ES2327020B1 - SEAT SEAT FOR CRIOGENIC BUTTERFLY VALVES. - Google Patents
SEAT SEAT FOR CRIOGENIC BUTTERFLY VALVES. Download PDFInfo
- Publication number
- ES2327020B1 ES2327020B1 ES200801137A ES200801137A ES2327020B1 ES 2327020 B1 ES2327020 B1 ES 2327020B1 ES 200801137 A ES200801137 A ES 200801137A ES 200801137 A ES200801137 A ES 200801137A ES 2327020 B1 ES2327020 B1 ES 2327020B1
- Authority
- ES
- Spain
- Prior art keywords
- ring
- seat
- toroidal
- fold
- closing
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
- F16K1/2265—Shaping or arrangements of the sealing the sealing being arranged on the valve seat with a channel- or U-shaped seal covering a central body portion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
- F16K1/2266—Shaping or arrangements of the sealing the sealing being arranged on the valve seat and being forced into sealing contact with the valve member by a spring or a spring-like member
Abstract
Asiento de cierre para válvulas de mariposa criogénicas, formado por un conjunto accesorio que se dispone en el contorno de la abertura de paso a través del cuerpo (1) de la válvula, para el apoyo del disco móvil (2) mediante el que se establece el cierre, comprendiendo dicho conjunto accesorio un anillo metálico (5) que determina un pliegue toroidal (5.1) con un muelle (6) en el interior, presentando un frente (10) para apoyo del disco de cierre (2) en contacto de metal con metal, mientras que a un lado del pliegue toroidal (5.1) se dispone un anillo (9) de PTFE (politetrafluoretileno) que presenta un frente (11) de contacto blando para apoyo a su vez del disco de cierre (2).Closing seat for butterfly valves cryogenic, consisting of an accessory set that is arranged in the contour of the passage opening through the body (1) of the valve, for the support of the mobile disk (2) by means of which establishes the closure, said accessory assembly comprising a metal ring (5) that determines a toroidal fold (5.1) with a spring (6) inside, presenting a front (10) for support of the closing disc (2) in metal-to-metal contact, while that on one side of the toroidal fold (5.1) a ring (9) is arranged PTFE (polytetrafluoroethylene) presenting a front (11) of Soft contact to support the closing disc (2).
Description
Asiento de cierre para válvulas de mariposa criogénicas.Closing seat for butterfly valves cryogenic
La presente invención está relacionada con las válvulas denominadas de mariposa, y en particular con las válvulas de este tipo que tienen que trabajar con altas presiones y a temperaturas variables, proponiendo un asiento de cierre que permite cumplir con las exigencias de obturación de dichas válvulas tanto a temperatura ambiente como en temperaturas especialmente bajas, manteniendo además unas buenas condiciones de seguridad frente al fuego.The present invention is related to so-called butterfly valves, and in particular with the valves of this type that have to work with high pressures and to variable temperatures, proposing a closing seat that allows to meet the sealing requirements of said valves both at room temperature and at temperatures especially low, while maintaining good safety conditions in front of the fire
Las válvulas de mariposa que se utilizan en las conducciones de fluidos constan de un disco giratorio sobre un eje diametral, mediante el que se establece el cierre sobre un asiento anular alrededor del conducto de paso que define la válvula.The butterfly valves used in fluid conduits consist of a rotating disk on an axis diametral, by which the closure is established on a seat ring around the passage duct that defines the valve.
En las aplicaciones de presiones elevadas dichas válvulas se constituyen con un disco y un cuerpo metálicos, entre los que se determina el asiento de cierre, lo cual da lugar a que las dilataciones y contracciones que ocasionan las variaciones de temperatura provoquen fácilmente fugas en el cierre por alteración del ajuste en el asiento entre el disco de cierre y el cuerpo de la válvula.In high pressure applications said valves are constituted with a metal disk and body, between which determines the closing seat, which results in the dilations and contractions that cause variations in temperature easily cause leakage in the closure due to alteration of the adjustment in the seat between the closing disc and the body of the valve.
Para solucionar ese problema se han desarrollado soluciones de disposición de juntas elásticas en el asiento del cierre de las válvulas, con lo cual el comportamiento es bueno en los márgenes de la temperatura ambiente, pero en las aplicaciones de temperaturas muy bajas (hasta por ejemplo -196ºC), las juntas elásticas sufren un endurecimiento que las hace perder su efectividad en el cierre de las válvulas.To solve that problem they have developed elastic joint arrangement solutions in the seat of the valve closure, whereby the behavior is good at room temperature ranges, but in applications of very low temperatures (up to -196 ° C), the joints elastic suffer a hardening that makes them lose their effectiveness in closing the valves.
