EP0080173B1 - Dampferzeuger, insbesondere Durchlaufdampferzeuger - Google Patents

Dampferzeuger, insbesondere Durchlaufdampferzeuger Download PDF

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Publication number
EP0080173B1
EP0080173B1 EP82110668A EP82110668A EP0080173B1 EP 0080173 B1 EP0080173 B1 EP 0080173B1 EP 82110668 A EP82110668 A EP 82110668A EP 82110668 A EP82110668 A EP 82110668A EP 0080173 B1 EP0080173 B1 EP 0080173B1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
steam generator
chamber wall
wall
support
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
Application number
EP82110668A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0080173A2 (de
EP0080173A3 (en
Inventor
Rudolf Kral
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.)
Kraftwerk Union AG
Original Assignee
Kraftwerk Union AG
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 Kraftwerk Union AG filed Critical Kraftwerk Union AG
Priority to AT82110668T priority Critical patent/ATE16041T1/de
Publication of EP0080173A2 publication Critical patent/EP0080173A2/de
Publication of EP0080173A3 publication Critical patent/EP0080173A3/de
Application granted granted Critical
Publication of EP0080173B1 publication Critical patent/EP0080173B1/de
Expired 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
    • F22B37/40—Arrangements of partition walls in flues of steam boilers, e.g. built-up from baffles
    • 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
    • F22B37/62—Component parts or details of steam boilers specially adapted for steam boilers of forced-flow type
    • F22B37/64—Mounting of, or supporting arrangements for, tube units
    • F22B37/645—Mounting of, or supporting arrangements for, tube units involving upper vertically-disposed water tubes and lower horizontally- or helically disposed water tubes

Definitions

  • the invention relates to a steam generator, in particular once-through steam generator, with a combustion chamber which has a combustion chamber wall formed by pipes welded to one another and in which there is an intermediate wall which hangs on an intermediate wall support arranged in a combustion chamber cross section, the ends of which depend on the outside of the combustion chamber wall a cross member is assigned.
  • Such a steam generator is known from Figure 6 on page 636 in “VGB Kraftwerkstechnik 58”, Issue 9, September 1978.
  • the intermediate wall is formed by two tube walls arranged at a distance from one another.
  • the intermediate wall girder is rigidly attached to the cross girders.
  • the crossbeams are in turn attached to support tubes by means of constant hangers, which are fastened to an outer steam generator frame.
  • the constant hangers are spring assemblies that are designed for a specific weight of the partition.
  • this weight of the intermediate wall does not remain constant, but it can in particular increase, for example, through ash deposition on the intermediate wall, or both increase and decrease due to different water content in the intermediate wall.
  • the constant hangers do not take up the differences between the respective actual partition wall weight and the partition wall weight for which they are designed, but these weight differences lead to mechanical stresses at the connection points between the partition wall and the combustion chamber wall, where they damage both the combustion chamber wall and the Partition can lead.
  • the invention has for its object to avoid such mechanical stresses caused by changes in the weight of the intermediate wall at the connection points between the combustion chamber wall and the intermediate wall.
  • a steam generator of the type mentioned is characterized according to the invention in that the intermediate wall support is movably supported on the cross members in its longitudinal direction and that support bands are attached to the cross members, which are attached with their upper ends outside on the combustion chamber wall.
  • a uniform distribution of the partition wall weight on the combustion chamber wall is achieved if the lengths and / or the cross sections of the support straps of each cross member are coordinated with one another in such a way that each support strap transfers at least approximately the same weight to the combustion chamber wall with its upper end.
  • the continuous steam generator according to FIGS. 1 to 4 has a combustion chamber with a membrane wall as the combustion chamber wall, which is constructed from fin tubes welded to one another on the fins and which hangs on an outer steam generator frame (not shown).
  • An upper part 2 of the combustion chamber wall is vertically drilled, a lower part 3 of this combustion chamber wall is drilled at an angle.
  • Within the combustion chamber in the obliquely tubular combustion chamber part formed by the lower part 3 of the combustion chamber wall, there is an intermediate wall 4 which has two tube walls 4a and 4b which are arranged at a distance from one another and are also formed as a membrane wall from fin tubes welded to one another. Both tube walls 4a and 4b are connected to one another at their upper and lower edges, forming an intermediate space between the two tube walls 4a and 4b.
  • the intermediate wall 4 with its tube walls 4a and 4b is connected to the part 3 of the combustion chamber wall with an oblique tube. It hangs on an intermediate wall support 5 which is arranged in a cross section of the combustion chamber between the two tube walls 4a and 4b. On the outside of the combustion chamber, this intermediate wall support rests with each of its two ends via a roller bearing consisting of a ball bearing 6 on the center of a cross member 7, which is located outside the combustion chamber on the outside of the combustion chamber wall and which is arranged transversely to the intermediate wall support 5.
  • vertical tension bands 8 made of steel are attached to the outside of the combustion chamber wall, the upper ends of which are welded to the part 2 of the combustion chamber wall with vertical tubing and at a large number of points on part 3 of the combustion chamber wall with oblique tubing.
  • three vertically directed steel straps 9 are attached on both sides of the top of the cross members 7 and are distributed evenly over the length of the cross members 7, each of which is welded with its upper ends to a tension band 8.
  • the carrying tapes 9 all have the same initial length, but their cross-section is smaller the closer they are to the center of the cross member 7.
  • the cross sections F of the individual support straps 9 each located on a cross member 7 are adapted to one another such that the length differences ⁇ L of the individual support straps 9 corresponding to the deflection of the cross member 7 cause the same weight of the intermediate wall 4 Correspond to tensile forces P in all carrying bands 9.
  • each of the six carrying bands 9 located on each cross member 7 transmits the same loading force P, caused by the weight of the intermediate wall 4, into the part 2 of the combustion chamber wall with vertical bores, i. H. the combustion chamber wall is evenly loaded by the weight of the intermediate wall 4. Changes in weight of the intermediate wall 4 are also transmitted uniformly to the combustion chamber wall. They do not lead to any mechanical stresses at the connection points between the combustion chamber wall and the intermediate wall 4.
  • each vertical support band 9 made of steel is also attached uniformly distributed over the length of the cross members 7 on their upper side.
  • the starting length of the carrier tapes 9 is greater the closer they are to the center of the cross members 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Detergent Compositions (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Gas Burners (AREA)
EP82110668A 1981-11-25 1982-11-18 Dampferzeuger, insbesondere Durchlaufdampferzeuger Expired EP0080173B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82110668T ATE16041T1 (de) 1981-11-25 1982-11-18 Dampferzeuger, insbesondere durchlaufdampferzeuger.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3146742A DE3146742C2 (de) 1981-11-25 1981-11-25 Dampferzeuger, insbesondere Durchlaufdampferzeuger
DE3146742 1981-11-25

