WO2007128849A1 - Válvula, contenedor con válvula y el uso de la válvula - Google Patents
Válvula, contenedor con válvula y el uso de la válvula Download PDFInfo
- Publication number
- WO2007128849A1 WO2007128849A1 PCT/ES2007/000210 ES2007000210W WO2007128849A1 WO 2007128849 A1 WO2007128849 A1 WO 2007128849A1 ES 2007000210 W ES2007000210 W ES 2007000210W WO 2007128849 A1 WO2007128849 A1 WO 2007128849A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blocking element
- valve
- container
- valve according
- contact surface
- Prior art date
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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
- F16K17/19—Equalising valves predominantly for tanks
- F16K17/196—Equalising valves predominantly for tanks spring-loaded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
Definitions
- the invention encompasses in the field of valves and control systems of the pressure difference between the inside and outside of a container or the like.
- Spanish patent application No. 200300479 (publ. No. ES-2214146) refers to a system of balancing the forces acting on an airtight container during its sinking into a liquid (for example, in the case of the sinking of a vessel).
- the invention described in said document seeks to avoid the tensions generated in the container due to the increase of the liquid column on the outer face of the container, balancing the forces both in a possible sinking and in a possible refloating.
- the container incorporates one or several tubes that pass through the upper cover, at the ends of which are located check valves that only allow the passage of liquid in one direction.
- the external pressure on the container increases progressively, which causes the valves to open automatically allowing the entry of liquid into the container to balance the forces applied on the walls.
- the valves remain open causing an increase in the internal pressure until a balance with the external pressure is reached, at which time the valves are closed.
- Figures 1A-1C schematically reflect the procedure described in ES-2214146. Specifically, on the marine surface, an oil tanker 1001 is moved with an airtight container 1002 containing fuel 1003 and gas 1004. A tube 1005 communicates the interior of the container with the exterior, through the upper surface of the container.
- valve 1006 In the upper part of the tube a valve 1006 is installed, which, in Ia Figure 1A, is closed.
- Figure 1B reflects the same vessel during a first phase of its sinking.
- the valve 1006 is still closed, and the difference between the external pressure (exerted by seawater on the valve) and the internal pressure (basically, the gas in the container) is increasing as the ship continues to sink.
- the valve opens (figure 1 C) and seawater enters the container, so that the difference between the external pressure and the internal pressure is reduced.
- the valve 1006 closes again.
- valve can be opened in relation to an eventual refloating operation of the container, this to avoid problems caused by an excess of internal pressure in the container.
- This system makes it possible to avoid a difference in pressures in the walls of the container that could cause them to break, so that the risk of uncontrolled spills to the outside can be avoided or reduced.
- a first aspect of the invention relates to a valve configured to avoid excess pressure difference between the outside of a container and the inside of a container in which the valve is installed (for example, in the case of sinking of the container , for example, in the sea).
- the valve comprises: a first valve mechanism comprising a first locking element (for example, of the piston type), movable (for example, axially) between a closed position in which it prevents the passage of a fluid, and a position opening in which it allows the passage of a fluid, between the exterior and the interior, through a first part of the valve (for example, by side walls of a valve housing); Y a second valve mechanism comprising a second locking element movable between a closed position in which it prevents the passage of a fluid, and an opening position in which it allows the passage of a fluid, between the interior and the exterior, by a second part of the valve (for example, by a lower orifice in a "plunger" of which the first blocking element is part, by the inside of
- the first blocking element is associated with a first return element (for example, a spring or other elastic element) configured to exert a force on the first blocking element towards its closed position
- the second blocking element is associated with a second return element configured to exert a force on the second locking element towards its closed position.
- Each blocking element comprises a first contact surface configured to be in contact with the outside of the container and a second contact surface configured to be in contact with the inside of the container when the valve is mounted in the container, so that a fluid in contact with the respective contact surface exert a pressure force on said contact surface.
- the first valve mechanism is configured so that the first blocking element moves from its closed position to a position in which it allows the passage of the fluid, against the force exerted by the first return element, when the pressure on its First contact surface is X greater than the pressure on its second contact surface, with X being a predetermined value.
- the second valve mechanism is configured so that the second blocking element moves from its closed position to a position in which it allows the passage of the fluid, against the force exerted by the second return element, when the pressure on the second contact surface is Y greater than the pressure on its first surface of contact, Y being a default value.
