WO2007065790A2 - Dampferzeugerrohr, zugehöriges herstellungsverfahren sowie durchlaufdampferzeuger - Google Patents
Dampferzeugerrohr, zugehöriges herstellungsverfahren sowie durchlaufdampferzeuger Download PDFInfo
- Publication number
- WO2007065790A2 WO2007065790A2 PCT/EP2006/068757 EP2006068757W WO2007065790A2 WO 2007065790 A2 WO2007065790 A2 WO 2007065790A2 EP 2006068757 W EP2006068757 W EP 2006068757W WO 2007065790 A2 WO2007065790 A2 WO 2007065790A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tube
- steam generator
- wires
- wall
- pipe
- Prior art date
Links
Classifications
-
- 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
- F22B37/18—Inserts, e.g. for receiving deposits from water
Definitions
- the invention relates to a steam generator tube with a swirl-generating inner profile. It also relates to a once-through steam generator with such steam generator pipes. The invention further relates to a method for producing a steam generator tube provided with a swirl-generating inner profile.
- a once-through steam generator In the combustion chamber walls of a once-through steam generator are usually employed with one another via webs welded gas-tight steam generator tubes to form a combustion chamber surrounding the gas flue, which are connected in parallel for the flow of a flow ⁇ medium.
- tubes with ⁇ instead of tubes with ⁇ as intermediate, separate flat bar webs may also pipes are used, which are factory equipped with angeform- th fins.
- the steam generator tubes can be arranged vertically or at an angle.
- the steam generator tubes are typically designed so that even at low mass flow density of the steam generator tubes by the flowing medium a sufficient cooling of the steam generator tubes is ensured for a si ⁇ cheres performance of the once-through steam generator.
- the heat transfer ⁇ properties of a steam generator tube An important design criterion, the heat transfer ⁇ properties of a steam generator tube.
- a high heat transfer enables a particularly effective heating of the medium flowing through the steam generator tube with reliable cooling of the steam generator tube itself.
- the heat transfer behavior of a steam generator tube can be impaired in conventional steam generators that are operated at subcritical pressures by the occurrence of so-called boiling crises.
- the pipe wall is no longer wetted by the liquid flow medium - usually water - and is therefore only insufficiently cooled. As a result of Drying out early could then reduce the strength values of the pipe wall.
- steam generator tubes which, as a result of a deformation process (eg cold drawing), have a surface structure on the inside or an inner profile in the manner of helically wound ribs.
- the shape of the ribs which is the steam generator tube Menden throughflow medium is to swirl, so that the pivoting ⁇ eral liquid phase due to the centrifugal forces acting on the tube inner wall collects and forms there a wetting flues ⁇ stechniksfilm. This ensures reliable heat transfer from the inner pipe wall to the flow medium even with comparatively high heat flow densities and low mass flow densities.
- a disadvantage of the known steam generator tubes is that they are comparatively complex to produce due to the limited deformability of the tube material.
- the formability is severely restricted, particularly in the case of high-temperature steels with a high chromium content.
- Such materials play an increasingly important role in steam generator tubes nowadays, since - at least in principle - they allow a steam generator to be designed for particularly high steam parameters, in particular for high fresh steam temperatures, and the associated high efficiency. Due to the material-related restrictions in processing, it is not possible in practice, or only with considerable effort, to produce internally finned tubes with the desired, aerodynamically advantageous finned profiles as part of a deformation process from smooth tubes.
- Steam generator tubes with internals in the manner of twisted tapes are therefore not equally suitable for all the operating conditions that usually occur with steam generators.
- the invention is therefore based on the object of specifying a steam ⁇ generator tube of the type mentioned, which has a particularly favorable heat transfer behavior with simple and inexpensive manufacturing and with a wide range of different operating conditions. Furthermore, a production method suitable for the production of such a steam generator tube and a continuous steam generator are to be specified which have a particularly simple structure with high operational safety and with high efficiency.
- the aforementioned object is achieved according to the invention by an insert disposed in the tube interior to form a drallerzeu ⁇ constricting the inner profile at least, the insert holds a plurality of wires environmentally along writhe in the manner of a multiple thread helically on the tube inner wall .
- the invention proceeds from the consideration that the multiphase flow is to have a swirl within a steam generator tube to improve the heat transfer ⁇ te, so that the liquid phase due to the rotation of the inner pipe wall is guided and wets uniformly as possible. Suitable flow-guiding elements should therefore be arranged in the interior of the tube for the targeted production and maintenance of such a swirl flow.
