EP0581760A1 - Durchlaufdampferzeuger mit einem vertikalen gaszug aus im wesentlichen vertikal angeordneten rohren. - Google Patents
Durchlaufdampferzeuger mit einem vertikalen gaszug aus im wesentlichen vertikal angeordneten rohren.Info
- Publication number
- EP0581760A1 EP0581760A1 EP91907522A EP91907522A EP0581760A1 EP 0581760 A1 EP0581760 A1 EP 0581760A1 EP 91907522 A EP91907522 A EP 91907522A EP 91907522 A EP91907522 A EP 91907522A EP 0581760 A1 EP0581760 A1 EP 0581760A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam generator
- quotient
- diameter
- continuous steam
- curve
- 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
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 title 1
- 239000002803 fossil fuel Substances 0.000 claims abstract description 5
- 239000002826 coolant Substances 0.000 claims description 11
- 239000003245 coal Substances 0.000 claims description 3
- 239000004449 solid propellant Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 17
- 239000003507 refrigerant Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000008646 thermal stress Effects 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
- F22B37/101—Tubes having fins or ribs
- F22B37/103—Internally ribbed tubes
Definitions
- the invention relates to continuous steam generator with a
- Such continuous steam generators with vertical tubing of the combustion chamber walls are cheaper to produce than those with helical tubing and also have a lower water / steam side pressure loss.
- the mass flow density of the coolant in the tube is a certain variable for the fluidic design of the parallel tube system, which is used as an evaporator heating surface works.
- Typical mass flow rates for helical tubing of the combustion chamber with tubes smooth on the inside are between 2000 and 3000 kg / m 2 s, for vertical tubing with internally finned tubes between 1500 and 2000 kg / m 2 s.
- the invention is based on the object, inexpensive to manufacture continuous steam generator to operate, reducing the temperature differences at the evaporator outlet to permissible values in an economical manner and also the application limit for continuous steam generator with vertical Extend the bore of the combustion chamber walls to a unit power significantly below 500 MW.
- this object is achieved for continuous-flow steam generators of the type mentioned at the outset in that the inner tube diameter d is a function of a quotient K and that points, determined by pairs of values from the inner tube diameter d and the quotient K, lie in a coordinate system between a curve A and the ordinate.
- the summed mass flow rate M of all tubes at 100% is used to form the quotient K
- the pitch h in m of the fins forming a multi-start thread on the inside of the tubes is at most equal to 0.9 times the root of the tube inner diameter d in m and the fin height H is at least 0.04- times the inner pipe diameter d.
- Advantageous refinements of the invention consist in the fact that points, determined by pairs of values from the inner pipe diameter c and quotient K, lie in the coordinate system between ⁇ er curve A and a straight line B, the Gera ⁇ e B by points corresponding to the pairs of values
- Curves A and B ⁇ inc are determined in such a way that the continuous steam generator can still be operated with a minimum load of 50% of full load or less in safe continuous operation without the advantages according to the invention being lost.
- Characteristic leads to a significant equalization of the steam and thus the tube wall temperatures at the outlet of the combustion chamber walls forming the evaporator heating surface.
- a continuous steam generator with a vertical gas flue 1 is surrounded by combustion chamber walls 2.
- the combustion chamber walls 2 consist of tubes 3 arranged vertically and next to one another, which are welded to one another in a gas-tight manner (FIG. 1).
- the tubes, which are welded to one another in a gastight manner form, for example in a tube-web-tube construction or in a fin tube construction, a gas-tight combustion chamber wall 2.
- the tubes 3 have ribs 4 on their inside, which form a type of multi-start thread with a pitch h and have a rib height H.
- the inner tube diameter d of the tubes 3 is defined by the calculated diameter of the circle, which has the same area as the free cross section of the tubes 3 narrowed by the ribs 4.
- the inner tube diameter d and the pitch h are mutually determined by the function h ⁇ 0, 9. ⁇ d to cause the coolant flow to swirl sufficiently.
- the Brennschauer ⁇ de 2 of the vertical throttle cable 1 carry burners for fossil fuels, not shown, which burn within the gas cable 1 and thereby generate heat. The heat is absorbed by a coolant which flows through the tubes 3 forming the combustion chamber walls 2 and evaporates in the process. Normally, appropriately treated water is used as the coolant.
- the ribs 4 protrude at least 0.04 times the inner tube diameter d into the tube 3 in order to guide the water portion of the flowing coolant on the inside of the tube, because the twist presses especially in that
- the water still present as a liquid to the inside of a tube 3, so that the tube 3 passes the heat it absorbs well to the liquid and is thereby reliably cooled.
