EP2577160A2 - Method for producing steam generator tubes - Google Patents
Method for producing steam generator tubesInfo
- Publication number
- EP2577160A2 EP2577160A2 EP11723314.8A EP11723314A EP2577160A2 EP 2577160 A2 EP2577160 A2 EP 2577160A2 EP 11723314 A EP11723314 A EP 11723314A EP 2577160 A2 EP2577160 A2 EP 2577160A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam generator
- shaft
- tubes
- mounting body
- grooves
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000669 Chrome steel Inorganic materials 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000010622 cold drawing Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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
- F22B37/18—Inserts, e.g. for receiving deposits from water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
- B21C37/26—Making finned or ribbed tubes by fixing strip or like material to tubes helically-ribbed tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F3/00—Coiling wire into particular forms
- B21F3/02—Coiling wire into particular forms helically
- B21F3/04—Coiling wire into particular forms helically externally on a mandrel or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F3/00—Coiling wire into particular forms
- B21F3/02—Coiling wire into particular forms helically
- B21F3/06—Coiling wire into particular forms helically internally on a hollow form
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B29/00—Steam boilers of forced-flow type
- F22B29/06—Steam boilers of forced-flow type of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes
-
- 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
-
- 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
- F22B37/101—Tubes having fins or ribs
- F22B37/103—Internally ribbed tubes
Definitions
- the invention relates to a method for producing steam generator tubes
- a steam generator is a closed, heated vessel or pressure tube system designed to provide high pressure, high temperature steam for heating and service purposes
- water tube boiler In which the flow medium - usually water - is located in steam generator tubes.
- Water-tube boilers are also used in solid-fuel combustion since the combustion chamber in which the heat is generated by combustion of the respective raw material can be designed as desired by the arrangement of pipe walls.
- Such a steam generator in the design of a water tube boiler thus comprises a combustion chamber, the surrounding wall is at least partially formed of tube walls, ie gas-tight ver ⁇ welded steam generator tubes.
- Strömungsmedi- ums furnish this steam generator tubes forming the evaporator as the heating surfaces ⁇ initially an evaporator is introduced into the unevaporated medium, and evaporated.
- the evaporator is there ⁇ usually arranged in the hottest region of the combustion chamber. He is downstream of the flow medium side, where appropriate, a device for separating water and steam and a superheater, in which the steam is further heated above its evaporation temperature to in a subsequent heat engine such.
- a preheater (a so-called economizer) can be connected upstream of the evaporator, which preheats the feed water while utilizing waste heat or residual heat, thus likewise increasing the efficiency of the overall system.
- a preheater a so-called economizer
- smooth tubes or innenberippte pipes are used for evaporator heating surfaces in steam generators. Internally ribbed tubes are then used when the flow of the flow medium in the steam generator tubes is to be forced into a twist, which causes a higher velocity of the fluid on the inner surface of the steam generator tubes.
- the use of innenberippten pipes can be required for various reasons, such. B. at a low mass flow density of the evaporator under full load. Even at high
- Heat flux densities may require the use of internally ribbed tubes (eg in drum boilers): there is a risk of film boiling, i. h., it forms on the inside of the steam generator tubes, a vapor film, in contrast to the well-mixed liquid in the nucleate boiling has a high heat-insulating effect. This has the consequence that with constant heat flow density, the wall temperature can rise sharply, which can lead to the destruction of the heating surfaces.
- inner tubes can be used to avoid flow stratification (separation of the water and vapor phases) during normal load operation (eg at minimum load in spiral-fed steam generators).
- the internal ribbing of the tubes is produced according to the prior art in a cold drawing process. According to current knowledge ⁇ stood inner finned tubes can be made 5 "6 only with materials with egg ⁇ nem maximum chromium content ⁇ . If the use of internally ribbed tubes made of high alloy chrome steel required, z., By a further increase of the steam parameters to Increase in efficiency, so the innenberippten pipes can not be produced with the currently available processes.
- the invention is therefore based on the object, a procedural ren for producing steam generator tubes indicate which a technically particularly simple manufacturing process ⁇ it enables at the same time a particularly high flexibility in terms of usable materials to achieve a particularly high efficiency of a steam generator allowed.
- This object is achieved according to the invention by fixing a mounting body in grooves of a template shaft which
- Template shaft is inserted with the mounting body in a steam generator tube, the fixation of the mounting body to the
- Template shaft is released and the stencil shaft is removed again from the steam generator tube.
