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EP2930407B1 - Système de vannes - Google Patents

Système de vannes Download PDF

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Publication number
EP2930407B1
EP2930407B1 EP14001319.4A EP14001319A EP2930407B1 EP 2930407 B1 EP2930407 B1 EP 2930407B1 EP 14001319 A EP14001319 A EP 14001319A EP 2930407 B1 EP2930407 B1 EP 2930407B1
Authority
EP
European Patent Office
Prior art keywords
valve
pressure
pressure region
region
low
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.)
Active
Application number
EP14001319.4A
Other languages
German (de)
English (en)
Other versions
EP2930407A1 (fr
Inventor
André Dr. Biegner
Anton Wellenhofer
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.)
Linde GmbH
Original Assignee
Linde GmbH
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=50478991&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2930407(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Linde GmbH filed Critical Linde GmbH
Priority to EP14001319.4A priority Critical patent/EP2930407B1/fr
Publication of EP2930407A1 publication Critical patent/EP2930407A1/fr
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Publication of EP2930407B1 publication Critical patent/EP2930407B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/50—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/04—Feeding or distributing systems using pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/14—Details thereof
    • F23K5/16—Safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2208/00—Safety aspects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2900/00—Special features of, or arrangements for fuel supplies
    • F23K2900/05001—Control or safety devices in gaseous or liquid fuel supply lines

