US3434531A - Semirigid tube supporting tie - Google Patents

Semirigid tube supporting tie Download PDF

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Publication number
US3434531A
US3434531A US648111A US3434531DA US3434531A US 3434531 A US3434531 A US 3434531A US 648111 A US648111 A US 648111A US 3434531D A US3434531D A US 3434531DA US 3434531 A US3434531 A US 3434531A
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US
United States
Prior art keywords
tube
tubes
tie
panel
hanger
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
US648111A
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English (en)
Inventor
Frank W Hochmuth
Jay H Freiday
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Combustion Engineering Inc
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Combustion Engineering Inc
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Filing date
Publication date
Application filed by Combustion Engineering Inc filed Critical Combustion Engineering Inc
Application granted granted Critical
Publication of US3434531A publication Critical patent/US3434531A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/20—Supporting arrangements, e.g. for securing water-tube sets
    • F22B37/202—Suspension and securing arrangements for contact heating surfaces
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies

Definitions

  • a tube supporting tie for transversely tying together two closely spaced parallel tubes having a near side and a far side.
  • the tie comprises at least one right-hand S-shaped strap bridging the near side of the one tube and the far side of the other tube, and a left-hand S-shaped strap bridging the near side of the other tube and the far side of the one tube, whereby differential or transverse displacement of the tubes will primarily produce tensional stresses only.
  • the invention relates generally to fluid heaters of the tubular planel or platen type and more particularly to a tie for transversely supporting these platens on vertical or horizontal supporting tubes.
  • Superheater heating surface in large steam generators consists frequently of rows of suspended tubular panels or platens spaced across the upper portion of the furnace chamber, with these platens often constructed of vertical, closely spaced parallel tubes.
  • a steam generator of this type is illustrated and described in US. Patent 2,960,390 issued to F. W. Hochmuth on Nov. 15, 1960, wherein the tubular superheater platens are designated 17 and 18.
  • the platens are supported from hanger tubes which are integral parts of the platens and extend through the roof of the furnace to headers which are supported from overhead steel.
  • the herein disclosed improved tube tie overcomes the above problems by the use of pairs of S-shaped straps, one right-hand and the other left-hand. These straps are wrapped around adjacent tubes, the outermost tube of the tube panel and the hanger tube, with the ends of the straps welded to opposite sides of the tubes.
  • This construction will provide a semirigid tie with minimum space requirement between tubes. Any bending of the hanger tubes by panel sway will alternately put half of the straps in tension. There will be only negligible or no bending stress or shear stress from platen sway imposed on the tubes or ties, as would be the case with a direct weld or welded ties of conventional design.
  • the strap tie preferably is subdivided into several individual straps to reduce vertical bending stress caused by diiferential thermal expansions between the platen tubes and the hanger tube. Furthermore, the tie material, where not welded to the tubes, is cooled by being in close contact with the surface of the tubes. The tie is without long projecting portions which would be subject to high temperatures and heat damage.
  • FIGURE 1 is a diagrammatic representation of a steam generator and the upper portion of the associated furnace including superheater platens or panels to which the invention can be applied with great benefit;
  • FIGURE 2 is an enlarged fragmentary view of the tubular platens showing the location where the herein disclosed support is applied;
  • FIGURE 3 is an enlarged elevational portion of the outermost tubes of the tubular platens and the adjacent hanger tube, and the herein disclosed semirigid supporting tie connecting the platen with the hanger tube;