- the invention proceeds from the consideration that a particularly high level of flexibility with regard to the usable Ma ⁇ terialien could be achieved in that the interior use rippten tubes are not produced in an integrated production process, but rather a subsequent introduction of swirl-generating installation bodies in smooth pipes should be done.
- the materials of steam generator tubes and built-in bodies can be selected independently of each other.
- a particularly simple production of the single building structure can then be using a stencil wave he ⁇ enough.
- a negative shape of the mounting body is introduced, so that the manufacture of the mounting body can be done by mere molding.
- Such a template shaft additionally enables a particularly simple mounting of the installation body in steam generator tubes, by fixing the installation body on the template shaft, inserting it with the molded installation body into the steam generator tube, releasing the fixation there, and removing the template shaft from the steam generator tube.
- the mounting body is fixed to the stencil shaft with a bias voltage.
- a bias voltage By such a bias voltage, it is possible that the mounting body lifts after loosening the fixation on the stencil shaft from the grooves of the stencil shaft and so automatically fixed in the steam generator tube, without further manual fixation would be required.
- a number of grooves are spirally introduced into the stencil shaft. Such a template shaft naturally generates a spiral-shaped installation body, which is particularly well suited for swirl generation in the flow medium.
- the stencil shaft is rotated after releasing the fixation of the mounting body and stencil shaft from the steam generator tube. This is possible because of the symmetry of the spiral and simplifies the removal of the template shaft from the steam generator tube provided with the installation body. This allows an even simpler manufacturing process of an internally tipped steam generator tube.
- the grooves of the template shaft are made conical.
- the conical design ensures easier assembly and reverse rotation of the stencil shaft when removed from the steam generator tube.
- the mounting body comprises a number of wires.
- a template shaft which comprises a number of grooves, namely, the installation body can be made in a particularly simple manner by corresponding shaping of wires in the grooves. This means both a special ⁇ DERS inexpensive and technically simple production of a mounting body for a steam generator tube.
- a steam generator tube produced by the method described above is used in a steam generator.
- the advantages achieved by the invention are in particular that by introducing a mounting body into a steam generator tube by means of a template shaft now a particularly simple technical solution for the production and Positioning of an installation body is present, which made it ⁇ light, using an installation body innenberippte pipes made of higher chromium alloyed steels, which are suitable for particularly high steam parameters and thus a particularly high efficiency of a steam generator.
- the production of the mounting body can be as particularly cost realized ⁇ to as the template shaft is again rotated fully out of the tube and next on ⁇ building structure can be used for the production of.
- the significant cost advantages over cold drawn internal fin tubes make the fabrication method of the present invention attractive even for materials with less than 5% chromium.
- the mounting body has low tolerances with respect to its geometry in the assembled state.
- the template shaft further Quer ⁇ strives or similar auxiliary devices are still required to ensure the desired geometry of the swirl body in the assembled state.
- Spin build-up bodies can be produced with the aid of a template shaft in commercially available lengths (for example 12 m).
- FIG 1 shows a template shaft for execution of the method according ⁇ invention
- FIG 2 is an enlarged view of the stencil in the shaft
- the groove 1 shows a template shaft 1, which is provided in a main region 2 with spirally encircling grooves 4.
- the grooves 4 are in this case arranged in the manner of a triple helix around the zy ⁇ linderförmigen body of the template shaft 1.
- the grooves 4 can also be configured as a helix with virtually any desired number.
- the desired grooves 4 can be produced individually (number, pitch, dimensions) for example via a machining Fer ⁇ actuation.
- the length of the main area 2 of the template shaft 1 is slightly longer than the smooth tube into which the installation body is to be introduced. To the main area 2 of the
- Stencil shaft 1 in the axial direction joins a connecting area 6 of which is not provided with grooves 4 and handling of the stencil shaft 1 during the Invention ⁇ proper method is used.
- FIG. 2 shows the template shaft 1 in section in a magnification ⁇ ßerten representation.
- the profile of the introduced into the template shaft 1 grooves 4 can be seen.
- the grooves 4 have a conical profile.
- Such pro- file allows a simpler joining and reverse rotation of the stencil shaft 1 in the manufacturing process of unspecified represent ⁇ provided mounting body for a steam generator tube.
- step A one or more wires are inserted depending on the number of introduced into the Schablo ⁇ nenwelle 1 grooves 4 in this. Thus, the single or multiple-start swirl body is created.
- step B the wire or wires are fixed to the stencil shaft 1 under bias.