Definitions

  • the invention relates to a valve arrangement for a pressurized with a fluid system for connecting a first pressure range with a second pressure range, in particular a low-pressure region with a high-pressure region.
  • Such a valve arrangement is, for example, in the EP 2 492 772 A2 shown.
  • a supply of the fluid often takes place over a low pressure area, i. a part of the installation designed for low pressure sufficient for the supply or storage tank and / or tank.
  • a high pressure area i. however, a part of the system designed to be pressurized with the fluid under high pressure is used as the process side.
  • Low-pressure and high-pressure areas are often referred to as low-pressure and high-pressure sides, since they have two sides of a system designed for different pressures, i. Piping, apparatus and other equipment.
  • a safety valve is used to prevent unacceptable pressure exceeding, as also below with reference to FIG. 1 described.
  • contamination of the low pressure area with undesirable substances can not be prevented here as well.
  • the present invention therefore has the object to provide an effective shut-off device for connecting a low-pressure region with a high-pressure region in a fluid-loaded system.
  • valve arrangement for a system acted upon by a fluid for connecting a first pressure region to a second pressure region having the features of patent claim 1.
  • a valve arrangement according to the invention is used for a fluid-loaded system for connecting a first pressure range to a second pressure range.
  • the connection takes place by means of a first valve and a second valve connected in series.
  • the first pressure region comprises a low-pressure region, ie a plant part which is designed for low pressure and / or operated at low pressure
  • the second pressure region a high-pressure region, ie a plant part which is designed for high pressure and / or operated at high pressure can be.
  • a third valve connects a region between the first and the second valve to a third pressure region, in which the pressure, in particular the operating pressure, in particular is lower than in the first pressure range, for example, it is an open output to a torch, ie there is usually atmospheric pressure.
  • the first valve is arranged to close when a pressure applied to the side of the second pressure range is at least as high as a pressure applied to the side of the first pressure range.
  • the first valve is controlled by its own medium.
  • the first valve is coupled to the second valve such that the second valve closes when the first valve closes, and the second valve is coupled to the third valve such that the third valve opens when the second valve closes.
  • the connection between the first and the second pressure region is closed or shut off by the first and the second valve.
  • Fluid which remains in the area between the first and second valve, can flow off via the third valve, so there is a vent. Since there is a lower pressure in the region between the first and second valve than in the first pressure region, there can be no backflow of fluid into the first pressure region.
  • the process of shut-off and bleeding is done completely automatically by the valve assembly. Even if now the first and second valves are not completely sealed, no fluid flows from the second pressure range in the first pressure range, since the fluid instead flows through the third valve in the third pressure range. Exceeding the pressure in the first pressure range, ie in particular the low-pressure region, is thus effectively prevented. Likewise, there can be no contamination with undesirable substances there. In the case of a liquid metering, there is also no backflow of gas into the liquid-filled system in the low-pressure region.
  • the first valve via a switching device, in particular a valve or solenoid valve is coupled to the second valve.
  • a switching device in particular a valve or solenoid valve is coupled to the second valve.
  • the first valve with the switching device is mechanically, pneumatically or hydraulically coupled.
  • an optimal coupling can be selected, which ensures a fast operative connection.
  • the second valve with the switching device is electrically, hydraulically or pneumatically coupled.
  • an optimal coupling can be selected, which ensures a fast operative connection.
  • the coupling between the first valve and the switching device and the second valve and switching device may be of the same type.
  • a pneumatic coupling of the switching device and the second valve can be selected.
  • the second valve with the third valve mechansich, electrically, hydraulically or pneumatically coupled.
  • an optimal and most efficient coupling in particular also depending on the coupling of the second valve with the switching device, can be selected.
  • the third valve for example, does not require its own valve drive, but can be moved along via the valve drive of the second valve.
  • the third valve is coupled to the second valve indirectly via the switching device. This is quite effective, for example, in electrical coupling and an electrical switching device.
  • the first valve is arranged closer to the first pressure region than the second valve.
  • the low-pressure region is protected with a self-medium controlled valve. Since the first valve in the case of excessive pressure on the side of the second, ie in particular the high-pressure region, closes or shuts off first, the most effective way to prevent contamination with undesirable substances from the high-pressure region.
  • a pressure in the third pressure range is lower than in the second pressure range, the third pressure range in particular having a connection to a disposal system, a flare and / or atmosphere. This is ensures that fluid that flows in the case of a leaking second valve from the second pressure range in the area between the first and second valve is discharged immediately via the third valve, in particular to the atmosphere and / or flaring or disposal. The fluid can thus not flow through a possibly leaking first valve in the first pressure range.
  • the third valve also acts as a vent valve.
  • the invention also relates to a use of the illustrated valve arrangement according to the invention for preventing an undesired backflow from a high-pressure region into a low-pressure region, in particular in the event of a malfunction.
  • a use of the illustrated valve arrangement according to the invention for preventing an undesired backflow from a high-pressure region into a low-pressure region, in particular in the event of a malfunction.
  • FIG. 1 schematically shown a system 100 for a liquid metering.
  • a refillable tank 110 serves as a supply for a liquid present as a liquid.
  • the liquid is passed to a pump 120, by means of which a corresponding pressure can be built up to forward the liquid to a distributor 160.
  • a check valve 130 and another metering and / or shut-off valve 150 are arranged.
  • the check valve separates the system 100 into a low-pressure region with the tank 110 and a high-pressure region with the distributor 160, via which the fluid is introduced in gaseous form into a process circuit.
  • high-pressure side or high-pressure region a part of the system 100 is designated, which is designed for high pressures. In normal operation, however, there is a slightly higher pressure on the low-pressure side or in the low-pressure region than on the high-pressure side, or at least part of the high-pressure side, since otherwise no transport of the fluid in the direction of the high-pressure side would be possible.
  • a branch is provided between the pump 120 and the check valve 130 in the low-pressure region, which leads via a shut-off valve 170 to a safety valve 140.
  • a safety valve 140 opens automatically with appropriate overpressure, the height the overpressure at which the safety valve 140 opens, can be adjusted and / or adjusted as a rule.
  • FIG. 2 schematically a valve assembly 200 according to the invention is shown in a preferred embodiment.
  • the valve arrangement 200 serves to connect a first pressure region p1 designed as a low-pressure region to a second pressure region p2 in the form of a high-pressure region in a fluid-pressurized system. Since the valve arrangement 200 connects two sides with different pressure ranges, the low-pressure region p1 is also referred to as the low-pressure side and the high-pressure region p2 is also referred to as the high-pressure side. It should be noted that usually referred to as high pressure side of a part of the system, which is designed for high pressures. In normal operation, however, there is a slightly higher pressure on the low-pressure side than on the high-pressure side, or at least part of the high-pressure side, since otherwise no transport of the fluid in the direction of the high-pressure side would be possible
  • the connection is made via a first valve 10 and a second valve 20 connected in series therewith.
  • a region p1 / 2 is formed between the first valve 10 and the second valve 20.
  • the first valve 10 is designed as a self-medium-controlled valve. It closes automatically as soon as the pressure which prevails in the high-pressure region p2, in this case also and in particular in the region p1 / 2, is at least as high as the pressure which prevails in the low-pressure region p1.
  • the first valve 10 is coupled to a switching device 40 designed as a solenoid valve.
  • This coupling can be, for example, electrical. In the case of a differently designed switching device 40, however, a different type of coupling may be more appropriate.
  • the solenoid valve 40 in turn is coupled to the second valve 20. This coupling is designed here such that the solenoid valve 40 open a connection of the second valve 20 with a compressed air reservoir 80 and can close. A valve drive of the second valve 20 is thus here by means of compressed air, ie operated pneumatically.
  • the second valve 20 can be closed by the solenoid valve 40 opens or disconnects the connection to the compressed air reservoir.
  • the area p1 / 2 has a branch to a third valve 30 which connects the area p1 / 2 with a third pressure area p3.
  • the third pressure range p3 has, for example, a connection to a flare system and thus approximately atmospheric pressure.
  • the third valve 30 is now coupled to the second valve 20 such that it is automatically opened as soon as the second valve 20 is closed.
  • This coupling can be done, for example, mechanically.
  • the third valve 30 does not require its own valve drive, but is controlled by the valve drive of the second valve 20, which in turn is operated by means of compressed air.
  • FIG. 3 schematically a valve arrangement 300 according to the invention is shown in a further preferred embodiment.
  • the valve arrangement 300 differs from the one in FIG. 2 shown valve assembly 200 only in that the second valve 20 is not directly coupled to the third valve 30, but indirectly via a switching device 40.
  • the third valve 30 is coupled to the switching device 40, for example.
  • the second valve 20 and the third valve 30 are respectively, in particular simultaneously, controlled by the switching device 40, that is, the second valve 20 is closed and the third valve 30 is opened.
  • valve assemblies 200 and 300 are the same irrespective of the precise driving of the second valve 20 and the third valve 30. Therefore, in the following description of the operation, no distinction is made between the two valve arrangements.
  • the fluid flows from the low-pressure region p1 to the high-pressure region p2, where there is, for example, a process is supplied.
  • the first valve 10 and the second valve 20 are opened, the third valve 30 is closed.
  • the pressure in the region p1 / 2 is at least as high as in the low-pressure region p1
  • the first valve 10 closes automatically.
  • the first valve 10 already closes when the pressure equals between the range p1 / 2 and the low pressure range p1 or only at one certain overpressure in the range p1 / 2, wherein pressure equality is to be preferred in particular with regard to possible contamination of the low-pressure region p1.
  • the closing of the first valve 10 is accompanied by a closing of the second valve 20, as described above. This is therefore a double shut-off between the low-pressure region p1 and the high-pressure region p2.
  • the third valve 30 Since an opening of the third valve 30 is accompanied simultaneously with the closing of the second valve 20, it is ensured that the pressure in the low-pressure region p1 is always greater than the pressure in the region p1 / 2. Pressure which would build up by a possible leaking second valve 20 in the area p1 / 2 by overflowing fluid from the high pressure area p2, is degraded immediately via the third valve 30, since the fluid is discharged, for example. For flaring and / or to the atmosphere. The third valve 30 thus has the effect of a vent valve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Lift Valve (AREA)