- the inner tube diameter d is not selected independently of the quotient K according to the invention.
- the quotient K is determined by dividing the summed mass throughput (kg / s) of all tubes 3 at 100% steam output by the circumference (m) of the throttle cable 1.
- the circumference of the throttle cable 1 is measured along a line 5 shown in broken lines in FIG. 1, which connects the tube centers of the individual adjacent tubes 3 to one another.
- the inner pipe diameter d can be represented as a function of the quotient K.
- the pairs of values formed from the pipe inside diameter d and quotient K lie between curves A and B of the coordinate system according to FIG. 3.
- an inner pipe diameter d assigned to a quotient K should be at most 10% smaller or 30% larger than the inner pipe diameter d assigned to this quotient K on curve A.
- This flow rate is 100% steam output for the pipes up to a pipe inside diameter d of 25 mm between about 800 and 850 kg / m 2 s (curve A). With inner pipe diameter d greater than 25 mm, the mass flow density increases and lies between 850 and about 950 kg / m 2 s (curve A).
- the total pressure drop in the pipes 3, i.e. the difference between the pressure in the inlet manifold below and the pressure in the outlet manifold above, is made up of the proportions of friction pressure drop, geodetic pressure drop and acceleration pressure drop.
- the proportion of the acceleration pressure drop is 1 to 2% of the total pressure drop and can therefore be neglected here.
- the drop in frictional pressure of an individual pipe 3 increases in the case of an additional heating compared to other pipes as a result of the increased volume increase of the water-steam mixture.
- Coolant is largely compensated for by the same.
Landscapes
- 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)
- Devices For Medical Bathing And Washing (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Air Humidification (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Feeding And Controlling Fuel (AREA)
- Combustion Of Fluid Fuel (AREA)
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/DE1991/000319 WO1992018807A1 (de) | 1991-04-18 | 1991-04-18 | Durchlaufdampferzeuger mit einem vertikalen gaszug aus im wesentlichen vertikal angeordneten rohren |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0581760A1 true EP0581760A1 (de) | 1994-02-09 |
| EP0581760B1 EP0581760B1 (de) | 1995-01-18 |
| EP0581760B2 EP0581760B2 (de) | 2001-10-31 |
Family
ID=6863278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91907522A Expired - Lifetime EP0581760B2 (de) | 1991-04-18 | 1991-04-18 | Durchlaufdampferzeuger mit einem vertikalen gaszug aus im wesentlichen vertikal angeordneten rohren |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US5662070A (de) |
| EP (1) | EP0581760B2 (de) |
| JP (1) | JP3091220B2 (de) |
| AT (1) | ATE117420T1 (de) |
| DE (1) | DE59104348D1 (de) |
| DK (1) | DK0581760T4 (de) |
| ES (1) | ES2067227T5 (de) |
| GR (1) | GR3015181T3 (de) |
| RU (1) | RU2075690C1 (de) |
| UA (1) | UA27775C2 (de) |
| WO (1) | WO1992018807A1 (de) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| DE4333404A1 (de) * | 1993-09-30 | 1995-04-06 | Siemens Ag | Durchlaufdampferzeuger mit vertikal angeordneten Verdampferrohren |
| DE4431185A1 (de) * | 1994-09-01 | 1996-03-07 | Siemens Ag | Durchlaufdampferzeuger |
| FI102396B1 (fi) * | 1995-03-22 | 1998-11-30 | Tampella Power Oy | Menetelmä ja järjestely soodakattilan jäähdytysväliainekierrossa |
| DE19600004C2 (de) * | 1996-01-02 | 1998-11-19 | Siemens Ag | Durchlaufdampferzeuger mit spiralförmig angeordneten Verdampferrohren |
| DE19602680C2 (de) * | 1996-01-25 | 1998-04-02 | Siemens Ag | Durchlaufdampferzeuger |
| DE19644763A1 (de) * | 1996-10-28 | 1998-04-30 | Siemens Ag | Dampferzeugerrohr |
