US3675628A - Wall elements for steam generators - Google Patents

Wall elements for steam generators Download PDF

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Publication number
US3675628A
US3675628A US81045A US3675628DA US3675628A US 3675628 A US3675628 A US 3675628A US 81045 A US81045 A US 81045A US 3675628D A US3675628D A US 3675628DA US 3675628 A US3675628 A US 3675628A
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United States
Prior art keywords
wall section
pipes
supporting
passage
adjacent pipes
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
US81045A
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English (en)
Inventor
Rudolf Seibold
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.)
Hitachi Zosen Inova Steinmueller GmbH
Original Assignee
L&C Steinmueller GmbH
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Filing date
Publication date
Application filed by L&C Steinmueller GmbH filed Critical L&C Steinmueller GmbH
Application granted granted Critical
Publication of US3675628A publication Critical patent/US3675628A/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
    • F22B37/24—Supporting, suspending, or setting arrangements, e.g. heat shielding

Definitions

  • the present invention relates to wall elements for steam generators, which elements consist of gas-tight fin pipes, pipeweb pipes or of pipes with a skin casing, which pipes are welded to each other. These pipe systems are furthermore provided with means for mounting elements of framework thereon.
  • FIG. I illustrates the mounting of a framework on a vertical pipe wall. More specifically, FIG. 1 is a section along the line l-l of FIG. 2.
  • FIG. 2 is a section taken along the line Il-II of FIG. 1.
  • FIG. 3 is a view taken along the line III-III of FIG. 2.
  • FIGS. 4 to 6 show the mounting of a framework on a horizontally extending pipe wall, and more specifically, FIG. 4 is a section taken along the line IV-IV of FIG. 5.
  • FIG. 5 is a section taken along the line V-V of FIG. 4.
  • FIG. 6 is a view taken along the line VI-VI of FIG. 4.
  • FIGS. 7 and 9 illustrate a modification according to the invention with the assumption that the heating surfaces are rather soiled. More specifically, FIG. 7 is a section taken along the line VII-VII of FIG. 8. FIG. 8 is a section taken along the line VIII-VIII of FIG. 7.
  • FIGS. 9 and 10 illustrate still another embodiment of the in vention according to which the pipes are not connected by fins while FIG. 9 shows the bending of the pipes.
  • FIG. I I illustrates the mounting of a framework on the inner wall of the steam generator through the access hatch.
  • Steam generator wall elements comprising fin pipes, pipeweb pipes, or pipes with a skin casing, which pipes are welded to each other in a gas-tight manner while the wall elements are provided with means for mounting installation and repair elements or framework systems are characterized primarily in that in a symmetric or offset arrangement, the fins or webs of the steam generator wall elements are provided with recesses for receiving elements used in connection with the assembly or repair of such steam generator wall elements.
  • These installation or repair elements are provided with spacers, and with flanges, edges, or the like. These flanges, edges, or the like, are by securing means held in the fins or webs of the pipe wall. These securing means are connected by means of yokes or other suitable means.
  • the assembly or repair elements may include supporting irons which are adapted to be moved through recesses in the fins or webs until they abut against the interior of the steam generators.
  • the pipes are, in conformity with the supporting iron bent, while parallel jaws are mounted as confinement.
  • the advantages obtained by the present invention consist primarily in that instead of having to build up a scaffold or framework from the bottom of the steam generator or suspending platfonns or baskets from the ceiling of the steam generator, it is merely necessary to install a working scaffold within the direct range of the damaged area.
  • a working platform can, in a minimum of time, be passed through the nearest access hatch and can be withdrawn after effected repair again through said hatch. In this way, the idling time of the steam generator can be reduced to a minimum.
  • FIGS. I 3 it is merely necessary for purposes of checking or repair operations to suspend a repair stand 6 in the recesses 3 by means of supporting members 5.
  • the supporting members 5 are so designed that they can be hooked in and hooked out of recesses 3 only when inclining the repair stand 6.
  • the spacer members 7 will prevent the repair stand 6 from turning laterally.
  • the repair stand is in vertical direction, i.e., is in hooked-in condition, the repair stand 6 is secured against an accidental hooking out by the shape of the supporting members 5 which has its upper protrusion 5' in engagement with the outside of the fin or web 2.
  • the vertical play necessary for the installing condition of support 5 is, following the suspension of the support stand 6, eliminated by means of safety members 8, 9.
  • safety means 8 block the vertical movement of the support 5, and yoke 9 secures the safety means 8 from dropping out.
  • FIGS. 4 to 6 show a similar device as FIGS. 1 to 3 for use with horizontal or only slightly inclined pipe walls.
  • the support 5 is passed through a recess 3 through the fins or webs 2 and directed to the pipe 1 and by means of spacer members 7 secured against lateral displacement.
  • a cover or hood 4 is mounted on the rear portion of the pipes.
  • a supporting iron 12 is mounted in the recesses 3 of the pipe webs 2 and in a similar recess of the head plate 11, said iron 12 having engaging and disengaging means 13 and an end plate 14.
  • a cap 15 screwed onto the head plate 11 will assure a gas-tight closure.
  • the supporting iron I 2 is substantially precisely shaped in conformity with the recess 3 and seals the same against the entry of combustion residues.
  • the framework it is in such an instance merely necessary to remove the part 12' and to replace the same by a supporting iron 12.
  • the recess in head plate 11 is, in conformity with the extension or step of part 12' designed greater than the recess 3 of the pipe web 2.
  • cap 15 is removed, if desired, part I2 is exchanged for supporting iron 12, and the supporting iron 12 is moved into the boiler until its end plate 14 engages the head plate 11. 'I'hereupon, the end plate 14 is screwed to the head plate 11 for securing the position of the supporting iron 12.
  • the supporting iron 12 which now extends into the boiler will, by means of its latching means 13, serve for fastening or securing the repair framework.
  • FIGS. 9, l0 illustrate the employment of the above outlined principle to a boiler with non-welded pipe walls (skin casing).
  • the pipes l are bent inwardly or are slightly deformed for obtaining recess 3.
  • Above and below the said recess the pipes are welded to each other by means of parallel plates 16.
  • the studs 10 are tightly connected to the sealing sheet metal skin 17.
  • the other parts correspond to those of FIGS. 7, 8.
  • the establishment of the framework is then effected in the following manner illustrated in FIG. 11. Through a hatch 20 provided in the boiler wall, a ladder connected to the outside is introduced. On both sides of .the door and in the pipe wall there are located the recesses 3 into which from said ladder frame elements 6 are latched.
  • These frame elements may have a foldable cantilever 22 on which bolts 23 or the like may be placed.
  • the thus formed platform may be broadened toward all sides in the plane of the pipe wall.
  • the cantilever 22 on which the plates 25 are provided may be connected to each other by profiles 24.
  • a wall section of a steam generator which includes: a plurality of pipes arranged substantially parallel to and near each other, and means interconnecting adjacent pipes of said wall section and defining therewith passage means having openings for receiving supporting means hung into openings for supporting a platform for installation and repair purposes.
  • a wall section of a steam generator which includes; a plurality of pipes arranged substantially parallel to and near each other, and means interconnecting adjacent pipes of said wall section and defining therewith passage means for receiving supporting means for supporting a platform for installation and repair purposes, said pipes being finned pipes, and the means interconnecting adjacent pipes of said wall sections being formed by welded together fins of said pipes, said passage means being provided in said welded together fins.
  • a wall section of a steam generator which includes: a plurality of pipes arranged substantially parallel to and near each other, and means interconnecting adjacent pipes of said wall section and defining therewith passage means for receiving supporting means for supporting a platform for installation and repair purposes, the means interconnecting adjacent pipes of said wall section being formed by plate means extending across the gap between adjacent pipes and being welded thereto, said plate means together with peripheral portions of adjacent pipes forming said passage means.
  • a wall section of a steam generator which includes a plurality of pipes arranged substantially parallel to and near each other, means interconnecting adjacent pipes of said wall section and defining therewith passage means having openings, supporting means hung extending inside through said passage means and detachably secured to said wall section, and platform means supported by said supporting means.
  • a wall section of a steam generator which includes: a plurality of pipes arranged substantially parallel to and near each other, means interconnecting adjacent pipes of said wall section and defining therewith passage means, supporting means extending through said passage means and detachably secured to said wall section, and platform means supported by said supporting means including stabilizing means engaging the respective adjacent pipes for preventing accidental lateral movement of said supporting means.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Movable Scaffolding (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
US81045A 1969-10-16 1970-10-15 Wall elements for steam generators Expired - Lifetime US3675628A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691952140 DE1952140A1 (de) 1969-10-16 1969-10-16 Dampferzeugerwandelemente mit Einruestvorrichtungen