Claims (13)

  1. Agencement de soupapes (200, 300) pour un système sollicité par fluide, pour la connexion d'une première région de pression (p1) à une deuxième région de pression (p2) au moyen d'une première soupape (10) et d'une deuxième soupape (20) montée en série avec celle-ci,
    une troisième soupape (30) reliant une région (p1/2) entre la première soupape (10) et la deuxième soupape (20) à une troisième région de pression (p3) ;
    caractérisé en ce que
    la première soupape (10) est réalisée de manière à se fermer lorsqu'une pression qui s'applique du côté de la deuxième région de pression (p2), est au moins égale à une pression qui s'applique du côté de la première région de pression (p1) ;
    la première soupape (10) étant accouplée à la deuxième soupape (20) de telle sorte que la deuxième soupape (20) se ferme lorsque la première soupape (10) se ferme ;
    la deuxième soupape (20) étant accouplée à la troisième soupape (30) de telle sorte que la troisième soupape (30) s'ouvre lorsque la deuxième soupape (20) se ferme.
  2. Agencement de soupapes selon la revendication 1, dans lequel la première soupape (10) est accouplée à la deuxième soupape (20) par le biais d'un dispositif de commutation (40).
  3. Agencement de soupapes selon la revendication 2, dans lequel le dispositif de commutation (40) présente une soupape, en particulier une électrovanne.
  4. Agencement de soupapes selon la revendication 2 ou 3, dans lequel la première soupape (10) est accouplée mécaniquement, pneumatiquement ou hydrauliquement au dispositif de commutation (40).
  5. Agencement de soupapes selon l'une quelconque des revendications 2 à 4, dans lequel la deuxième soupape (20) est accouplée électriquement, hydrauliquement ou pneumatiquement au dispositif de commutation (40).
  6. Agencement de soupapes selon l'une quelconque des revendications précédentes, dans lequel la deuxième soupape (20) est accouplée mécaniquement, électriquement, hydrauliquement ou pneumatiquement à la troisième soupape (30).
  7. Agencement de soupapes selon l'une quelconque des revendications 1 à 5, dans lequel la troisième soupape (30) est accouplée électriquement, hydrauliquement ou pneumatiquement au dispositif de commutation (40).
  8. Agencement de soupapes selon l'une quelconque des revendications précédentes, dans lequel la première soupape (10) est disposée plus près de la première région de pression (p1) que la deuxième soupape (20).
  9. Agencement de soupapes selon l'une quelconque des revendications précédentes, dans lequel la première région de pression (p1) comprend une région basse pression.
  10. Agencement de soupapes selon l'une quelconque des revendications précédentes, dans lequel la deuxième région de pression (p2) comprend une région haute pression.
  11. Agencement de soupapes selon l'une quelconque des revendications précédentes, dans lequel une pression dans la troisième région de pression (p3) est inférieure à une pression dans la première région de pression (p1).
  12. Agencement de soupapes selon la revendication 10, dans lequel la troisième région de pression (p3) présente une connexion à un système de décharge, à un système de torche et/ou à l'atmosphère.
  13. Utilisation d'un agencement de soupapes (200) selon les revendications 9 et 10 pour empêcher un reflux indésirable hors de la région haute pression dans la région basse pression.
EP14001319.4A 2014-04-10 2014-04-10 Système de vannes Active EP2930407B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14001319.4A EP2930407B1 (fr) 2014-04-10 2014-04-10 Système de vannes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14001319.4A EP2930407B1 (fr) 2014-04-10 2014-04-10 Système de vannes

