• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Valve device comprising a housing with a passage and a closing body for closing the passage in the housing, the closing body being movable between an open position and a closed position; wherein the sealing body and the bushing have such a shape that at least a part of the sealing body deforms plastically during the movement from the open to the closed position or upon reaching the closed position.
    公开号:BE1021418B1
    申请号:E2012/0742
    申请日:2012-10-29
    公开日:2015-11-19
    发明作者:Gelder Paul Alfons Leon Van；Peter Jozef Regina Maria Macken
    申请人:Stuvex International Nv；
    IPC主号:
    专利说明:

    Valve arrangement and method for preventing explosion propagation
    The present invention relates to a valve device and to a method for closing a pipe, and in particular to a valve device and to a method for avoiding explosion propagation in pipes or for limiting the effects of explosion propagation in pipes.
    In existing systems with pipes connected to volumes where there is a risk of explosion, either mechanical valves or chemical valves are used. Mechanical valves are usually valves that close a passage very quickly, which limits or avoids the effects of explosion propagation in pipes. Such mechanical valves can take various forms, and the most well-known types are slide valves (guillotine valves), hinged valves (for example designed as a non-return valve), and rotary valves such as butterfly valves and ball valves. Usually, the acceleration of the closing body of the valve device to the closed position poses no major problem. However, stopping or delaying the closure body in time without damaging the surrounding structure is a more difficult task. To date, this problem has been addressed by either using complex braking mechanisms (based on a hydraulic or pneumatic braking action and / or based on energy-absorbing materials that are installed in the housing) or by arranging the shut-off body so that the energy is absorbed elastically, such as with hinged valves. Such solutions have the disadvantage that they result in the valve thundering or that complicated locking structures are required.
    Embodiments of the present invention have the object of overcoming these disadvantages by providing a valve device and method that are simple and yet allow the valve body of the valve device to reliably reach the closed position, i.e. the valve body being reliably braked.
    To this end, an embodiment of a valve device according to the invention comprises a housing and a closing body for closing a passage in the housing, the closing body being movable between an open position and a closed position. The closing body and the lead-through have a shape such that at least a part of the closing body plastically deforms during the movement from the open position to the closed position or upon reaching the closed position.
    According to the invention, the closing body is thus constructed in such a way that the movement from the open position to the closed position causes a plastic deformation of the closing body, whereby the valve is braked in time, and the kinetic and / or potential energy of the closing body is used for the plastic deformation. of the closing body, such that this closing body springs back at least from the closed position after reaching this position. Existing braking mechanisms are always based on keeping the closing body intact, or in other words, on the closing body being reusable. Embodiments of the invention leave the idea of the known braking mechanisms and ensure that the closing body is suitably deformed plastically, such that the closing body quickly comes to a stop in the closed position, or becomes stuck in the bushing.
    The closing body can be made from one piece or from several pieces attached to each other. The closing body can be made from both metal and plastic.
    According to an advantageous embodiment, at least one peripheral part of the closing body is adapted to be plastically deformed. To this end, this peripheral part can for instance be of a weakened design, for instance by making this peripheral part thinner or by providing holes therein. The peripheral part can be an integral part of the closing body, or can be attached as a separate piece, for example welded, to the rest of the closing body. The closing body can, for example, be shaped such that a peripheral part thereof is bent or compressed upon reaching the closed position. The bent or compressed peripheral part is herein pressed against a wall of the bushing. For example, in the not yet deformed state, the closing body can have dimensions that are larger than the dimensions of the bushing. For the situation in which the bushing has a substantially round cross-section with a first diameter, the closing body can for instance have a substantially round shape with a second diameter which is at least locally larger than the first diameter. The person skilled in the art understands that many other shapes are conceivable within the scope of the invention, wherein the shape of the closing body is selected in function of the shape of the bushing in such a way that the closing body plastically deforms during the movement from the open to the closed position or upon reaching the closed position.
