WO1994019646A1 - Dampfumformventil - Google Patents
Dampfumformventil Download PDFInfo
- Publication number
- WO1994019646A1 WO1994019646A1 PCT/EP1994/000411 EP9400411W WO9419646A1 WO 1994019646 A1 WO1994019646 A1 WO 1994019646A1 EP 9400411 W EP9400411 W EP 9400411W WO 9419646 A1 WO9419646 A1 WO 9419646A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling water
- steam
- perforated basket
- piston
- perforated
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
- F22G5/123—Water injection apparatus
- F22G5/126—Water injection apparatus in combination with steam-pressure reducing valves
Definitions
- the invention relates to a steam converter valve for reducing steam pressure and temperature.
- Valves of this type are used in power plant technology and in plants that use production steam (e.g. textile finishing plants, dyeing plants, etc.).
- Such steam conversion valves have a housing with a steam inlet, a cooling water inlet and a steam outlet.
- a relaxation space and a control piston regulating the steam and cooling water flow are arranged in the housing.
- cooling water is injected into the hot steam, which should then evaporate immediately.
- the amount of cooling water injected must be adapted to the respective amount of steam (partial load or full load).
- the injected cooling water must evaporate completely in both partial and full load operation. Otherwise, water drops occur, which lead to considerable erosion and thermal shock damage.
- steam-converting valves there are those in which the pressure reduction and cooling are separate and those in which cooling water is injected into the expansion space in a controlled manner at the same time as the pressure reduction.
- the steam converter valves with a separation of pressure reduction and cooling are preferably used where there are large changes in the amount of steam during operation. For small changes in the amount of steam, steam conversion valves are usually used
- the object of the invention is to provide a steam conversion valve which enables the controlled cooling water injection into the relaxation room with simultaneous steam pressure reduction in a safe and faultless manner in part-load operation and provides a separation between steam pressure reduction in the relaxation room and cooling water injection in full-load operation.
- the steam conversion valve has a housing with a steam inlet, a cooling water inlet and a steam outlet.
- a perforated basket forming a relaxation space and an axially displaceable control piston regulating the flow of steam and cooling water to the relaxation space are arranged in the housing.
- the control piston is rigidly connected to a tubular perforated cylinder which is axially displaceable in the perforated cage. With this perforated cylinder, the steam entry into the perforated basket and the steam outlet into a second relaxation space arranged around the perforated basket is released or blocked off.
- a coaxial nozzle tube which is connected outside of the perforated basket with the cooling water inlet.
- the nozzle pipe has injection openings for the cooling water inside the perforated basket b * '.
- the outside of the perforated basket, the nozzle pipe has an injection nozzle which projects into the steam outlet area.
- the control piston can be moved in the nozzle tube and, with a piston part, opens or blocks the injection openings in the nozzle tube for cooling water. Regulates with a second piston part
- the cooling water is thus injected via the injection openings into the expansion space at the same time as the pressure reduction, and is injected into the steam outlet area after the steam pressure reduction.
- full load operation the entire cooling water is injected into the steam outlet area via the injection nozzle after the steam pressure has been reduced.
- the cooling water is perfectly injected in partial and full load operation and completely evaporated. This means greater operational reliability and a longer service life for the steam converter valve.
- Fig. 2 shows a section through the steam converter valve in the partially open state.
- the steam conversion valve has a housing (4) with a steam inlet (1), a cooling water inlet (3) and a steam outlet (2).
- a perforated basket (11) Arranged in the housing (4) are a perforated basket (11) forming a relaxation space and an axially displaceable control piston (5) which regulates the flow of steam and cooling water to the relaxation space.
- a coaxial nozzle tube (14) projects into the perforated basket (11) and extends outside the perforated basket (11) with the cooling water inlet
- Nozzle tube (14) injection openings (15) for the cooling water (W). Outside the perforated basket (11), the nozzle tube (14) projects into the steam outlet (2) and has an injection nozzle (16) there for the cooling water (W).
- a first piston part (7) which can be displaced in the nozzle tube (14) with the control piston (5) opens the injection openings (15) in the nozzle tube (14) one after the other or shuts them off.
- a second piston part (8) regulates the cooling water inlet (3) in the size of the flow cross section (X) for the cooling water flow
- the second relaxation space (10) surrounding the perforated basket (11) is connected via flow openings (17) to the steam outlet (2) forming a third relaxation space.
- the tubular perforated cylinder (6) is divided into two areas with different functions. On its axial length range assigned to the steam inlet (1), the perforated cylinder (6) has expansion holes (6a) for steam entry into the perforated basket (11), while the axial length range assigned to the second expansion space (10) alternately as a closed shut-off wall (6b) Release and blocking of the relaxation holes in the perforated basket (11) is formed.