- step C the template shaft 1 is inserted into a smooth on the inside of the steam generator tube and is positioned ⁇ the mounting body in the steam generator tube.
- step D the fixation of the mounting body made of wires to the stencil shaft 1 is released. By the prior Fixie ⁇ tion with bias in step B, the release of the fixation leads to a lifting of the mounting body of the grooves 4.
- step E the template shaft 1 along the Spirförmi ⁇ gen grooves 4 helically twisted out of the steam generator tube. This is supported by the conical shape of the grooves 4 under ⁇ .
- Template shaft 1 sets itself by the residual stress un ⁇ tercolophon firmly against the inner wall of the steam generator tube.
- the template shaft 1 is completely rotated out of the tube and can be used in step F for the production of the next mounting body.
- the continuous steam generator 10 is designed in standing construction and as Zweizugdampferzeuger. It has a surrounding wall 12, which merges into a funnel-shaped bottom 14 at the lower end of the first throttle cable formed by it.
- the containment wall 12 is constructed in a lower portion or evaporator region from evaporator tubes 16 and in an upper region or superheater area of superheater tubes 16 ⁇ .
- the evaporator tubes 16 or the re Kochhitzerroh- ⁇ 16 are connected at their longitudinal sides gas-tight manner, for example welded.
- the bottom 14 comprises a not shown discharge opening 18 for ashes.
- the evaporator tubes 16 of the surrounding wall 12 which can be flowed through from below to above by a flow medium, in particular water or a water-steam mixture, are connected with their inlet ends to an inlet header 20.
- a flow medium in particular water or a water-steam mixture
- the evaporator tubes 16 are connected via a not-shown Wasserabscheidesystem on the flow side, the following superheater tubes 16 ⁇ .
- the evaporator tubes 16 of the enclosing wall 12 form in which between the inlet header 20 and the water separator desystem implementedden section of the throttle cable a Verdampferiki Structure 22. This is followed by one of the Studentshit ⁇ tubes 16 ⁇ formed after- or Kochhitzersammlung Chemistry 24 at.
- each opening 32 of the perimeter wall 12 At the bottom of the perimeter wall 12, a number of fossil fuel burners are mounted in each opening 32 of the perimeter wall 12. In FIG. 1, four openings 32 are visible. At such an opening 32, the evaporator tubes 16 of the surrounding wall 12 are curved to bypass the respective opening 32 and extend on the outside of the vertical throttle cable. These openings can be provided in ⁇ example, for air nozzles.
- internal finned steam generator tubes made by the illustrated method in the steam generator 10 it is possible to use even steels with a chromium content of more than 5% for the production.
- Such steam generator tubes are suitable for particularly high steam parameters and thus enable a particularly high efficiency of a steam generator.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL11723314T PL2577160T3 (en) | 2010-05-31 | 2011-05-09 | Method for producing steam generator tubes |
EP11723314.8A EP2577160B1 (en) | 2010-05-31 | 2011-05-09 | Method for producing steam generator tubes |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10164426A EP2390567A1 (en) | 2010-05-31 | 2010-05-31 | Device for producing fixture units for steam generator pipes |
PCT/EP2011/057426 WO2011151135A2 (en) | 2010-05-31 | 2011-05-09 | Method for producing steam generator tubes |
EP11723314.8A EP2577160B1 (en) | 2010-05-31 | 2011-05-09 | Method for producing steam generator tubes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2577160A2 true EP2577160A2 (en) | 2013-04-10 |
EP2577160B1 EP2577160B1 (en) | 2020-07-15 |
Family
ID=43536619
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10164426A Ceased EP2390567A1 (en) | 2010-05-31 | 2010-05-31 | Device for producing fixture units for steam generator pipes |
EP11723314.8A Active EP2577160B1 (en) | 2010-05-31 | 2011-05-09 | Method for producing steam generator tubes |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10164426A Ceased EP2390567A1 (en) | 2010-05-31 | 2010-05-31 | Device for producing fixture units for steam generator pipes |