- the X and Y values can be the same or different and can be established, for example, by the characteristics of the return elements selected by the user or manufacturer of the valve. In this way, there is a simple design valve that can operate autonomously and guarantee a balance in both directions between the internal pressure and the external pressure.
- Each of said first and second return element may comprise a spring or the like. These springs may be arranged coaxially with respect to each other. For example, the spring corresponding to the second return element may be located within the spring corresponding to the first return element.
- the first blocking element and the second blocking element can be arranged axially movable in a tubular housing.
- the first valve mechanism may be coaxially mounted with the second valve mechanism.
- the direction of movement of the first locking element in its displacement between its closing position and its opening position may be opposite to the direction of movement of the second blocking element in its displacement between its closing position and its opening position.
- the area of the first contact surface of the first blocking element may be substantially identical to the area of the second contact surface of the first blocking element, as regards the projection of said contact surfaces on the orthogonal plane to a direction of travel of the first blocking element.
- the same may apply to the second blocking element. This can be advantageous since it makes the valve work equally well independent of the depth at which it is located.
- the first contact surface and the second contact surface of the first blocking element can both be substantially circular (although they can also have other geometric configurations) and with substantially identical diameters, so that the advantage mentioned in the above is also achieved. The same applies to the second blocking element.
- the second blocking element may have an end part that penetrates through the second contact surface of the first blocking element (for example, through a hole that can be part of the fluid passage when the second blocking element is in its open position ) (in this way, the second element is subjected to the internal pressure of the container), and another extreme part can protrude through the first contact surface of the first blocking element (with which it is in contact with the outside and with the pressure there). In this way, the second blocking element is subjected to both the pressure on the outside and the pressure on the inside.
- the valve can additionally comprise tension pre-regulation means of the return elements, which allow to preset the force said return means exert on the corresponding blocking elements, in their respective blocking positions. These tension pre-regulation means can comprise respective threaded elements that are mounted axially movable, by rotation, on the valve.
- the return elements can be arranged in sealed chambers inside the valve, so that they are protected from fluids present outside the container and inside the container when the valve is mounted in the container. This reduces the risk of corrosion of these elements, important for the proper functioning of the valve.
- Some or each of these watertight chambers may have at least one wall provided with at least one weakening zone (for example, a rupture disk, or even a valve) to allow controlled breakage in the event of an excess difference of pressure between inside and outside of the corresponding waterproof chamber. In this way, the Chambers may be flooded by fluids that come from outside or inside, something that can have negative effects on the return elements in the long term, but which, contrary to an uncontrolled breakage, does not prevent the proper functioning of the valve in the short term.
- first blocking element When the first blocking element is located in its opening position, fluid can pass from the outside to the inside of the container through holes that can be located close to the first contact surface of the first blocking element.
- second blocking element When the second blocking element is in its opening position, fluid can pass from the outside to the inside of the container through holes that may be located close to the second contact surface of the first blocking element.
- the first blocking element may have, in correspondence with its first contact surface, a plurality of holes to allow the passage of a fluid from the inside of the container to the outside, when the valve is mounted in the container and when the second element Lock is in its opening position.
- these holes may be closed externally by the second locking element when it is in its closed position.
- the first blocking element may comprise a first head in which said holes are located, extending, from said head, a tubular body in which a longitudinal groove is defined.
- the second locking element can comprise a second head of a diameter greater than the distance between the most distant points of opposite holes of the first head, and from the second head an axially movable rod can be perpendicularly extended in the tubular body associated with the first head.
- the valve can comprise at least one central guide in which the tubular body associated with the first head is guided.
- the first return element can be found located between said central guide and the first head.
- the second return element can be located between the first head and the bolt.
- the valve may comprise a flange configured to, with the aid of fixing means, fix the valve to the mouth of the container.
- Another aspect of the invention relates to a container, for example, a container located in a ship, comprising at least one valve according to what has been described above.
- Another aspect of the invention relates to the use of a valve according to what is described above, in a container, for example, a container located on a ship, to avoid structural damage to the container by external or internal overpressure in the case of a sinking or refloating.
- valves can be modified to allow a discretionary opening, something that can be achieved by a simple additional mechanism (manual or motorized, and that can be controlled remotely).
- piloted valves that is, small valves to measure the pressure difference that govern
- the opening of the large valve that protects the tank This can be practical in the case of, for example, locking elements with diameters greater than 4 inches.