- the flow guidance is particularly bene- ficial if one hand does not "over-twisting" still too much pressure drops along the flow path occurring defects th ⁇ , on the other hand, the swirl effect is still intense enough to the liquid phase of the flow medium on the ge ⁇ to lead the entire pipe circumference to the inner pipe wall.
- the flow-guiding elements are substantially in the manner of a home should be nenprofils arranged on the inner tube wall and the tube ⁇ cross-section not in the center, or only block slightly.
- the swirl-generating inner profile should be implemented by means of tube internals or inserts which can be produced in the desired shape independently of the steam generator tubes and are subsequently drawn into the tube.
- the new concept presented here provides for wires or strips which, after being introduced into the steam generator pipe, wind helically along the inside wall of the pipe, so that a substantial part of the pipe cross section (more than 50%) remains free and the steam in the thus ak ⁇ accumulate inside pipe and can flow. Furthermore, it was recognized that a simple, ie catchy coil spring generally only generates a weak swirl. The flow can shear over the wire lying against the inner wall of the pipe. Because of the lower rotation the boiling crisis then occurs earlier.
- be ⁇ carries the pitch angle of each wire with respect to a vertically oriented to the tube axis reference plane min ⁇ least 30 ° and preferably at most 70 °.
- a slope angle from the interval 40 ° to is very particularly advantageous
- the respective wire in a round or in sentlichen We ⁇ rectangular cross section.
- the edges may be beitet nachbear- so that comparatively steep Flankenwin ⁇ angle and sharp-edged transitions can be realized.
- the Dräh ⁇ te can depending on the diameter of the steam generator tube and, depending on the intended flow and temperature conditions vary in diameter. In general, a wire diameter or an average cross-sectional dimension of 5% to 15% of the inner diameter of the smooth tube is advantageous.
- the wire material and the internal stress are so matched to the geometric behaves ⁇ nit that a creep or slippage of the individual coils relative to one another prevented.
- ⁇ to additionally or alternatively may be provided by extending in the direction of the tube axis support wires, each of which is fixed to the side facing the pipe interior of the helically wound wires at these a number. In this way, the effect is similar to that of the tion with the radial stiffening struts.
- the support core comprising the stiffening struts and / or the holding wires and / or the center wire can be made of a lower quality material than the twist-producing wires lying against the inner tube wall, since it is only against
- Corrosion or scaling must be protected, but is not directly exposed to the very high temperatures of the inner tube wall.
- the tube insert relatively firmly and securely seated already due to the residual stress of its wires in the steam generator tube is preferably an additional fixing vorgese ⁇ hen, wherein the respective profile forming wire at least at one point, preferably in the vicinity of its two ends fixedly connected to the inner tube wall is.
- the fixed connection is advantageously a high-temperature Schistver ⁇ connection.
- a variant which is somewhat more complex to manufacture, but which ensures particularly secure fixation comprises a plurality of spot welds distributed over the longitudinal extent of the respective wire. The welding fixation can be produced particularly well suited when at least the signals present at the tube inner wall of the insert wires similar Caribbeanset ⁇ Zung are made of a material with a the tube material.
- the Dampferzeu ⁇ gerrohre described herein are used in a fossil-fired-through steam generator.
- By swirl-producing internal profile of the tubes and the associated improvements in the heat transfer behavior also at a boiler constructions with a vertical tube assembly ( "vertical Tubing") ensures a sufficient Wär ⁇ meübertragung to the flow medium or a cooling of the tube walls.
- a Senkrechtberohrung with a higher number of tubes, and with a comparatively short lengths of pipe made possible due to the over obliquely or spirally arranged tubes lower flow rates and lower mass flux operation of the steam generator gers least throughput with reduced pressure loss and reduced min ⁇ .
- In order for the steam generator comprehensive power plant can be designed for a lower minimum load.
- Pipe fittings mentioned may lead ⁇ handy cost savings continue even with convective heating tive as it exists about plants in the heat recovery of gas and steam power, due to the improved heat transfer in a reduction of the heat exchanger surface and to interpret it.
- the above object is solved by a plurality introduced from under tension wires in a plain tube, the wires are arranged in the manner of a multiple thread, and wherein the wires after introducing the extent ent ⁇ be spanned until their turns on the tube inner wall anlie ⁇ gen in other words.
- the more common coil spring formed by the pre-aligned wires is biased by being drills for example, pulled apart or comparable in itself. In this state with a reduced diameter, the insert is drawn into the pipe.
- the wires After his partial relaxation, he presses himself against the inner pipe wall.
- the remaining internal stress of the wires is chosen so that no creep can take place at the intended operating temperature of the evaporator tube.
- the wires are advantageously welded to the inner tube wall at least at one end.