Publications (3)

Publication Number Publication Date
EP0080173A2 EP0080173A2 (de) 1983-06-01
EP0080173A3 EP0080173A3 (en) 1984-09-05
EP0080173B1 true EP0080173B1 (de) 1985-10-09

Family

ID=6147197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82110668A Expired EP0080173B1 (de) 1981-11-25 1982-11-18 Dampferzeuger, insbesondere Durchlaufdampferzeuger

Country Status (10)

Country Link
US (1) US4579089A (ja)
EP (1) EP0080173B1 (ja)
JP (1) JPS5896902A (ja)
AT (1) ATE16041T1 (ja)
AU (1) AU556067B2 (ja)
DE (2) DE3146742C2 (ja)
DK (1) DK150393C (ja)
ES (1) ES517644A0 (ja)
FI (1) FI822952L (ja)
ZA (1) ZA828652B (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60170507U (ja) * 1984-04-16 1985-11-12 バブコツク日立株式会社 ボイラのバ−チカルストラツプの連結構造
DE102011054718B4 (de) * 2011-10-21 2014-02-13 Hitachi Power Europe Gmbh Verfahren zur Erzeugung einer Spannungsverminderung in errichteten Rohrwänden eines Dampferzeugers

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1248673B (de) * 1967-08-31 Vereinigte Kesselwerke Aktienge Seilschaft Dusseldorf Aufhangung gasdicht verschweißter Flossenrohrwande mit lotrechter Rohrführung
DE2213229C2 (de) * 1972-03-18 1981-12-03 Deutsche Babcock Ag, 4200 Oberhausen Anordnung zur waagerechten Abstützung von gasdicht verschweißten Rohrwänden eines Dampferzeugers
US3896874A (en) * 1972-03-31 1975-07-29 Westinghouse Electric Corp Support system for serpentine tubes of a heat exchanger
US4000720A (en) * 1975-08-18 1977-01-04 The Babcock & Wilcox Company Vapor generator
DE2621189C3 (de) * 1976-05-13 1980-02-21 Balcke-Duerr Ag, 4030 Ratingen Vorrichtung zur Aufhängung einer Rohrwand
CH634905A5 (de) * 1978-12-20 1983-02-28 Sulzer Ag Dampferzeugerwand.
US4246872A (en) * 1979-04-30 1981-01-27 General Electric Company Heat exchanger tube support
DE2918835C3 (de) * 1979-05-10 1982-02-18 Balcke-Dürr AG, 4030 Ratingen Zwangdurchlauf-Dampferzeuger
DE2919210C3 (de) * 1979-05-12 1981-10-29 Vereinigte Kesselwerke AG, 4000 Düsseldorf Kesselaufhängung

Also Published As

Publication number Publication date
AU9083482A (en) 1983-06-02
ES8308031A1 (es) 1983-08-16
DK150393B (da) 1987-02-16
AU556067B2 (en) 1986-10-23
EP0080173A2 (de) 1983-06-01
DE3146742A1 (de) 1983-06-01
FI822952A0 (fi) 1982-08-25
EP0080173A3 (en) 1984-09-05
US4579089A (en) 1986-04-01
JPH0321803B2 (ja) 1991-03-25
ATE16041T1 (de) 1985-10-15
DK522382A (da) 1983-05-26
DE3266867D1 (en) 1985-11-14
FI822952L (fi) 1983-05-26
ZA828652B (en) 1983-09-28
DE3146742C2 (de) 1983-11-10
ES517644A0 (es) 1983-08-16
JPS5896902A (ja) 1983-06-09
DK150393C (da) 1987-10-12

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