De acuerdo con la invención se propone un asiento de cierre de aplicación para las mencionadas válvulas de mariposa, con el cual se logran unas características funcionales ventajosas tanto en los niveles de la temperatura ambiente como en las temperaturas notablemente bajas.According to the invention, a application closing seat for the aforementioned valves butterfly, with which functional characteristics are achieved advantageous both in ambient temperature levels and in remarkably low temperatures.
Este asiento de cierre objeto de la invención consta de un conjunto componente que determina un asiento doble en el contacto de apoyo del disco de cierre, de manera que un asiento establece un apoyo blando que asegura la efectividad del cierre a temperatura ambiente, mientras que el otro asiento establece un apoyo de contacto metal con metal que asegura la efectividad del cierre en las temperaturas muy bajas.This closing seat object of the invention it consists of a component set that determines a double seat in the contact support of the closing disc, so that a seat establishes a soft support that ensures the effectiveness of the closure to room temperature, while the other seat establishes a metal-to-metal contact support that ensures the effectiveness of the Close at very low temperatures.
Dicho asiento de cierre se compone de un anillo de chapa metálica de un material blando, como cobre o níquel, que determina en la parte interior un plegado en forma de toroide, dentro del cual se aloja un muelle cubierto por una camisa metálica que reparte la fuerza de dicho muelle sobre la pared del toroide, confiriendo a éste elasticidad de adaptación.Said closing seat is composed of a ring of sheet metal of a soft material, such as copper or nickel, which it determines in the inner part a folding in the form of a toroid, inside which a spring covered by a metal jacket is housed which distributes the force of said spring on the wall of the toroid, conferring on this elasticity of adaptation.
Sobre el toroide se dispone además un anillo de compresión autocentrador, el cual ejerce una acción de retención radial del toroide por el exterior, en tanto que paralelamente al toroide se dispone un anillo de PTFE (politetrafluoretileno), el cual queda a su vez retenido radialmente por el anillo de compresión.On the toroid there is also a ring of self-centering compression, which exerts a retention action radial toroid on the outside, while parallel to the toroid a PTFE (polytetrafluoroethylene) ring is disposed, the which is in turn held radially by the ring of compression.
Se obtiene así un asiento de cierre que mediante el anillo de PTFE y mediante el toroide del anillo metálico determina sendos frentes de contacto para el apoyo del disco móvil de la válvula de aplicación, de forma que el anillo de PTFE actúa como una junta que asegura la perfecta estanqueidad del cierre en el rango de la temperatura ambiente, mientras que el toroide del anillo metálico actúa como elemento de estanqueidad a temperaturas muy bajas, proporcionando el muelle del interior del toroide la elasticidad necesaria para compensar las diferencias de presión y las irregularidades del disco de cierre.A closing seat is thus obtained that by the PTFE ring and through the metal ring toroid determine two contact fronts for mobile disk support of the application valve, so that the PTFE ring acts as a joint that ensures the perfect seal of the closure in the ambient temperature range, while the toroid of the metal ring acts as a sealing element at temperatures very low, providing the spring inside the toroid the elasticity necessary to compensate for pressure differences and irregularities of the closing disc.
Además, el asiento metálico que determina el toroide garantiza la seguridad en caso de fuego o incendio en la conducción de aplicación de la válvula a la que pertenece el cierre.In addition, the metallic seat that determines the toroid guarantees safety in case of fire or fire in the application line of the valve to which the closing.
Por todo ello, este asiento de cierre objeto de la invención resulta de unas características ciertamente ventajosas, adquiriendo vida propia y carácter preferente para las válvulas de mariposa que tienen que trabajar en rangos de temperatura ambiente y en rangos de temperaturas muy bajas.For all this, this closing seat object of the invention results in certain characteristics certainly advantageous, acquiring own life and preferential character for butterfly valves that have to work in ranges of room temperature and in very low temperature ranges.
La figura 1 muestra una vista frontal de una válvula de mariposa en la que es aplicable el asiento de cierre de la invención.Figure 1 shows a front view of a butterfly valve on which the closing seat of the invention.
La figura 2 es una perspectiva con corte parcial de una válvula de mariposa provista con el asiento de cierre de la invención, en posición abierta.Figure 2 is a partial cut perspective of a butterfly valve provided with the closing seat of the invention, in open position.
La figura 3 es una perspectiva con corte parcial de la misma válvula anterior, en posición cerrada.Figure 3 is a partial cut perspective of the same previous valve, in closed position.
La figura 4 es un detalle ampliado de la zona IV indicada en la figura 3.Figure 4 is an enlarged detail of zone IV indicated in figure 3.
La figura 5 es una vista correspondiente a la sección V-V indicada en la figura 1.Figure 5 is a view corresponding to the V-V section indicated in figure 1.
La figura 6 es un detalle ampliado de la zona VI indicada en la figura 5.Figure 6 is an enlarged detail of zone VI indicated in figure 5.
