EP0685054B1 - Soupape permettant de desurchauffer la vapeur - Google Patents

Soupape permettant de desurchauffer la vapeur Download PDF

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Publication number
EP0685054B1
EP0685054B1 EP94907564A EP94907564A EP0685054B1 EP 0685054 B1 EP0685054 B1 EP 0685054B1 EP 94907564 A EP94907564 A EP 94907564A EP 94907564 A EP94907564 A EP 94907564A EP 0685054 B1 EP0685054 B1 EP 0685054B1
Authority
EP
European Patent Office
Prior art keywords
steam
perforated basket
piston
injection
perforated
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 - Lifetime
Application number
EP94907564A
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German (de)
English (en)
Other versions
EP0685054A1 (fr
Inventor
Günter ZURMÜHLEN
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.)
Holter Regelarmaturen GmbH and Co KG
Original Assignee
Holter Regelarmaturen GmbH and Co KG
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 Holter Regelarmaturen GmbH and Co KG filed Critical Holter Regelarmaturen GmbH and Co KG
Publication of EP0685054A1 publication Critical patent/EP0685054A1/fr
Application granted granted Critical
Publication of EP0685054B1 publication Critical patent/EP0685054B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 flow of steam and cooling water 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 relaxation 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.
  • steam conversion valves are usually used Pressure reduction and simultaneous cooling water injection used.
  • DE-A-27 13 150 discloses a steam conversion valve with a housing having a steam inlet, a cooling water inlet and a steam outlet, in which a perforated basket forming a relaxation space and an axially displaceable control piston controlling the flow of steam and cooling water to the relaxation space are arranged.
  • a steam conversion valve with spindle drive described in EP-A-479 020 discloses a control system in which a steam flow is divided into two flows by means of a valve and is mixed with the cooling water flow.
  • the object of the invention is to provide a steam converter valve which enables the controlled cooling water injection into the relaxation room with simultaneous steam pressure reduction in a safe and faultless manner in partial 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 axially displaceable in the perforated cage tubular perforated cylinder rigidly connected. 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 extends into the perforated basket and is connected to the cooling water inlet outside the perforated basket. The nozzle tube has injection openings for the cooling water within the perforated basket forming the relaxation space.
  • the nozzle tube has an injection nozzle which protrudes 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. Controls with a second piston part the control piston the cooling water inlet in the size of the flow cross section for the cooling water flow to the injection openings and / or to the injection nozzle.
  • the cooling water is thus injected via the injection openings into the expansion space at the same time as the pressure is reduced, and is injected into the steam outlet area after the vapor pressure has been reduced.
  • 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.
  • 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.
  • the control piston (5) is rigidly connected to a perforated cylinder (6) which is axially displaceable in the perforated basket (11). This perforated cylinder (6) releases or blocks the steam inlet (D) into the perforated basket (11) and the steam outlet into a second relaxation space (10) arranged around the perforated basket (11).
  • a coaxial nozzle tube (14) projects into the perforated basket (11) and is connected to the cooling water inlet (3) outside the perforated basket (11). Inside the perforated basket (11), the nozzle tube (14) has injection openings (15) for the cooling water (W). Outside the perforated basket (11), the nozzle tube (14) projects into the steam outlet (2) and there has an injection nozzle (16) for the cooling water (W).
  • a first piston part (7) which can be moved in the nozzle tube (14) with the control piston (5), opens or blocks the injection openings (15) in the nozzle tube (14) one after the other.
  • a second piston part (8) controls the cooling water inlet (3) in the size of the flow cross section (X) for the cooling water flow the injection openings (15) in the expansion chamber and / or to the injection nozzle (16) in the steam outlet (2).
  • 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 the 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.
  • 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 at the level of the steam inlet (1) by a perforated basket (18), 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) of the injection openings (15) of the nozzle tube (14) through the first piston part (7) 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 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).
  • the second piston part (8) In full load operation, the second piston part (8) is in its second in the direction of the injection openings (15) 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.
  • 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, all 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)

Claims (8)

