPS4835446A (enrdf_load_stackoverflow) 1973-05-24
IT963980B (it) 1974-01-21

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