- FIG 2 is a sectional view of a steam generator tube with a swirl-generating internal profile ausbil ⁇ Denden use
- FIG. 1 shows schematically a once-through steam generator 2 with a rectangular cross section, the vertical gas train of which is formed by a surrounding or combustion chamber wall 4 which merges into a funnel-shaped bottom 6 at the lower end.
- a number of burners for a fuel are installed in an opening 8, only two of which are visible, in the combustion chamber wall 4 composed of steam generator tubes 10.
- the vertically arranged steam generator tubes 10 are welded together gas-tight in the firing area V to form an evaporator heating surface 12.
- A-train boiler (so-called tower boiler) are of course also other boiler ⁇ configurations such.
- the steam generator tubes to be described below can be used in all of these variants, both in the lighting area and in the rest of the flue gas duct.
- a use in a Abhitzedampferzeu ⁇ ger is conceivable.
- 2 shows in a sectional view a detail of the tubing of the combustion chamber wall 4 of the continuous ⁇ steam generator 2 steam generator inserted pipe 10.
- a smooth tube 20 is inserted into an insert 22, which forms a swirl-generating internal profile for improving the heat transfer behavior.
- the insert 22 comprises along winches 26 in the embodiment, three wires 24, the wall in the manner of a three-start thread with a constant slope angle ⁇ (and therefore with a constant pitch) on the tube inner ⁇ .
- the wires 24 rest firmly against the inner tube wall 26.
- the wires 24 are each fixed at a number of locations, in particular in the vicinity of their two ends, by spot welding to the inner tube wall 26.
- the wires 24 as well as the tube wall 28 of the smooth tube 20 receiving them are made of a heat-resistant metallic material with a high chromium content.
- suitable materials that are known to the person skilled in the art, e.g. B. 13CrMo44.
- the cross-sectional profile of the wires 24 is an important design criterion.
- the respective ligen wire 24 whose height and width and the flank angle with respect to the inner tube wall 26 and the sharpness of the edges can be predetermined.
- the geometric parameters are generally chosen in a manner similar to that of the fins of conventional finned tubes.
- a location-dependent adaptation and optimization can also take place, which takes into account the course of the heating profile along the combustion chamber wall 4.
- FIG. 3 shows a further development of the prior art of Figure 2 embodiment of the steam generator tube 10, in which the voltage applied to the tube inner wall 26 of wires 24 are connected via welded ra ⁇ Diale stiffening struts 30 with an extending along the tube axis center wire 32, so that a comparison slip of individual spring courses or wire turns against each other is effectively prevented even when the spring action decreases. Since the wire, the reinforcing struts 30 and the means 32 ⁇ comprehensive support core not exposed to high temperatures such as the voltages applied to the inner tube wall 26, swirl-generating wires 24, it is made from a less high-grade material.
- each three NEN radial stiffening struts 30 summarized the Rankin ⁇ a seed in a Community cross-sectional plane through the steam generator tube 10 lie ⁇ constricting regular star. Several of these stars are arranged one behind the other at regular intervals in the longitudinal direction of the steam generator tube 10. As can be seen from the cross section through the steam generator tube 10 shown in the top right section of FIG. 3, all are
- FIG. 4 finally shows a further embodiment variant, which can also be combined with the variant known from FIG. 3 can.
- 34 are provided three running parallel to the tube axis Hal ⁇ tedrähte which prevent a slipping of the swirl-producing helically wound wires 24th
- the holding wires 34 are distributed uniformly over the inner tube circumference and are each fixed to the tube 24 on the side facing the tube interior 18.