  1. Soupape de désurchauffage de vapeur avec un boîtier qui présente un conduit d'admission de vapeur, un conduit d'admission d'eau de refroidissement et un conduit d'émission de vapeur et dans lequel sont disposés une cage perforée formant une chambre de détente et un piston distributeur qui, déplaçable axialement, règle le débit de la vapeur et de l'eau de refroidissement à destination de la chambre de détente, le piston distributeur (5) étant raccordé rigidement et de façon immobile à un cylindre tubulaire perforé (6) qui, déplaçable axialement dans la cage perforée (11), libère et coupe l'admission de la vapeur (D) dans la cage perforée (11) ainsi que l'émission de la vapeur dans une deuxième chambre de détente (10) disposée autour de la cage perforée (11),
    caractérisée en ce que
    a) un tube injecteur (14) co-axial fait saillie dans la cage per-perforée (11) et est raccordé à l'admission d'eau de refroidissement (3) en dehors de la cage perforée (11), et présente, à l'intérieur de la cage perforée (11) des ouvertures d'injection pour l'eau de refroidissement (W) et est équipé, à l'extérieur rieur de la cage perforée (11), d'un gicleur (16) pour l'eau de refroidissement (W);
    b) le piston distributeur (5) est déplaçable dans le tube injecteur et présente deux éléments dont le premier (7) libère et bouche les ouvertures d'injection (15) dans le tube injecteur (14) tandis que le deuxième règle l'entrée d'eau de refroidissement (3) à la grandeur de la section transversale de passage (X) du courant d'eau de refroidissement à destination des ouvertures d'injection (15) et/ou du gicleur (16);
    c) la chambre de détente (10), qui entoure la cage perforée (11), est reliée mit der émission de vapeur (2) qui forme une troisième chambre de détente, dans laquelle le gicleur fait saillie.
  2. Soupape de désurchauffage de vapeur selon revendication 1,
    caractérisée en ce que
    le cylindre perforé (6) présente, pour l'admission de la vapeur, des trous de détente (6a) sur la zone longitudinale, axiale attribuée à l'admission de vapeur (1) et est conçu sous forme de paroi d'obturation (6b) sur la zone longitudinale, axiale, attribuée à la deuxième chambre de détente (10) de sorte libérer et obstruer, alternativement, les trous de détente (6a) dans la cage perforée (11).
  3. Soupape de désurchauffage de vapeur selon revendication 1 ou 2,
    caractérisée en ce que
    le piston pilote (5) est formé d'une seule pièce, ses deux parties (7, 8), une tige de piston (20) étant disposée entre les deux parties (7, 8), laquelle forme, entre elle et le tube injecteur (14), une chambre annulaire (13) pour le courant d'eau de refroidissement à destination des ouvertures d'injection (15) du tube injecteur (14).
  4. Soupape de désurchauffage de vapeur selon l'une des revendications 1 à 3,
    caractérisée en ce que
    les deux parties (7, 8) du piston pilote (5) sont pourvues de bagues d'étanchéité (9) qui assurent leurs étancheité aux gaz et à l'eau dans le tube injecteur (14).
  5. Soupape de désurchauffage de vapeur selon l'une des revendications 1 à 4,
    caractérisée en ce que
    la section transversale de passage (X) de l'admission d'eau de refroidissement (3) présente une section transversale de commande pilote en forme de goutte, dont la zone la plus grande est dirigée vers les ouvertures d'injecton (15) du tube injecteur (14).
  6. Soupape de désurchauffage de vapeur selon l'une des revendications 1 à 4,
    caractérisée en ce que
    la section transversale de passage (X) de l'admission d'eau de refroissement (3) est formée par plusieurs trous de commande pilote de même et/ou de différente grandeur.
  7. Soupape de désurchauffage de vapeur selon l'une des revendications 1 à 6,
    caractérisée en ce que
    la distance axiale entre les deux parties (7, 8) du piston pilote (5) est calculée de sorte que,
    dans la position d'obturation des ouvertures d'injection (15) du tube injecteur (14) par la première partie de piston (7), la totalité de la section transversale de passage (X) de l'admission d'eau de refroidissement (3) est libérée à destination des ouvertures d'injection (15) par la deuxième partie de piston (8) se trouvant dans une position finale et obturée en direction du gicleur (16);
    dans la position de la première partie de piston (7) libérant partiellement ou totalement les ouvertures d'injection (15) du tube injecteur (14), la section transversale de passage (X) de l'admis sion d'eau de refroidissement (3) est libérée par la deuxième partie de piston (8) en direction des ouverture d'injection (15) et en direction du gicleur (16) et que, dans la deuxième position finale de la deuxième partie de piston (8), conduisant en direction des ouvertures d'injection (15) du tube injecteur (14), la section transversale de passage (X) de l'admission d'eau de refroidissement (3) est complètement libérée, le courant d'eau à destination des ouvertures d'injection (15) du tube injecteur (14) obturé et le débit d'eau à destination du gicleur (16) entièrement ouvert.
  8. Soupape de désurchauffage de vapeur selon l'une des revendications 1 à 7,
    caractérisée en ce que
    une deuxième cage perforée (extérieure) (12) est disposée autour de la cage perforée (11) pour une phase de détention supplémentaire, une paroi séparatrice de cette deuxième cage perforée portant contre la cage perforée intérieure (11) et séparant les perforations de la cage extérieure en deux secteurs.
EP94907564A 1993-02-18 1994-02-14 Soupape permettant de desurchauffer la vapeur Expired - Lifetime EP0685054B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4304972 1993-02-18
DE4304972A DE4304972C2 (de) 1993-02-18 1993-02-18 Dampfumformventil
PCT/EP1994/000411 WO1994019646A1 (fr) 1993-02-18 1994-02-14 Soupape permettant de desurchauffer la vapeur