    According to an advantageous embodiment, the closing body is removably mounted in the housing, for example with the aid of one or more bolts. In this way the sealing body, after having been plastically deformed, can be easily removed from the housing, and a new sealing body can be mounted in the housing.
    According to an advantageous embodiment, the valve device further comprises an actuator for moving the closing body from the open position to the closed position. The actuator is, for example, a cylinder-piston assembly with a piston which engages the closing body. The actuator is preferably such that the closing body can reach the closed position from the open position in less than one second, and more preferably in less than 100 ms.
    The valve device can be designed, for example, as a valve with a closing body which is bent around an axis; a valve with a rotating valve body such as a butterfly valve or a globe valve; a valve with hinged closure body, such as a fall valve; a gate valve (guillotine valve); a non-return valve (for example with a fall valve or a ball). In the case of a butterfly valve (or throttle valve), the shut-off body is formed by a disc that rotates about its centerline. By turning over a certain angle, the butterfly valve therefore goes from open to closed, whereby the butterfly valve is plastically deformed. In the case of a ball valve or ball valve, the closing body is formed by a pierced sphere that rotates about its axis, the sphere for example not being a perfect sphere such that a part of the sphere deforms plastically when moving to the closed position.
    The valve device may further comprise a control for operating the actuator for moving the closing body to the closed position and / or for operating the injection means for injecting the flame-extinguishing substance. In the case that the device comprises an injection means, the control advantageously ensures that the flame-retardant is injected in a timely manner and sufficiently long to reliably prevent explosion propagation. Preferably, the flame-retardant substance will continue to be injected as long as a risk of explosion propagation remains.
    According to a possible embodiment, the valve device further comprises a reservoir for a flame-extinguishing substance; and an injection means adapted to inject the flame-retardant into the passage for preventing explosion propagation as a result of an incomplete closure by the closure body. The mechanical closure by the closing body does not have to be perfect in such an embodiment. By appropriately injecting a flame-retardant substance, a gap or opening can be quickly and efficiently absorbed or compensated for as a result of a non-perfect closure by the closing body. Note that this gap or opening may, for example, be the result of irregular plastic deformation.
    The location of the injection means is preferably such that the flame-retardant makes contact with the closing body at the latest when the closing position is reached.
    The injection means preferably comprises an actuator, such as, for example, a gas generator, a single shot actuator (a metron actuator), etc. According to a variant, the injection means comprises a gas under pressure, such as a CO2 gas bottle. In the case that an inert gas is used, this can also serve for the inertization. In addition, the injection means typically comprises one or more manifolds, injection nozzles, and the like. It is noted that the actuator of the injection means can also act as an actuator for moving the closing body from the open position to the closed position. According to an alternative, two individual actuators are provided.
    According to an advantageous embodiment, the injection means is adapted to inject the flame-retardant substance such that the injection contributes to the movement of the closing body from the open position to the closed position. For example, with a butterfly valve, the flame-retardant can be injected in the direction of the movement of the closing body from the open to the closed position. Thus, the flame-retardant substance has a dual function.
    The flame-retardant can be, for example, one of the following substances or a combination thereof: an inert gas such as N 2 or a noble gas, CO 2, extinguishing powder, water, halogen.
    The housing can be provided with one or more injection channels through which the flame-retardant can be injected. Typically, at least one flame-extinguishing substance injection channel is provided on the side of the bushing intended to be connected to a space in which there is a risk of explosion. However, it is also possible to provide one or more injection channels on both sides of the closing body. According to a possible embodiment, the closing body itself can also be provided with injection channels through which the flame-extinguishing substance can be injected. The distance between an injection channel and the closing body in the closed position is preferably smaller than five times the largest dimension, seen in cross-section, of the bushing, that is, in the case of a round bushing, smaller than five times the diameter of the bushing. transit.
    It is noted that in some cases an explosion may originate from both sides of the transit. A device according to the invention can be used both for a situation in which the explosion hazard comes from one side and for the situation in which the explosion comes from two sides.
    In certain cases, a gap will be present between the sealing body and the housing, and the injection means can be adapted to inject the flame-retardant material to prevent explosion propagation as a result of a non-completely sealed seal by the sealing body.