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- 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)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0619408-7A BRPI0619408A2 (pt) | 2005-12-05 | 2006-11-22 | tubo gerador de vapor, método de produção associado e gerador de vapor contìnuo |
US12/086,100 US8122856B2 (en) | 2005-12-05 | 2006-11-22 | Steam generator pipe, associated production method and continuous steam generator |
CN2006800457519A CN101389904B (zh) | 2005-12-05 | 2006-11-22 | 蒸汽发生器管以及直通式蒸汽发生器 |
CA002632381A CA2632381A1 (en) | 2005-12-05 | 2006-11-22 | Steam generator pipe, associated production method and continuous steam generator |
EP06819666.6A EP1957864B1 (de) | 2005-12-05 | 2006-11-22 | Dampferzeugerrohr, zugehöriges herstellungsverfahren sowie durchlaufdampferzeuger |
JP2008542724A JP4948543B2 (ja) | 2005-12-05 | 2006-11-22 | 蒸気発生管並びに貫流ボイラ |
AU2006324057A AU2006324057B2 (en) | 2005-12-05 | 2006-11-22 | Steam generator pipe, associated production method and continuous steam generator |
KR1020087015936A KR101332251B1 (ko) | 2005-12-05 | 2006-11-22 | 증기 발생기 파이프, 그 제조 방법 및 연속 증기 발생기 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05026487A EP1793164A1 (de) | 2005-12-05 | 2005-12-05 | Dampferzeugerrohr, zugehöriges Herstellungsverfahren sowie Durchlaufdampferzeuger |
EP05026487.8 | 2005-12-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007065790A2 true WO2007065790A2 (de) | 2007-06-14 |
WO2007065790A3 WO2007065790A3 (de) | 2008-09-25 |
Family
ID=36889270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/068757 WO2007065790A2 (de) | 2005-12-05 | 2006-11-22 | Dampferzeugerrohr, zugehöriges herstellungsverfahren sowie durchlaufdampferzeuger |
Country Status (13)
Country | Link |
---|---|
US (1) | US8122856B2 (de) |
EP (2) | EP1793164A1 (de) |
JP (1) | JP4948543B2 (de) |
KR (1) | KR101332251B1 (de) |
CN (1) | CN101389904B (de) |
AR (1) | AR056825A1 (de) |
AU (1) | AU2006324057B2 (de) |
BR (1) | BRPI0619408A2 (de) |
CA (1) | CA2632381A1 (de) |
RU (1) | RU2419029C2 (de) |
TW (1) | TWI373594B (de) |
WO (1) | WO2007065790A2 (de) |
ZA (1) | ZA200803925B (de) |
Families Citing this family (24)
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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 |
EP2184536A1 (de) * | 2008-09-09 | 2010-05-12 | Siemens Aktiengesellschaft | Dampferzeugerrohr, zugehöriges Herstellungsverfahren sowie Durchlaufdampferzeuger |
DE102009024587A1 (de) * | 2009-06-10 | 2010-12-16 | Siemens Aktiengesellschaft | Durchlaufverdampfer |
US8631871B2 (en) * | 2009-07-27 | 2014-01-21 | Innovative Steam Technologies Inc. | System and method for enhanced oil recovery with a once-through steam generator |
EP2390566A1 (de) * | 2010-05-31 | 2011-11-30 | Siemens Aktiengesellschaft | Vorrichtung zum Herstellen von Einbaukörpern für Dampferzeugerrohre |
EP2390039A1 (de) * | 2010-05-31 | 2011-11-30 | Siemens Aktiengesellschaft | Vorrichtung zum stoffschlüssigen Verbinden eines Einbaukörpers in ein Dampferzeugerrohr mit einer exzentrisch bezüglich der Mittelachse des Brennerrohrs angeordneten Schweissdrahtdüse |
EP2390567A1 (de) * | 2010-05-31 | 2011-11-30 | Siemens Aktiengesellschaft | Verfahren zum Herstellen von Dampferzeugerrohren |
DE102010040206A1 (de) * | 2010-09-03 | 2012-03-08 | Siemens Aktiengesellschaft | Solarthermischer Absorber zur Direktverdampfung, insbesondere in einem Solarturm-Kraftwerk |
DE102010042457A1 (de) * | 2010-10-14 | 2012-04-19 | Siemens Aktiengesellschaft | Verfahren zur Steuerung einer Punktschweißanlage und zugehörige Punktschweißanlage |
JP5850693B2 (ja) * | 2011-10-05 | 2016-02-03 | 日野自動車株式会社 | 熱交換器用チューブ |
US20130118626A1 (en) * | 2011-11-15 | 2013-05-16 | Illinois Tool Works Inc. | Method of attaching a stiffening wire inside a flexible hose assembly |
RU2522759C2 (ru) * | 2012-09-18 | 2014-07-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Воронежский государственный технический университет" | Теплообменный элемент |