- Figures 1A-1 C show, schematically, the operation of the system described in ES-2214146.
- Figures 2-4 show a sectional and elevational view of a valve according to a first preferred embodiment of the invention.
- Figure 5 shows a perspective view and another exploded view (which better reflects some of the components illustrated in Figures 2-4) of the valve according to this embodiment of the invention.
- Figure 6 shows an exploded perspective view of the constituent elements of the valve according to a second possible embodiment of the invention.
- Figure 7 shows a sectional view of the valve of this second preferred embodiment, installed in the mouth of a tank for the situation in which there is a balance between the external pressure and the internal pressure of the tank.
- Figures 8 and 9 show similar views to those of Figure 7, but for the situation of the sinking of the tank and for the situation of the refloating, respectively.
- FIG. 2 reflects a possible embodiment of the invention, in which the valve is mounted on a fixing disk 9 for attachment to a container.
- This disk is connected, by bolts 8, bushing 81 and nuts 82, to a flange 7 of the tubular housing 3 of the valve.
- a first locking element 1 which, in the closed position illustrated in Figure 2, blocks step 6 so that prevents a fluid from passing from the outside (the upper part to the wall 9 in Figure 2) and the inside of the container (lower than the wall 9 in Figure 2).
- This first locking element 1 is being pushed towards its resting position (that is, upwards in Figure 2) by the spring 11, which rests on an internal partition 31 of the housing 3 of
- the valve, and on a nut 4, associated with the first blocking element 1 and which, when rotated, moves axially, so that the pressure that the spring 11 exerts on the locking element 1 in its closed or rest position can be preset.
- the blocking element 1 has a first contact surface 1A that is in contact with the outside, and a second contact surface 1 B that is in contact with the inside of the container. Both contact surfaces have the same diameters and dimensions (at least, in their projection on the plane orthogonal to the direction of axial displacement of the first blocking element), so that, if the internal pressure is equal to the external pressure, the External pressure exerts the same force on the first contact surface 1A as the internal pressure exerts on the second contact surface 1B, whereby the locking element 1 is maintained in its closed position.
- This equality of dimensions guarantees the correct functioning of the valve independent of the magnitudes of the external and internal pressures, that is, for example, independently of the depth in the sea at which the container is located.
- the difference in pressure between the exterior and the interior does not exceed a predetermined threshold, since, once the difference in pressure exceeds said threshold, the valve opens and allows a fluid to pass from the exterior to the interior, which serves to increase The pressure inside and reduce the mentioned difference in pressure.
- the first locking element 1 is provided with a series of joints toncas (in this specific case, with three seals) 14 that allows to establish tightness between the blocking element and the corresponding contact walls, in the container and / or in the tubular housing 3. In addition, they allow the chamber 12 in which Spring 11 is tight, something that reduces the risk of corrosion or other damage to the spring
- the valve comprises a second blocking element 2 coaxially mounted with the first blocking element 1 and inside the first blocking element, as can be seen in Figure 2.
- Three o-rings 24 allow the second element of blocking 2 moves axially within the first blocking element, maintaining the tightness.
- this second blocking element is observed in its closed position, in which it prevents a fluid from passing from inside the container, through holes 5 (see Figure 4) and 20, until reaching the outside by others holes 10 in the upper part of the first locking element 1.
- the second locking element 2 is being pushed towards its closed position (seen in figures 2 and 3) by a spring 21, arranged coaxially with the other spring 11.
- a spring 21 arranged coaxially with the other spring 11.
- One end of this spring 21 rests on a transversal partition of the second locking element 2, and another end of the spring rests on one end of a threaded element 25 (as a "nut") that is screwed into an internal tubular wall 15 of the first locking element 1.
- a threaded element 25 as a "nut”
- the force with which the spring pushes the second locking element towards its closed position can be preset by means of the threaded element 25.
- the spring 21 is in a sealed chamber 22.
- the second locking element has a first contact surface 2A that is in contact with the outside, and a second contact surface 2B that is in contact with the inside.
- the dimensions (or their projection in the orthogonal plane to the direction of axial movement) of both contact surfaces are substantially identical.
- the identity or similarity between the areas of the first and second contact surfaces (which has been schematically illustrated in Figure 2: the diameter D1A is equal to the diameter D1 B, and the diameter D2A is equal to the diameter D2B) make The difference in pressure is directly determinant for the force with which the corresponding blocking element is pushed in one direction or another, and guarantees the proper functioning of the system regardless of the depth at which the container is located.