| DE19645748C1 (de) * | 1996-11-06 | 1998-03-12 | Siemens Ag | Verfahren zum Betreiben eines Durchlaufdampferzeugers und Durchlaufdampferzeuger zur Durchführung des Verfahrens |
| RU2208739C2 (ru) * | 1998-06-10 | 2003-07-20 | Сименс Акциенгезелльшафт | Прямоточный парогенератор, работающий на ископаемом топливе |
| DE19858780C2 (de) * | 1998-12-18 | 2001-07-05 | Siemens Ag | Fossilbeheizter Durchlaufdampferzeuger |
| DE19914760C1 (de) * | 1999-03-31 | 2000-04-13 | Siemens Ag | Fossilbeheizter Durchlaufdampferzeuger |
| EP1546607A4 (de) * | 2002-10-04 | 2006-05-03 | Nooter Eriksen Inc | Zwangdurchlaufverdampfer für einen dampferzeuger |
| US7021106B2 (en) | 2004-04-15 | 2006-04-04 | Mitsui Babcock (Us) Llc | Apparatus and method for forming internally ribbed or rifled tubes |
| US20080156236A1 (en) * | 2006-12-20 | 2008-07-03 | Osamu Ito | Pulverized coal combustion boiler |
| DE102009012321A1 (de) * | 2009-03-09 | 2010-09-16 | Siemens Aktiengesellschaft | Durchlaufverdampfer |
| DE102009012322B4 (de) * | 2009-03-09 | 2017-05-18 | Siemens Aktiengesellschaft | Durchlaufverdampfer |
| DE102010040214A1 (de) * | 2010-09-03 | 2012-03-08 | Siemens Aktiengesellschaft | Berohrung einer Verdampferheizfläche für Durchlaufdampferzeuger in Solarturm-Kraftwerken mit direkter Verdampfung und Naturumlauf-Charakteristik |
| DE102011004266A1 (de) * | 2011-02-17 | 2012-08-23 | Siemens Aktiengesellschaft | Sonnenkollektor mit innenberippten Rohren |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1288755A (fr) * | 1960-12-27 | 1962-03-30 | Babcock & Wilcox Co | Tube de production de vapeur nervuré |
| JPS5623603A (en) * | 1979-08-01 | 1981-03-06 | Mitsubishi Heavy Ind Ltd | Forced flowinggthrough boiler |
| JPS6042361B2 (ja) * | 1981-06-04 | 1985-09-21 | フオスタ−・ホイ−ラ−・エナ−ジイ・コ−ポレイシヨン | 炉壁を構成する旋条付内孔型流体管のためにクロスオ−バ−回路を使用した可変圧型蒸気発生装置 |
| JPH0613921B2 (ja) * | 1986-01-31 | 1994-02-23 | 三浦工業株式会社 | 多管式貫流ボイラ−の伝熱面構造 |
| EP0349834B1 (de) * | 1988-07-04 | 1996-04-17 | Siemens Aktiengesellschaft | Durchlaufdampferzeuger |
| US5069171A (en) * | 1990-06-12 | 1991-12-03 | Foster Wheeler Agency Corporation | Fluidized bed combustion system and method having an integral recycle heat exchanger with a transverse outlet chamber |
| US5094191A (en) * | 1991-01-31 | 1992-03-10 | Foster Wheeler Energy Corporation | Steam generating system utilizing separate fluid flow circuitry between the furnace section and the separating section |
-
1991
- 1991-04-18 ES ES91907522T patent/ES2067227T5/es not_active Expired - Lifetime
- 1991-04-18 DK DK91907522T patent/DK0581760T4/da active
- 1991-04-18 AT AT91907522T patent/ATE117420T1/de not_active IP Right Cessation
- 1991-04-18 WO PCT/DE1991/000319 patent/WO1992018807A1/de not_active Ceased
- 1991-04-18 EP EP91907522A patent/EP0581760B2/de not_active Expired - Lifetime
- 1991-04-18 UA UA93004094A patent/UA27775C2/uk unknown
- 1991-04-18 JP JP03506749A patent/JP3091220B2/ja not_active Expired - Lifetime
- 1991-04-18 RU RU9193058367A patent/RU2075690C1/ru active
- 1991-04-18 DE DE59104348T patent/DE59104348D1/de not_active Expired - Lifetime
-
1995
- 1995-02-24 GR GR950400019T patent/GR3015181T3/el unknown
- 1995-10-26 US US08/548,524 patent/US5662070A/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9218807A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DK0581760T3 (da) | 1995-06-26 |
| EP0581760B2 (de) | 2001-10-31 |
| EP0581760B1 (de) | 1995-01-18 |
| ES2067227T5 (es) | 2002-04-01 |
| WO1992018807A1 (de) | 1992-10-29 |
| UA27775C2 (uk) | 2000-10-16 |
| GR3015181T3 (en) | 1995-05-31 |
| JPH06500850A (ja) | 1994-01-27 |
| ES2067227T3 (es) | 1995-03-16 |
| US5662070A (en) | 1997-09-02 |
| RU2075690C1 (ru) | 1997-03-20 |
| ATE117420T1 (de) | 1995-02-15 |
| DE59104348D1 (de) | 1995-03-02 |
| JP3091220B2 (ja) | 2000-09-25 |
| DK0581760T4 (da) | 2001-12-03 |
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