Publications (2)

Publication Number Publication Date
EP0685054A1 EP0685054A1 (fr) 1995-12-06
EP0685054B1 true EP0685054B1 (fr) 1997-01-08

Family

ID=6480775

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94907564A Expired - Lifetime EP0685054B1 (fr) 1993-02-18 1994-02-14 Soupape permettant de desurchauffer la vapeur

Country Status (10)

Country Link
EP (1) EP0685054B1 (fr)
JP (1) JPH08506886A (fr)
CN (1) CN1118189A (fr)
AT (1) ATE147494T1 (fr)
AU (1) AU6109294A (fr)
DE (2) DE4304972C2 (fr)
DK (1) DK0685054T3 (fr)
ES (1) ES2098924T3 (fr)
RU (1) RU2118749C1 (fr)
WO (1) WO1994019646A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19917246C2 (de) * 1999-04-16 2003-10-30 Holter Gmbh & Co Dampfumformventil

Families Citing this family (10)

* Cited by examiner, † Cited by third party
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
DE19960065B4 (de) * 1999-12-13 2011-04-14 Theo Beurskens Dampfumformventil in Durchgangsform
EP2230430A1 (fr) * 2009-03-16 2010-09-22 Siemens Aktiengesellschaft Soupape de réglage et d'arrêt rapide combinée pour une turbine à vapeur
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
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系统及方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
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
DE3304523A1 (de) * 1983-02-10 1984-08-16 Holter Regelarmaturen Gmbh & Co Kg, 4815 Schloss Holte-Stukenbrock Dampfumformventil
DE3323990C2 (de) * 1983-07-02 1986-09-04 Welland & Tuxhorn, 4800 Bielefeld Mehrstufige, geregelte Drosselvorrichtung
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
DE59103579D1 (de) * 1990-09-29 1995-01-05 Siemens Ag Dampfumformventil mit Spindelantrieb.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19917246C2 (de) * 1999-04-16 2003-10-30 Holter Gmbh & Co Dampfumformventil

Also Published As

Publication number Publication date
AU6109294A (en) 1994-09-14
CN1118189A (zh) 1996-03-06
ATE147494T1 (de) 1997-01-15
WO1994019646A1 (fr) 1994-09-01
DE4304972C2 (de) 1996-12-05
JPH08506886A (ja) 1996-07-23
EP0685054A1 (fr) 1995-12-06
DK0685054T3 (da) 1997-07-14
DE59401539D1 (de) 1997-02-20
RU2118749C1 (ru) 1998-09-10
ES2098924T3 (es) 1997-05-01
DE4304972A1 (de) 1994-08-25

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