  • FIGURE 4 is a cross section through the tubes and tie when taken on line 4-4 of FIGURE 3.
  • 10 denotes the upper part of a furnace chamher, the walls of which are lined with steam generating tubes 11.
  • Burners 12 introduce fuel and air into the furnace chamber for the generation of combustion gases.
  • Adjacent to one side of the chamber 10 is arranged a boiler 14 to which are connected the furnace tubes 11.
  • the steam generated is discharged into a heater comprising rows of superheater tube panels 16, 17 and 18 spacedly arranged across the furnace, and through which the steam flows in the order named.
  • the combustion gases pass upwardly across the superheater panels 16, 17 and 18 and across the boiler tubes 14 to an economizer and other heat absorbing surfaces, not shown, before they are discharged into the atmosphere by conventional means.
  • each tube panel 16, 17 and 18 comprises a multiplicity of aligned parallel tubes which are closely spaced or preferably contact each other.
  • the inlet end tubes 20 of tube panel 16 are connected to header 22, while the outlet end tubes 24 form a loop 25 and continue as the inlet tubes or panel 17.
  • the outlet end tubes 26 of panel 17 are again supported by a header 28 from which the steam is conducted by way of pipe 29 to the inlet header 30 and inlet end tubes 32 of panel 18.
  • the outlet end tubes 34 of panel 18 are connected to outlet header 36 from which the steam is conducted to a point of use.
  • Supporting structure is provided including hangers '28, 39, 40, 41 and 42 for supporting headers 22, tubes 24, header 28, header 36 and header 30, respectively, from overhead steel, as shown on FIG. 1.
  • FIGS. 3 and 4 illustrate, in an enlarged view, the construction of the supporting tie 50 connecting hanger tube 20a with panel tube 16a, and is typical of the remaining supporting ties indicated in FIG. 2.
  • Tie 50 generally comprises one pair or several pairs of 'S-shaped straps.
  • One strap of each pair is called a right-hand strap and is designated 54, and the other strap is called the lefthand strap and is designated 56, although both straps may be identical in form. While the tubes of panel 16 are shown in close contact with each other and are welded at 52, the hanger tube 20a and panel tube 16a are shown at 55 slightly spaced apart to permit straps 54 and 56 to pass therebetween. Straps 54 and 56 are provided with opposite curvatures which conforms snugly to the curvature of tubes 20a and 16a, thereby atfording intimate contact with the tubes and efficient cooling. The ends 54a of strap 54 and 56a of strap 56, and the ends 5412 of strap 54 and 56b of strap 56, are strength welded to tubes 16a and 20a, respectively.
  • the supporting tie is preferably subdivided into several pairs of strips (three pairs are shown in FIG. 3) which reduces vertical bending stresses caused by differential movement between tubes such as hanger and platen tubes 20a and 16a.
  • a tube supporting tie two closely spaced parallel tubes having a near side and a far side said tubes being transversely tied together by said tube supporting tie, the improvement comprising at least one right-hand S-shaped strap passing between the tubes and shaped to conform to the contour of the tubes, and structurally connecting the near side of the one tube with the far side of the other tube, and at least one left-hand S-shaped strap passing between the tubes and shaped to conform to the contour of the tubes and structurally connecting the far side of the one tube with the near side of the other tube.
  • a tube supporting tie in accordance Wdith claim 4 wherein the tubes of said first group and the tubes of said second group are welded together to form a first tube panel r and a second tube panel, respectively.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supports For Pipes And Cables (AREA)
  • Basic Packing Technique (AREA)
US648111A 1967-06-22 1967-06-22 Semirigid tube supporting tie Expired - Lifetime US3434531A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64811167A 1967-06-22 1967-06-22

Publications (1)

Publication Number Publication Date
US3434531A true US3434531A (en) 1969-03-25

Family

ID=24599484

Family Applications (1)

Application Number Title Priority Date Filing Date
US648111A Expired - Lifetime US3434531A (en) 1967-06-22 1967-06-22 Semirigid tube supporting tie

Country Status (4)