Publications (2)

Publication Number Publication Date
EP2930407A1 EP2930407A1 (fr) 2015-10-14
EP2930407B1 true EP2930407B1 (fr) 2017-01-25

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2412428A (en) 1943-12-24 1946-12-10 Pesco Products Co Unloading double check valve
EP0364108A1 (fr) 1988-09-19 1990-04-18 Keystone International Holdings Corp. Ensemble de transmission pour système à double fermeture et à décharge
EP0538213A1 (fr) 1991-09-13 1993-04-21 ITT INDUSTRIES, INC. (a Delaware corporation) Système de vanne à double obturation et aération
GB2300694A (en) 1995-04-27 1996-11-13 Brdr Christensens Haner A S A shut off valve device of the double block and bleed type
WO2009156304A1 (fr) 2008-06-25 2009-12-30 Basf Se Procédé permettant d’éviter en toute fiabilité un refoulement lors du transport d’un liquide

Family Cites Families (13)

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US4554942A (en) * 1983-09-06 1985-11-26 Advanced Micro Devices, Inc. Process gas controller
SE470365B (sv) * 1993-01-15 1994-01-31 Trelleborg Ind Ab Anordning för pneumatisk fyllning
JP2813856B2 (ja) * 1993-11-29 1998-10-22 日本エア・リキード株式会社 シリンダ付ガス供給装置
DE19818306C2 (de) * 1998-04-23 2000-04-27 Intega Hans J Jehl Gmbh Vorrichtung und Verfahren zur Druckwechselspülung
US5944043A (en) * 1998-08-17 1999-08-31 Advanced Micro Devices, Inc. Isolation and protection system for preventing a source of ultra-purified water from being contaminated with chemicals
US6345642B1 (en) * 1999-02-19 2002-02-12 Applied Materials, Inc. Method and apparatus for removing processing liquid from a processing liquid path
US6260568B1 (en) * 1999-10-06 2001-07-17 Taiwan Semiconductor Manufacturing Company, Ltd Apparatus and method for supplying uninterrupted gas
US6435860B1 (en) * 2000-04-28 2002-08-20 Lfg & E International Landfill condensate injection system
US20060151027A1 (en) * 2002-03-06 2006-07-13 Pearson Ronald W System for monitoring and operating valve manifolds and method therefore
US20060216663A1 (en) * 2005-03-25 2006-09-28 Morrissey James L Safe incineration of explosive air mixtures
US8267666B2 (en) * 2009-08-06 2012-09-18 Campbell Hausfeld/Scott Fetzer Company Air flow control apparatus
US8783027B2 (en) * 2009-09-18 2014-07-22 Siemens Energy, Inc. Pressure regulation circuit for turbine generators
DE102011012154A1 (de) * 2011-02-24 2012-08-30 Linde Ag Vorrichtung zur Druckreduzierung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2412428A (en) 1943-12-24 1946-12-10 Pesco Products Co Unloading double check valve
EP0364108A1 (fr) 1988-09-19 1990-04-18 Keystone International Holdings Corp. Ensemble de transmission pour système à double fermeture et à décharge
EP0538213A1 (fr) 1991-09-13 1993-04-21 ITT INDUSTRIES, INC. (a Delaware corporation) Système de vanne à double obturation et aération
GB2300694A (en) 1995-04-27 1996-11-13 Brdr Christensens Haner A S A shut off valve device of the double block and bleed type
WO2009156304A1 (fr) 2008-06-25 2009-12-30 Basf Se Procédé permettant d’éviter en toute fiabilité un refoulement lors du transport d’un liquide

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
AMERICAN INSTITUTE OF CHEMICAL ENGINEERS (AICHE): "Double Block and Bleed", PROCESS SAFETY BEACON, March 2012 (2012-03-01), pages 25, XP055432159, Retrieved from the Internet <URL:https://www.aiche.org/sites/default/files/cep/20120325.pdf>

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