    According to a possible embodiment, the valve device further comprises detection means for detecting an explosion, which detection means are connected to a control for controlling the movement of the closing body from the open position to the closed position and / or for controlling the injection of the flame-retardant substance.
    Embodiments of the invention further relate to a method for closing a bushing. The feed-through is closed by moving a closing body from an open to a closed position, the closing body being plastically deformed during this movement or upon reaching the closed position by reducing the kinetic and / or potential energy of the closing body. The closing body is herein preferably mounted in a housing in which the passage is provided. The closing body can for instance be hinged, bendable, rotatable or slidably mounted in the housing, and is for instance an integrally manufactured part, for instance from metal.
    According to an advantageous embodiment of the method, at least one peripheral part of the closing body is bent or compressed upon reaching the closed position. In this way the movement of the closing body is braked in a simple and efficient manner.
    According to a possible embodiment, the method further comprises injecting a flame-extinguishing substance into the passage for preventing explosion propagation as a result of an incomplete closure by the closing body.
    Advantageous embodiments of the valve device and method are described in the claims. In addition, the method is preferably applied using an embodiment of a valve device as described above.
    The invention will be further elucidated on the basis of a number of by no means limiting exemplary embodiments of the device and method according to the invention with reference to the attached drawings, in which:
    Figures 1A and 1B show respectively a schematic section of a first embodiment of a valve device according to the invention in the open position and in the closed position; Figure IC is a schematic detail view of the closure body;
    Figure 2 schematically shows a cross-section of a second embodiment of a valve device according to the invention and in the open position; and
    Figure 3 schematically shows a perspective view of a third embodiment of a valve device according to the invention in the open position.
    Figures 1A, 1B and IC illustrate an embodiment of a valve device according to the invention in the form of a non-return valve. The valve device comprises a housing 1 in which a passage 3 extends. A closing body 2 is mounted in the housing 1 via bolts 8 for closing the feed-through 3. The closing body 2 is movable between an open position (Figure 1A) and a closed position (Figure 1B). To this end, an actuator is provided which takes the form of a piston-cylinder assembly 7. The closing body 2 can be bent over an axis A and is provided with a fixing part 2a for fixing the closing body 2 in the housing via one or more bolts 8. As can best be seen in figure IC, the lead-through 3 in the illustrated embodiment has a substantially round shape with a dimension R1 that is smaller than the corresponding dimension R2 of the closing body 2. By attaching such a shape to the closing body 2 It is ensured that the closing body is plastically deformed during the movement of the closing body 2 from the open position to the closed position. Optionally, a peripheral part 9 can be made weakened, for instance by making this part wholly or partly thinner or by providing recesses therein. In the illustrated embodiment, the peripheral part 9 of the closing body 2 will be bent. As a result of this plastic deformation, part of the energy of the closing body 2 is absorbed, in particular the kinetic energy, whereby the closing body is braked.
    The person skilled in the art understands that the closing body 2 can also be hingedly mounted in the housing, the fixing part 2a then being omitted. The person skilled in the art furthermore understands that the bushing can have any shape, the shape of the closing body being adapted to the shape of the bushing. The shape of the closing body and of the bushing here will be such that at least a part of the closing body is plastically deformed during the movement from the open to the closed position or upon reaching the closed position. Since the sealing body in the illustrated embodiment is permanently plastically deformed, it is advantageous to mount the sealing body such that it can be easily removed from the housing and can be replaced by a new sealing body.
    It is possible that the plastic deformation results in openings between the closing body 2 and the housing 1, whereby explosion propagation is still possible. Such an explosion propagation can be further limited or eliminated by providing a chemical barrier in addition to the mechanical barrier. In the illustrated embodiment, the valve device comprises a reservoir 4 for a flame-extinguishing substance and an injection means 5 in the form of a valve for passage of the flame-extinguishing substance in the passage 3 of the housing 1. The flame-extinguishing substance preferably becomes timely and sufficiently long injected for reliably preventing or limiting explosion propagation. The flame-retardant substance 6 extends over the entire bushing 3 and thus prevents an explosion E from propagating through any gaps that are present between the sealing body 2 and the wall of the bushing 3, see figure 1B.