Country Link
US (1) US3434531A (enrdf_load_stackoverflow)
ES (1) ES355064A1 (enrdf_load_stackoverflow)
FI (1) FI47602C (enrdf_load_stackoverflow)
NO (1) NO121671B (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880123A (en) * 1974-07-22 1975-04-29 Combustion Eng Semi-rigid tube supporting tie
US4220199A (en) * 1979-01-02 1980-09-02 Combustion Engineering, Inc. Plate tube spacer structure
US4263964A (en) * 1978-10-26 1981-04-28 The Garrett Corporation Heat exchanger support system
US4377025A (en) * 1978-10-26 1983-03-22 The Garrett Corporation Method of mounting heat exchanger support system
US4550777A (en) * 1983-11-25 1985-11-05 Stein Industrie System for interlocking closely ajacent vertical lengths of tube in a heat exchanger having loops
EP0166989A1 (fr) * 1984-06-05 1986-01-08 STEIN INDUSTRIE Société Anonyme dite: Panneau d'échange de chaleur à tubes verticaux, pour chaudières de récupération telles que chaudières à liqueur noire, ou sur fours d'incinération d'ordures ménagères, et procédés pour sa fabrication
US20060144562A1 (en) * 2003-01-17 2006-07-06 Marco Castello Heat exchange units
US9851160B2 (en) 2013-05-03 2017-12-26 Trane International Inc. Mounting assembly for heat exchanger coil

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2044797A (en) * 1932-09-03 1936-06-23 La Mont Corp Steam generating plant
US2834324A (en) * 1953-02-12 1958-05-13 Babcock & Wilcox Co Vapor generator with high temperature pendent superheater platens
US2914040A (en) * 1957-11-14 1959-11-24 Babcock & Wilcox Co Vapor generator
US3001514A (en) * 1959-05-13 1961-09-26 Babcock & Wilcox Co Support and expansion apparatus for a vapor generating and superheating unit
US3055349A (en) * 1959-05-11 1962-09-25 Babcock & Wilcox Co Tubular fluid heater and support therefor
US3196842A (en) * 1963-06-27 1965-07-27 Babcock & Wilcox Co Furnace

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2044797A (en) * 1932-09-03 1936-06-23 La Mont Corp Steam generating plant
US2834324A (en) * 1953-02-12 1958-05-13 Babcock & Wilcox Co Vapor generator with high temperature pendent superheater platens
US2914040A (en) * 1957-11-14 1959-11-24 Babcock & Wilcox Co Vapor generator
US3055349A (en) * 1959-05-11 1962-09-25 Babcock & Wilcox Co Tubular fluid heater and support therefor
US3001514A (en) * 1959-05-13 1961-09-26 Babcock & Wilcox Co Support and expansion apparatus for a vapor generating and superheating unit
US3196842A (en) * 1963-06-27 1965-07-27 Babcock & Wilcox Co Furnace

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880123A (en) * 1974-07-22 1975-04-29 Combustion Eng Semi-rigid tube supporting tie
US4263964A (en) * 1978-10-26 1981-04-28 The Garrett Corporation Heat exchanger support system
US4377025A (en) * 1978-10-26 1983-03-22 The Garrett Corporation Method of mounting heat exchanger support system
US4220199A (en) * 1979-01-02 1980-09-02 Combustion Engineering, Inc. Plate tube spacer structure
US4550777A (en) * 1983-11-25 1985-11-05 Stein Industrie System for interlocking closely ajacent vertical lengths of tube in a heat exchanger having loops
EP0166989A1 (fr) * 1984-06-05 1986-01-08 STEIN INDUSTRIE Société Anonyme dite: Panneau d'échange de chaleur à tubes verticaux, pour chaudières de récupération telles que chaudières à liqueur noire, ou sur fours d'incinération d'ordures ménagères, et procédés pour sa fabrication
US20060144562A1 (en) * 2003-01-17 2006-07-06 Marco Castello Heat exchange units
US7958933B2 (en) * 2003-01-17 2011-06-14 Ruths S.P.A. Heat exchange units
US9851160B2 (en) 2013-05-03 2017-12-26 Trane International Inc. Mounting assembly for heat exchanger coil

Also Published As

Publication number Publication date
FI47602B (enrdf_load_stackoverflow) 1973-10-01
ES355064A1 (es) 1970-03-01
NO121671B (enrdf_load_stackoverflow) 1971-03-29
FI47602C (fi) 1974-01-10

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