Publications (1)

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US3675628A true US3675628A (en) 1972-07-11

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US81045A Expired - Lifetime US3675628A (en) 1969-10-16 1970-10-15 Wall elements for steam generators

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US (1) US3675628A (fr)
DE (1) DE1952140A1 (fr)
FR (1) FR2058987A5 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4934322A (en) * 1987-12-22 1990-06-19 Societe Anonyme Dite: Stein Industrie System for protecting a heat-recovery boiler screen, and a method of manufacturing the system
US20180045402A1 (en) * 2015-03-24 2018-02-15 Mitsubishi Hitachi Power Systems, Ltd. Boiler

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232636A (en) * 1979-04-09 1980-11-11 Combustion Engineering, Inc. Maintenance platform built upon retractable support beams
DE29806076U1 (de) * 1998-04-02 1998-06-18 Siemens AG, 80333 München Dampferzeuger und Hilfsmittel zum Arbeiten in einem Dampferzeuger
DE19843795C2 (de) * 1998-09-24 2001-05-23 Abb Alstom Power Comb Gmbh Horizontale Bandage zur Aufnahme des Brennkammerdrucks für die Außenwände eines Dampferzeugers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999483A (en) * 1957-11-08 1961-09-12 Combustion Eng Furnace wall and support construction
US3055349A (en) * 1959-05-11 1962-09-25 Babcock & Wilcox Co Tubular fluid heater and support therefor
US3448726A (en) * 1966-12-23 1969-06-10 Sulzer Ag Steam generator having a flue and an access shaft

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999483A (en) * 1957-11-08 1961-09-12 Combustion Eng Furnace wall and support construction
US3055349A (en) * 1959-05-11 1962-09-25 Babcock & Wilcox Co Tubular fluid heater and support therefor
US3448726A (en) * 1966-12-23 1969-06-10 Sulzer Ag Steam generator having a flue and an access shaft

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4934322A (en) * 1987-12-22 1990-06-19 Societe Anonyme Dite: Stein Industrie System for protecting a heat-recovery boiler screen, and a method of manufacturing the system
US20180045402A1 (en) * 2015-03-24 2018-02-15 Mitsubishi Hitachi Power Systems, Ltd. Boiler
US10330309B2 (en) * 2015-03-24 2019-06-25 Mitsubishi Hitachi Power Systems, Ltd. Boiler

Also Published As

Publication number Publication date
FR2058987A5 (fr) 1971-05-28
DE1952140A1 (de) 1971-04-29

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