- the tightness of the chambers 12 and 22 in which the respective supports are housed serves to prevent the supports from coming into contact with fluids that may jeopardize their integrity.
- Figure 5 reflects a perspective view of the valve and also an exploded view, which reflects the details of some of the components described above.
- the valve of the embodiment illustrated in Figures 6-9 is also applicable for coupling at the mouth 102 of a liquid tank 101 to favor the balance of pressures between the tank 101 and the exterior in, for example, sinking or refloating situations of the tank 101.
- the valve comprises: a tubular valve body 103, preferably cylindrical, which has a side wall that is introduced into the tank 101 in which a series of perforations 104 are carried out that give way to the liquid housed in the tank 101 towards the inside of the valve body 103 in the pressure equilibrium situation represented in Figure 7, a first blocking element 110 that is displaces axially adjusted inside the valve body 103 in a downward direction (in Figure 7) when the external pressure is greater than the pressure n inside the tank 101, in a sinking situation represented in Figure 8, communicating the perforations 104 of the valve body 103 with the fluid or liquid from the outside that penetrates through them towards the inside of the tank 101 until a balance of pressures is established, it being provided that this first blocking element 110 incorporates holes 106 that communicate the outside with the inside of the valve body 103, a first spring 107 which is compressed by the first blocking element 110 in its stroke descending, a second blocking element 114 which is located on the first blocking element 110 covering the holes 106 and which moves axially
- the first blocking element 110 consists of a first head in which the mentioned holes 106 are defined from which a tubular body 111 is perpendicularly extended in which a longitudinal groove is defined 112
- the valve body 103 has at least one central guide 113, as can be seen in Figures 6-9, in which the tubular body 111 of the first blocking element 110 is guided.
- the second blocking element 114 consists of a second head from which a rod 115 is extended perpendicularly that moves axially in the tubular body 111 of the first blocking element 110 and which has a transverse bolt 116 located perpendicularly with respect to the rod 115 which it moves axially on the longitudinal groove 112.
- the first spring 107 is located between the central guide 113 and the head of the first locking element 110 and the second spring 109 is located between the same head of the first locking element 110 and bolt 116.
- valve body 103 may be topped on a flange 117 which allows the valve body to be fixed around the mouth 102 of the tank 101 by corresponding fixing means, such as screws 118.
- Figure 6 shows the pressure balancing situation
- Figure 7 shows the sinking situation in which the pressure of the external liquid pushes the first blocking element 110 downwards until the perforations 104 of the body of the valve 103 for giving way to the liquid that is directed from the outside towards the inside of the tank 101.
- the head of the second blocking element 114 is resting on the head of the first blocking element 110 covering the holes 106, whereby the diameter of the head of the second blocking element 114 will be greater than the distance between the most distant points of opposite holes 106.
- the first spring 107 appears compressed in the situation of Figure 8, becoming the regulating element that determines the position of the first blocking element as a function of the external and internal pressures.
- Figure 9 shows the situation of refloating, in which the internal pressure is higher than the external pressure, which causes the displacement of the second blocking element 114 in the situation in which the first blocking element is in position. of closing. This displacement causes the release of the holes 106 and therefore the liquid exit from the tank 101 outwards.
- the second spring 109 is compressed, which will become the regulating element that directs the second element to its initial position once the pressure balance has been recovered.