    The advantages of such an embodiment include: - a very simple construction; - relatively small dimensions, and therefore a lower weight; - a smaller air resistance and therefore a smaller pressure drop over the valve in comparison with hinged mounted valves (non-return valves) and most types of butterfly valves of the prior art.
    Figure 2 illustrates a second embodiment of a valve device according to the invention. The valve device here takes the form of a guillotine valve with a housing 11 in which a closing body 12 can be moved, see the arrow P. The bottom side of the closing body 12 is designed such that it can be plastically deformed. This can be achieved, for example, by making a lower strip of the closing body 12 thinner, or by providing openings therein. In this way the lower strip 19 of the closing body 12 can deform upon reaching the closed position and thus absorb the kinetic energy of the closing body 12, so that the closing body 12 will spring back to a minimum. The person skilled in the art understands that this type of valve device can further be provided with a chemical barrier as was illustrated with reference to the first embodiment of figures 1A-1C.
    Figure 3 illustrates a third embodiment of a valve device in the form of a butterfly valve. The valve device comprises a housing 21 with a passage 23 and a closing body 22 for closing the passage 23. The dimensions of the passage 23 and the closing body 22 are such that the closing body will deform plastically during the movement from the open position to the closed position . To that end, the radius R2 of the closure body can be greater than or equal to the radius R1 of the bushing. Note that the radius R2 of the closure body will typically be variable, but at least locally greater than the radius R1 of the bushing. Again, in such an embodiment, a chemical barrier may also be provided as described for the first embodiment of Figures 1A-1C.
    The invention is not limited to the exemplary embodiments described above, and the person skilled in the art will understand that many modifications and variants are conceivable within the scope of the invention which is only determined by the following claims.
    权利要求:
    Claims (23)
    [1]
    Conclusions
    A valve device comprising a housing (1) with a lead-through and a closing body (2) for closing the lead-in in the housing, wherein the closing body is movable between an open position and a closed position; characterized in that the closing body and the bushing have a shape such that at least a part of the closing body plastically deforms during the movement from the open to the closed position or upon reaching the closed position.
    [2]
    Valve device according to claim 1, characterized in that at least one peripheral part of the closing body is adapted to be plastically deformed.
    [3]
    Valve device according to one of the preceding claims, characterized in that the closing body is shaped such that a peripheral part thereof is bent or compressed when the closing position is reached.
    [4]
    Valve device according to one of the preceding claims, characterized in that at least one peripheral part of the closing body is made weakened in comparison with a central part of the closing body.
    [5]
    Valve device according to one of the preceding claims, characterized in that, in the not yet deformed state, the closing body has dimensions that are larger than the dimensions of the bushing.
    [6]
    Valve device according to any one of the preceding claims, characterized in that the passage has a substantially round cross-section with a first radius and that the closing body has a substantially round shape with a second radius which extends over at least a part of the circumference of the closing body is larger than the first diameter.
    [7]
    Valve device according to one of the preceding claims, characterized in that the closing body is mounted in the housing for pivoting, rotatable, displaceable, or bendable rotation around an axis.
    [8]
    Valve device according to one of the preceding claims, characterized in that the closing body is removably mounted in the housing.
    [9]
    9. Valve device according to one of the preceding claims, further comprising an actuator for moving the closing body from the open position to the closed position.
    [10]
    Valve device according to one of the preceding claims, characterized in that the actuator comprises a piston, which piston is mounted to press the closing body into the bushing.
    [11]
    Valve device according to one of the preceding claims, characterized in that the valve device further comprises: - a reservoir for a flame-extinguishing substance; - an injection means adapted for injecting the flame-extinguishing substance into the passage for preventing explosion propagation as a result of an incomplete closure by the closing body.