El objeto de la invención se refiere a un asiento de cierre para las válvulas de mariposa destinadas a conducciones de fluidos de alta presión y que han de trabajar en condiciones de temperatura ambiente o a temperaturas muy bajas.The object of the invention relates to a closing seat for butterfly valves intended for high pressure fluid lines and that have to work in ambient temperature conditions or at very low temperatures.
Las válvulas de este tipo comprenden un cuerpo (1) metálico que determina una abertura circular de paso y un disco (2) también metálico que es susceptible de ser girado mediante un eje (3) entre sendas posiciones perpendiculares, en una de las cuales queda abierto el paso a través de la abertura definida por el cuerpo (1), mientras que en la otra posición dicho disco (2) hace apoyo en el contorno de la mencionada abertura estableciendo el cierre de la misma.Valves of this type comprise a body (1) metallic that determines a circular passage opening and a disc (2) also metallic that is capable of being rotated by an axis (3) between each perpendicular positions, in a of which the passage through the opening is open defined by the body (1), while in the other position said disk (2) supports the contour of said opening establishing the closure of it.
De acuerdo con la invención, en el contorno de la abertura del cuerpo (1) se dispone un conjunto accesorio (4), mediante el cual se constituye el asiento de apoyo para establecer el cierre de la abertura de paso mediante el disco móvil (2).According to the invention, in the contour of the body opening (1) an accessory assembly (4) is arranged, through which the support seat is established to establish the closing of the passage opening by means of the mobile disk (2).
Dicho conjunto accesorio (4) determinante del asiento de cierre consta de un anillo (5) de chapa metálica de un material blando, como cobre o níquel, determinado dicho anillo en la parte interior un pliegue (5.1) en forma toroidal, en el cual se aloja un muelle tensado (6) adaptado a la forma interior de dicho pliegue toroidal (5.1), sobre el cual reparte el esfuerzo mediante una camisa metálica (7).Said accessory set (4) determining the closing seat consists of a metal sheet ring (5) of a soft material, such as copper or nickel, determined said ring in the inner part a fold (5.1) in toroidal form, in which houses a tensioned spring (6) adapted to the interior shape of said toroidal fold (5.1), over which the effort is distributed by a metal shirt (7).
Por la parte exterior del pliegue toroidal (5.1) se dispone un anillo de compresión (8), el cual determina una retención por fuera que mantiene la posición circunferencial del mencionado pliegue toroidal (5.1), impidiendo el aumento radial del mismo hacia fuera.On the outside of the toroidal fold (5.1) a compression ring (8) is arranged, which determines a retention on the outside that maintains the circumferential position of the mentioned toroidal fold (5.1), preventing the radial increase of the same out.
Al lado del anillo de compresión (8) se dispone además un anillo (9) de PTFE (politetrafluoretileno), el cual determina un borde frontal paralelo a la parte frontal del pliegue toroidal (5.1) hacia el interior del anillo (5), quedando dicho anillo (9) retenido a su vez por la parte posterior por el anillo de compresión (8).Next to the compression ring (8) is arranged also a ring (9) of PTFE (polytetrafluoroethylene), which determines a front edge parallel to the front part of the fold toroidal (5.1) towards the inside of the ring (5), being said ring (9) retained in turn from the back by the ring compression (8).
De esta forma, el conjunto accesorio (4) determina un asiento con dos zonas de contacto (10) y (11) para el apoyo del disco móvil (2), como se observa en las figuras 4 y 6, de modo que el pliegue toroidal (5.1) determina una zona de contacto (10) en la que el disco (2) apoya en contacto de metal con metal, permitiendo asegurar un cierre óptimo a temperaturas muy bajas, mientras que el anillo (9) de PTFE determina una zona (11) de contacto blando, sobre la que el disco (2) cierra perfectamente en el rango de la temperatura ambiente. El asiento de la zona (10), establece asimismo una seguridad contra el fuego, en caso de incendio en la conducción de aplicación de la válvula, debido a la naturaleza metálica de las dos partes de contacto en dicha zona (10).In this way, the accessory set (4) determines a seat with two contact zones (10) and (11) for the mobile disk support (2), as seen in figures 4 and 6, of so that the toroidal fold (5.1) determines a contact zone (10) in which the disk (2) rests on metal-to-metal contact, allowing to ensure optimal closure at very low temperatures, while the PTFE ring (9) determines an area (11) of soft contact, on which the disc (2) closes perfectly in The ambient temperature range. The zone seat (10), also establishes a fire safety, in case of fire in the valve application line, due to the metallic nature of the two contact parts in said zone (10)
En ambos casos la presión del contacto sobre el disco (2) en las mencionadas zonas (10) y (11) se mantiene con la fuerza necesaria para establecer el cierre, debido a la retención que establece el anillo de compresión (8) por la parte posterior del pliegue toroidal (5.1) y del anillo (9) de PTFE.In both cases the contact pressure on the disk (2) in the mentioned zones (10) and (11) is maintained with the force necessary to establish closure due to retention which sets the compression ring (8) at the back the toroidal fold (5.1) and the PTFE ring (9).