Country Status (8)
Country | Link |
---|---|
US (1) | US20130087106A1 (en) |
EP (2) | EP2390567A1 (en) |
JP (1) | JP2013532267A (en) |
KR (1) | KR20130090765A (en) |
CN (1) | CN102933899A (en) |
AU (1) | AU2011260510B2 (en) |
PL (1) | PL2577160T3 (en) |
WO (1) | WO2011151135A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012219898B4 (en) | 2012-10-31 | 2014-09-11 | Siemens Aktiengesellschaft | Resistance spot welding machine |
WO2018007036A1 (en) | 2016-07-07 | 2018-01-11 | Siemens Aktiengesellschaft | Steam generator pipe having a turbulence installation body |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE100563C (en) * | ||||
GB390347A (en) * | 1932-05-30 | 1933-04-06 | Arthur Kuhlmann | Arrangement for producing helical flow of gases, steam and liquids |
US2708306A (en) * | 1952-07-09 | 1955-05-17 | Hughes Tool Co | Method of rifling metal tubes |
US3088494A (en) * | 1959-12-28 | 1963-05-07 | Babcock & Wilcox Co | Ribbed vapor generating tubes |
FR1433888A (en) * | 1965-05-14 | 1966-04-01 | Device eliminating instantaneous vaporization in the boiler tubes | |
FR1592381A (en) * | 1968-11-20 | 1970-05-11 | ||
US6302194B1 (en) * | 1991-03-13 | 2001-10-16 | Siemens Aktiengesellschaft | Pipe with ribs on its inner surface forming a multiple thread and steam generator for using the pipe |
JPH051892A (en) * | 1991-06-24 | 1993-01-08 | Hitachi Ltd | Whirling flow promoting type boiling heat transfer tube |
DE4417524C2 (en) * | 1994-05-19 | 2001-04-26 | Behr Gmbh & Co | Process for the production and assembly of wire-wound turbulators in heat exchanger tubes and device for carrying out the process |
CN1876265A (en) * | 2005-06-07 | 2006-12-13 | 三井巴布科克(美国)有限公司 | Device and method for forming inner rib or ribbed pipe |
EP1793163A1 (en) * | 2005-12-05 | 2007-06-06 | Siemens Aktiengesellschaft | Steam generator tube, method of manufacturing the same and once-through steam generator |
EP1793164A1 (en) * | 2005-12-05 | 2007-06-06 | Siemens Aktiengesellschaft | Steam generator tube, method of manufacturing the same and once-through steam generator |
US8350176B2 (en) * | 2008-06-06 | 2013-01-08 | Babcock & Wilcox Power Generation Group, Inc. | Method of forming, inserting and permanently bonding ribs in boiler tubes |
CN201273787Y (en) * | 2008-07-30 | 2009-07-15 | 保定市金能换热设备有限公司 | Helical groove heat exchange tube with fins |
EP2184536A1 (en) * | 2008-09-09 | 2010-05-12 | Siemens Aktiengesellschaft | Steam generator pipe, accompanying production method and once-through steam generator |
DE102009024587A1 (en) * | 2009-06-10 | 2010-12-16 | Siemens Aktiengesellschaft | Flow evaporator |
US20110083619A1 (en) * | 2009-10-08 | 2011-04-14 | Master Bashir I | Dual enhanced tube for vapor generator |
-
2010
- 2010-05-31 EP EP10164426A patent/EP2390567A1/en not_active Ceased
-
2011
- 2011-05-09 KR KR1020127031219A patent/KR20130090765A/en not_active Application Discontinuation
- 2011-05-09 US US13/697,871 patent/US20130087106A1/en not_active Abandoned
- 2011-05-09 AU AU2011260510A patent/AU2011260510B2/en not_active Ceased
- 2011-05-09 CN CN2011800268147A patent/CN102933899A/en active Pending
- 2011-05-09 WO PCT/EP2011/057426 patent/WO2011151135A2/en active Application Filing
- 2011-05-09 JP JP2013512811A patent/JP2013532267A/en active Pending
- 2011-05-09 PL PL11723314T patent/PL2577160T3/en unknown
- 2011-05-09 EP EP11723314.8A patent/EP2577160B1/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2011151135A2 * |
Also Published As
Publication number | Publication date |
---|---|
KR20130090765A (en) | 2013-08-14 |
WO2011151135A3 (en) | 2012-10-11 |
WO2011151135A2 (en) | 2011-12-08 |
CN102933899A (en) | 2013-02-13 |
US20130087106A1 (en) | 2013-04-11 |
AU2011260510B2 (en) | 2014-03-20 |
EP2577160B1 (en) | 2020-07-15 |
PL2577160T3 (en) | 2020-12-14 |
AU2011260510A1 (en) | 2012-11-15 |
EP2390567A1 (en) | 2011-11-30 |
JP2013532267A (en) | 2013-08-15 |
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