    [12]
    The valve device according to claim 11, further comprising a control for operating the actuator for moving the closing body to the closed position and for operating the injection means for injecting the flame-extinguishing substance.
    [13]
    Valve device according to one of claims 11 to 12, characterized in that the flame-retardant is one of the following substances or a combination thereof: an inert gas such as N2 or a noble gas, CO2, extinguishing powder, water, halogen.
    [14]
    A valve device according to any one of claims 11-13, characterized in that the housing is provided with one or more injection channels through which the flame-retardant can be injected.
    [15]
    Valve device according to any one of claims 11-14, characterized in that at least one injection channel for the flame-extinguishing substance is provided on the side of the passage which is intended to be connected to a space in which there is a risk of explosion.
    [16]
    A valve device according to any one of the preceding claims, characterized in that detection means are provided for detecting an explosion, which detection means are connected to a control for activating the movement of the closing body from the open position to the closing position.
    [17]
    17. Method for closing a feed-through, comprising closing the feed-through by moving a closing body from an open to a closed position, wherein the closing body is plastically deformed during this movement or upon reaching the closed position to reduce the kinetic and / or potential energy of the occluding body.
    [18]
    A method according to claim 17, characterized in that at least one peripheral part of the closing body is bent over when the closing position is reached.
    [19]
    A method according to claim 17 or 18, characterized in that a flame-retardant substance is injected into the passage for preventing explosion propagation as a result of an incomplete closure by the closing body.
    [20]
    A method according to claim 19, characterized in that the flame-retardant substance is injected in such a way that the injection contributes to the movement of the closing body from the open position to the closed position.
    [21]
    A method according to claim 19 or 20, characterized in that the flame-retardant is one of the following or a combination thereof: an inert gas such as N 2 or a noble gas, CO 2, extinguishing powder, water, halogen.
    [22]
    A method according to any one of claims 19-21, characterized in that the flame-retardant substance is injected on the side of the passage that is connected to a space in which there is a risk of explosion.
    [23]
    A method according to any one of claims 17-22, characterized in that the closing body is removed from the housing after reaching the closed position and is replaced by a new closing body.
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    同族专利:
    公开号 | 公开日
    BE1020865A5|2014-06-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO1987003210A1|1985-11-29|1987-06-04|Firefly Ab|A device for preventing the risk of fire due to burning or glowing particles in a pipeline|
    US5402603A|1992-01-03|1995-04-04|Henley; Robert L.|Flapper plate detonation flame arrester|
    GB2318975A|1996-05-01|1998-05-13|Nullifire Ltd|Fire resistant duct|
    FR2697435B1|1992-10-29|1994-12-16|France Air|Thermal retarder for ventilation device intended for fire protection.|
    DE19701678A1|1997-01-18|1998-07-23|Stauber & Partner Beratende In|Fire and smoke barrier for especially ventilation duct in building|
    US6112823A|1999-11-09|2000-09-05|O'leary; James|Waste fire suppression control device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    BE201200559A|BE1020865A5|2012-08-27|2012-08-27|VALVE DEVICE AND METHOD FOR PREVENTING EXPLOSION PRODUCTION.|
    BE2012/0559|2012-08-27|PCT/BE2013/000045| WO2014032127A2|2012-08-27|2013-08-26|Valve device and method for preventing explosion propagation|
    PCT/BE2013/000042| WO2014032125A2|2012-08-27|2013-08-26|Valve device and method for preventing explosion propagation|
    EP13783222.6A| EP2888015B1|2012-08-27|2013-08-26|Valve device and method for preventing explosion propagation|
    AU2013308341A| AU2013308341B2|2012-08-27|2013-08-26|Valve device and method for preventing explosion propagation|
    AU2013308339A| AU2013308339B2|2012-08-27|2013-08-26|Valve device and method for preventing explosion propagation|
    US14/423,606| US9452303B2|2012-08-27|2013-08-26|Valve device and method for preventing explosion propagation|
    EP13782643.4A| EP2888014B1|2012-08-27|2013-08-26|Valve device and method for preventing explosion propagation|
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