Además, debido a la fuerza del muelle (6), el pliegue toroidal (5.1) ofrece la elasticidad necesaria para compensar las diferencias de presión y las irregularidades de forma del disco (2), mientras que la plasticidad del material del anillo (5), permite la perfecta adaptación del pliegue toroidal (5.1) a la superficie de contacto de dicho disco (2).In addition, due to the force of the spring (6), the toroidal fold (5.1) offers the elasticity necessary for compensate for pressure differences and irregularities of shape of the disc (2), while the plasticity of the ring material (5), allows the perfect adaptation of the toroidal fold (5.1) to the contact surface of said disk (2).
En la disposición del montaje del anillo (5) sobre el cuerpo (1) de la válvula, se disponen unas juntas de grafito (12), mediante las que se asegura la estanqueidad de dicho montaje.In the ring mounting arrangement (5) on the body (1) of the valve, gaskets are arranged graphite (12), whereby the tightness of said seal is ensured mounting.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200801137A ES2327020B1 (en) | 2008-04-21 | 2008-04-21 | SEAT SEAT FOR CRIOGENIC BUTTERFLY VALVES. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200801137A ES2327020B1 (en) | 2008-04-21 | 2008-04-21 | SEAT SEAT FOR CRIOGENIC BUTTERFLY VALVES. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2327020A1 ES2327020A1 (en) | 2009-10-22 |
| ES2327020B1 true ES2327020B1 (en) | 2010-05-21 |
Family
ID=41165247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200801137A Active ES2327020B1 (en) | 2008-04-21 | 2008-04-21 | SEAT SEAT FOR CRIOGENIC BUTTERFLY VALVES. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2327020B1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3127182A (en) * | 1964-03-31 | Thermally actuated sealing means | ||
| US3642248A (en) * | 1969-05-07 | 1972-02-15 | Allen & Co Fof Proprietary Fun | Sealing mechanism |
| US4306706A (en) * | 1979-09-11 | 1981-12-22 | Posi-Seal International, Inc. | Cryogenic valve seal |
| FR2686136B1 (en) * | 1992-01-15 | 1995-06-30 | Alsthom Velan | METALLIC JOINT VALVE, ESPECIALLY BUTTERFLY VALVE. |
-
2008
- 2008-04-21 ES ES200801137A patent/ES2327020B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| ES2327020A1 (en) | 2009-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2403081T3 (en) | Metal seal for ball valves and ball valve comprising said seal | |
| BRPI0821719A8 (en) | valve | |
| ES2211132T3 (en) | INDEXED BOARD FOR PRESSURE COOKER AND PRESSURE COOKER EQUIPPED WITH THIS BOARD. | |
| US3661171A (en) | Butterfly valve | |
| CA2797942A1 (en) | Sleeve seal assembly and rotary valve having sleeve seal assembly | |
| WO2018122435A1 (en) | Ball valve with cryogenic seat | |
| BR112013000955A2 (en) | lid for a container | |
| ES2327020B1 (en) | SEAT SEAT FOR CRIOGENIC BUTTERFLY VALVES. | |
| US8607815B2 (en) | Butterfly valves with undulating sealing surface | |
| US3414233A (en) | Ball valve | |
| AR118210A1 (en) | PRESSURE REDUCING VALVE | |
| US4201239A (en) | Sealing device for a valve | |
| KR100599410B1 (en) | Pressurized metal seated butterfly valve | |
| ES2352077T3 (en) | SPHERICAL COUPLING THAT INCLUDES A SEALED CONTACT AREA. | |
| ES2549277B1 (en) | Closing seat for a ball valve | |
| JP2016138609A5 (en) | ||
| BRPI0805749B8 (en) | improvement in trocar sealing | |
| ES2868676T3 (en) | Valve | |
| WO2001001022A1 (en) | Superelastic seal for liquid natural gas processing plants | |
| ES2818547T3 (en) | Plug with upper trunnion plug | |
| ES1067757U (en) | Bidirectional closure seat for butterfly valves (Machine-translation by Google Translate, not legally binding) | |
| BR112020001436B1 (en) | VALVE | |
| WO2020211799A1 (en) | Rubber sleeve for pneumatic cut-off device and pneumatic cut-off device | |
| BR112022007050A2 (en) | SEGMENTED VALVE WITH RIDGE SEAL | |
| CN209725290U (en) | A kind of double containment valve seat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EC2A | Search report published |
Date of ref document: 20091022 Kind code of ref document: A1 |
|
| FG2A | Definitive protection |
Ref document number: 2327020B1 Country of ref document: ES |