- the control piston (5) is formed in one piece with its two piston parts (7, 8), a piston rod (20) running between the two piston parts (7, 8), which has an annular space (13) between it and the nozzle tube (14) Cooling water flow to the injection openings (15) of the nozzle tube (14) forms.
- the two piston parts (7, 8) are guided in the nozzle tube (14) in a gas and water-tight manner by means of a piston ring seal (9), preferably made of metal.
- the flow cross section (X) of the cooling water inlet (3) has a drop-shaped pilot control cross section, which points with its large drop cross section in the direction of injection openings (15) of the nozzle pipe (14).
- the flow cross section of the cooling water inlet (3) can be formed from several pilot control holes of the same and / or different sizes.
- ER S ATZBLATT A second (outer) perforated basket (12) is arranged around the perforated basket (11) as a further relaxation stage, which bears against the inner perforated basket (11) with a partition (12a) and divides the outer perforated basket (12) into two perforated sections.
- the control piston (5) is surrounded by a perforated basket (18) at the level of the steam inlet (1), through the openings of which the steam flows in for the most uniform possible flow around the control piston (5).
- the axial distance between the two piston parts (7, 8) of the control piston (5) is dimensioned such that, in the shut-off position (see FIG. 1), the injection openings (15) of the nozzle tube (14) through the first piston part (7 ) the entire flow cross-section (X) of the cooling water inlet (3) is released from the second piston part (8) which is in an end position in the direction of the injection openings (15) and is blocked off in the direction of the injection nozzle (16).
- the perforated cylinder (6) with the control piston (5) is partially pulled out of the perforated basket (11) (cf. FIG. 2).
- the expansion holes (6a) of the perforated cylinder (6) for steam entry into the perforated basket (11) and the relaxation holes of the perforated basket (11) closed by the shut-off wall (6b) of the perforated cylinder (6) for the steam outlet are partially released.
- the injection openings (15) of the nozzle tube (14) are partially or completely cleared through the first piston part (7).
- the flow cross section (X) of the cooling water inlet (3) is then released by the second piston part (8) both in the direction of the injection openings (15) and in the direction of the injection nozzle (16).
- ER SA TZBLATT Nozzle tube (14) moved end position in which the flow cross-section (X) is completely released, the cooling water flow to the injection openings (15) of the nozzle tube (14) is shut off and the cooling water flow to the injection nozzle (16) is completely open. In this position, no cooling water (W) is injected into the perforated basket (11) forming the relaxation space.
- the relaxation volume of the perforated basket (11) is then no longer sufficient to completely evaporate the cooling water (W).
- more and more cooling water (W) is injected into the area of the steam outlet (2) via the injection nozzle (16) as the amount of steam increases. At full load operation, the entire cooling water (W) is injected there.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Valves (AREA)
- Nozzles (AREA)
- Temperature-Responsive Valves (AREA)
- Lift Valve (AREA)
- Treatment Of Fiber Materials (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU95119996A RU2118749C1 (ru) | 1993-02-18 | 1994-02-14 | Паропреобразовательный клапан |
EP94907564A EP0685054B1 (de) | 1993-02-18 | 1994-02-14 | Dampfumformventil |
AU61092/94A AU6109294A (en) | 1993-02-18 | 1994-02-14 | Steam desuperheating valve |
JP6518621A JPH08506886A (ja) | 1993-02-18 | 1994-02-14 | 蒸気変換弁 |
DE59401539T DE59401539D1 (de) | 1993-02-18 | 1994-02-14 | Dampfumformventil |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4304972.9 | 1993-02-18 | ||
DE4304972A DE4304972C2 (de) | 1993-02-18 | 1993-02-18 | Dampfumformventil |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994019646A1 true WO1994019646A1 (de) | 1994-09-01 |
Family