- the invention is not limited to the specific embodiments that have been described but also covers, for example, the variants that can be made by the average expert in the field (for example, in terms of the choice of materials, dimensions , components, configuration, etc.), within what follows from the claims.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Safety Valves (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Pens And Brushes (AREA)
- External Artificial Organs (AREA)
- Table Devices Or Equipment (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009508398A JP2009536298A (ja) | 2006-05-09 | 2007-04-11 | バルブ、バルブを有する容器およびバルブの使用方法 |
US12/300,294 US20100006570A1 (en) | 2006-05-09 | 2007-04-11 | Valve, container with valve and use of the valve |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200601182A ES2285935B1 (es) | 2003-02-27 | 2006-05-09 | Mejoras introducidas en la patente de invencion 200300479 por "sistema de equilibrado de las fuerzas que actuan sobre un contenedor hermetico durante su hundimiento en un liquido". |
ESP200601182 | 2006-05-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007128849A1 true WO2007128849A1 (es) | 2007-11-15 |
Family
ID=38328444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2007/000210 WO2007128849A1 (es) | 2006-05-09 | 2007-04-11 | Válvula, contenedor con válvula y el uso de la válvula |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100006570A1 (es) |
EP (1) | EP1855037B1 (es) |
JP (1) | JP2009536298A (es) |
KR (1) | KR20090007440A (es) |
AT (1) | ATE462912T1 (es) |
DE (1) | DE602007005535D1 (es) |
WO (1) | WO2007128849A1 (es) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102203487A (zh) * | 2008-09-02 | 2011-09-28 | 艾默生过程管理调节技术公司 | 用于阀的流体流动控制部件 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2459683A (en) * | 2008-04-30 | 2009-11-04 | Toby Jonathan Priestly | Swelling polymer filled bag actuator |
GB0820039D0 (en) * | 2008-11-03 | 2008-12-10 | Priestly Toby J | Improvements in valves |
US20140326346A1 (en) * | 2011-12-07 | 2014-11-06 | Parker-Hannifin Corporation | Coupling |
WO2013119194A1 (en) * | 2012-02-06 | 2013-08-15 | Halliburton Energy Services, Inc. | Pump-through fluid loss control device |
CN113479506A (zh) * | 2021-07-16 | 2021-10-08 | 山西新华防化装备研究院有限公司 | 一种密封包装箱用呼吸阀 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868921A (en) * | 1972-06-14 | 1975-03-04 | Bowman Jon G | Normally vented liquid-storage tank for ships, with closure device for automatically preventing leaking if the ship should sink |
GB2036931A (en) * | 1978-11-10 | 1980-07-02 | Jong G De | Combined pressurising and venting valve |
GB2063425A (en) * | 1979-11-13 | 1981-06-03 | Mcevoy Oilfield Equipment Co | Fail-safe non-pressure locking gate valve |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1285733A (en) * | 1969-09-29 | 1972-08-16 | Lohtellier Ets | Improvements in automatic pressure equilibrating valves |
US5282492A (en) * | 1993-02-23 | 1994-02-01 | The United States Of America As Represented By The Secretary Of The Navy | Dual valve plate two-way pressure relief valve |
DE4408357A1 (de) * | 1994-03-14 | 1995-09-21 | Ralf Dr Ing Teichmann | Sicherheitsventil zum Sichern von Behältern gegen Über- oder Unterdruck |
US7086388B2 (en) * | 2003-08-04 | 2006-08-08 | Delphi Technologies, Inc. | Combination valve for fuel system |
-
2007
- 2007-04-11 EP EP07380094A patent/EP1855037B1/en not_active Not-in-force
- 2007-04-11 DE DE602007005535T patent/DE602007005535D1/de active Active
- 2007-04-11 KR KR1020087027856A patent/KR20090007440A/ko not_active Application Discontinuation
- 2007-04-11 AT AT07380094T patent/ATE462912T1/de not_active IP Right Cessation
- 2007-04-11 JP JP2009508398A patent/JP2009536298A/ja active Pending
- 2007-04-11 WO PCT/ES2007/000210 patent/WO2007128849A1/es active Application Filing
- 2007-04-11 US US12/300,294 patent/US20100006570A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868921A (en) * | 1972-06-14 | 1975-03-04 | Bowman Jon G | Normally vented liquid-storage tank for ships, with closure device for automatically preventing leaking if the ship should sink |
GB2036931A (en) * | 1978-11-10 | 1980-07-02 | Jong G De | Combined pressurising and venting valve |
GB2063425A (en) * | 1979-11-13 | 1981-06-03 | Mcevoy Oilfield Equipment Co | Fail-safe non-pressure locking gate valve |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102203487A (zh) * | 2008-09-02 | 2011-09-28 | 艾默生过程管理调节技术公司 | 用于阀的流体流动控制部件 |
Also Published As
Publication number | Publication date |
---|---|
KR20090007440A (ko) | 2009-01-16 |
JP2009536298A (ja) | 2009-10-08 |
EP1855037B1 (en) | 2010-03-31 |
US20100006570A1 (en) | 2010-01-14 |
DE602007005535D1 (de) | 2010-05-12 |
ATE462912T1 (de) | 2010-04-15 |
EP1855037A1 (en) | 2007-11-14 |
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