RU2537643C2 (ru) * | 2012-09-18 | 2015-01-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Воронежский государственный технический университет" | Способ повышения эффективности теплообменного элемента |
US20160201908A1 (en) * | 2013-08-30 | 2016-07-14 | United Technologies Corporation | Vena contracta swirling dilution passages for gas turbine engine combustor |
KR20160025700A (ko) | 2014-08-27 | 2016-03-09 | 주식회사 한국피이엠 | 나선형 리브가 마련된 파이프를 제조하기 위한 로테이팅 몰드, 파이프 제조장치 및 파이프 제조방법 |
GB201513415D0 (en) * | 2015-07-30 | 2015-09-16 | Senior Uk Ltd | Finned coaxial cooler |
KR200483312Y1 (ko) | 2016-04-19 | 2017-04-27 | 주식회사 한국피이엠 | 나선형 리브가 마련된 파이프를 제조하기 위한 로테이팅 몰드 및 파이프 제조장치 |
WO2017204283A1 (ja) * | 2016-05-25 | 2017-11-30 | ヤンマー株式会社 | 熱電発電装置及び熱電発電システム |
US11512849B2 (en) | 2016-07-07 | 2022-11-29 | Siemens Energy Global GmbH & Co. KG | Steam generator pipe having a turbulence installation body |
WO2018088395A1 (ja) * | 2016-11-11 | 2018-05-17 | カルソニックカンセイ株式会社 | フィン内蔵管の製造方法及び二重管の製造方法 |
US20190346216A1 (en) * | 2018-05-08 | 2019-11-14 | United Technologies Corporation | Swirling feed tube for heat exchanger |
KR102054506B1 (ko) * | 2018-06-28 | 2019-12-10 | 천휘철 | 다용도 스팀기 |
CN113899228B (zh) * | 2021-10-12 | 2023-07-14 | 湖南有色金属职业技术学院 | 一种管壳式换热器 |
CN114368860A (zh) * | 2022-01-25 | 2022-04-19 | 吉亮未来水科技(深圳)有限公司 | 一种治理黑臭水体的雨淋补氧装置 |
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2005
- 2005-12-05 EP EP05026487A patent/EP1793164A1/de not_active Withdrawn
-
2006
- 2006-11-22 KR KR1020087015936A patent/KR101332251B1/ko active IP Right Grant
- 2006-11-22 WO PCT/EP2006/068757 patent/WO2007065790A2/de active Application Filing
- 2006-11-22 US US12/086,100 patent/US8122856B2/en not_active Expired - Fee Related
- 2006-11-22 CN CN2006800457519A patent/CN101389904B/zh active Active
- 2006-11-22 RU RU2008127369/06A patent/RU2419029C2/ru not_active IP Right Cessation
- 2006-11-22 JP JP2008542724A patent/JP4948543B2/ja active Active
- 2006-11-22 CA CA002632381A patent/CA2632381A1/en not_active Abandoned
- 2006-11-22 EP EP06819666.6A patent/EP1957864B1/de active Active
- 2006-11-22 AU AU2006324057A patent/AU2006324057B2/en not_active Ceased
- 2006-11-22 BR BRPI0619408-7A patent/BRPI0619408A2/pt not_active IP Right Cessation
- 2006-12-01 AR ARP060105308A patent/AR056825A1/es unknown
- 2006-12-04 TW TW095144956A patent/TWI373594B/zh not_active IP Right Cessation
-
2008
- 2008-05-08 ZA ZA200803925A patent/ZA200803925B/xx unknown
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DE100563C (de) * | ||||
GB692306A (en) * | 1949-12-05 | 1953-06-03 | Robert John Frost | Improvements in and relating to electric steam generators |
GB1146162A (en) * | 1965-12-27 | 1969-03-19 | American Radiator & Standard | Improvements in and relating to heat exchangers |
EP0302125A1 (de) * | 1987-08-01 | 1989-02-08 | Elena Ronchi | Schnelldampferzeuger für Haushalts- und Fachgebrauch |
WO2005018837A1 (en) * | 2003-08-23 | 2005-03-03 | Technoscience Integrated Technology Appliances Pte Ltd | A portable sanitizer |
Also Published As
Publication number | Publication date |
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WO2007065790A3 (de) | 2008-09-25 |
AR056825A1 (es) | 2007-10-24 |
TWI373594B (en) | 2012-10-01 |
KR101332251B1 (ko) | 2013-11-25 |
EP1793164A1 (de) | 2007-06-06 |
CN101389904A (zh) | 2009-03-18 |
JP2009518610A (ja) | 2009-05-07 |
CN101389904B (zh) | 2011-07-06 |
KR20080081941A (ko) | 2008-09-10 |
US20090095236A1 (en) | 2009-04-16 |
AU2006324057A1 (en) | 2007-06-14 |
US8122856B2 (en) | 2012-02-28 |
CA2632381A1 (en) | 2007-06-14 |
JP4948543B2 (ja) | 2012-06-06 |
EP1957864A2 (de) | 2008-08-20 |
TW200730772A (en) | 2007-08-16 |
RU2008127369A (ru) | 2010-01-20 |
EP1957864B1 (de) | 2017-04-26 |
AU2006324057B2 (en) | 2010-11-18 |
RU2419029C2 (ru) | 2011-05-20 |
BRPI0619408A2 (pt) | 2011-10-04 |
ZA200803925B (en) | 2009-03-25 |
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