ID=6480775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/000411 WO1994019646A1 (de) | 1993-02-18 | 1994-02-14 | Dampfumformventil |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0685054B1 (de) |
JP (1) | JPH08506886A (de) |
CN (1) | CN1118189A (de) |
AT (1) | ATE147494T1 (de) |
AU (1) | AU6109294A (de) |
DE (2) | DE4304972C2 (de) |
DK (1) | DK0685054T3 (de) |
ES (1) | ES2098924T3 (de) |
RU (1) | RU2118749C1 (de) |
WO (1) | WO1994019646A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5385121A (en) * | 1993-01-19 | 1995-01-31 | Keystone International Holdings Corp. | Steam desuperheater |
DE19719120C2 (de) * | 1997-05-07 | 2000-10-12 | Schneider Bochumer Maschf A | Vorrichtung zur Kühlung von Heißdampf |
DE19917246C2 (de) * | 1999-04-16 | 2003-10-30 | Holter Gmbh & Co | Dampfumformventil |
DE19960065B4 (de) * | 1999-12-13 | 2011-04-14 | Theo Beurskens | Dampfumformventil in Durchgangsform |
EP2230430A1 (de) * | 2009-03-16 | 2010-09-22 | Siemens Aktiengesellschaft | Kombiniertes Regel-Schnellschluss-Ventil für eine Dampfturbine |
DE202012003033U1 (de) * | 2012-03-23 | 2013-06-26 | Vag-Armaturen Gmbh | Ringkolbenventil |
DE102014212786A1 (de) | 2014-07-02 | 2016-01-07 | Erhard Gmbh & Co. Kg | Ringkolbenventil |
CN108708978B (zh) * | 2018-08-24 | 2023-10-13 | 无锡卓尔阀业有限公司 | 一体式多级减压减温器 |
CN109833985B (zh) * | 2019-03-14 | 2020-09-04 | 重庆川仪调节阀有限公司 | 减温阀的雾化喷嘴结构 |
SE1930345A1 (en) * | 2019-10-24 | 2021-04-25 | Bvt Sweden Ab | A Steam Conditioning Valve |
CN112081932A (zh) * | 2020-10-09 | 2020-12-15 | 四川泰诺流体控制技术有限公司 | 一种旁路阀门 |
CN113654035B (zh) * | 2021-08-20 | 2023-08-04 | 射阳金港能源发展有限公司 | 一种区域供冷供热蒸汽减温减压自动控制***及方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2713150A1 (de) * | 1977-03-25 | 1978-09-28 | Schneider Bochumer Maschf A | Transformer |
US4442047A (en) * | 1982-10-08 | 1984-04-10 | White Consolidated Industries, Inc. | Multi-nozzle spray desuperheater |
EP0134454A1 (de) * | 1983-07-02 | 1985-03-20 | Welland & Tuxhorn | Mehrstufige geregelte Drosselvorrichtung |
EP0479020A1 (de) * | 1990-09-29 | 1992-04-08 | Siemens Aktiengesellschaft | Dampfumformventil mit Spindelantrieb |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3304523A1 (de) * | 1983-02-10 | 1984-08-16 | Holter Regelarmaturen Gmbh & Co Kg, 4815 Schloss Holte-Stukenbrock | Dampfumformventil |
DE3720918C1 (en) * | 1987-06-25 | 1988-11-24 | Welland & Tuxhorn | Steam reducing valve |
DD286635A5 (de) * | 1989-07-03 | 1991-01-31 | Veb Gaskombinat "Fritz Selbmann",De | Schake fuer eimerkettenbagger |
-
1993
- 1993-02-18 DE DE4304972A patent/DE4304972C2/de not_active Expired - Fee Related
-
1994
- 1994-02-14 EP EP94907564A patent/EP0685054B1/de not_active Expired - Lifetime
- 1994-02-14 JP JP6518621A patent/JPH08506886A/ja active Pending
- 1994-02-14 AU AU61092/94A patent/AU6109294A/en not_active Abandoned
- 1994-02-14 AT AT94907564T patent/ATE147494T1/de not_active IP Right Cessation
- 1994-02-14 DE DE59401539T patent/DE59401539D1/de not_active Expired - Lifetime
- 1994-02-14 RU RU95119996A patent/RU2118749C1/ru active
- 1994-02-14 ES ES94907564T patent/ES2098924T3/es not_active Expired - Lifetime
- 1994-02-14 DK DK94907564.2T patent/DK0685054T3/da active
- 1994-02-14 CN CN94191212A patent/CN1118189A/zh active Pending
- 1994-02-14 WO PCT/EP1994/000411 patent/WO1994019646A1/de active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2713150A1 (de) * | 1977-03-25 | 1978-09-28 | Schneider Bochumer Maschf A | Transformer |
US4442047A (en) * | 1982-10-08 | 1984-04-10 | White Consolidated Industries, Inc. | Multi-nozzle spray desuperheater |
EP0134454A1 (de) * | 1983-07-02 | 1985-03-20 | Welland & Tuxhorn | Mehrstufige geregelte Drosselvorrichtung |
EP0479020A1 (de) * | 1990-09-29 | 1992-04-08 | Siemens Aktiengesellschaft | Dampfumformventil mit Spindelantrieb |
Also Published As
Publication number | Publication date |
---|---|
EP0685054B1 (de) | 1997-01-08 |
ES2098924T3 (es) | 1997-05-01 |
RU2118749C1 (ru) | 1998-09-10 |
DE4304972C2 (de) | 1996-12-05 |
EP0685054A1 (de) | 1995-12-06 |
CN1118189A (zh) | 1996-03-06 |
DK0685054T3 (da) | 1997-07-14 |
ATE147494T1 (de) | 1997-01-15 |
JPH08506886A (ja) | 1996-07-23 |
DE59401539D1 (de) | 1997-02-20 |
DE4304972A1 (de) | 1994-08-25 |
AU6109294A (en) | 1994-09-14 |
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