Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
• • 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
  • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
  • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
  • B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
  • B01J8/002—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor with a moving instrument
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
  • B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
  • B01J8/003—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor in a downward flow
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
  • B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
  • B65G69/16—Preventing pulverisation, deformation, breakage, or other mechanical damage to the goods or materials
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
  • B01J2208/00743—Feeding or discharging of solids
  • B01J2208/00752—Feeding
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
  • B01J2208/00743—Feeding or discharging of solids
  • B01J2208/00769—Details of feeding or discharging
  • B01J2208/00778—Kinetic energy reducing devices in the flow channel
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T137/00—Fluid handling
  • Y10T137/8376—Combined

Definitions

• the invention relates to a lightweight device for loading solid particles into an enclosure, particularly in a large enclosure whose height can reach several tens of meters.
• the device according to the invention is more particularly applicable to the loading of fixed catalyst bed reactors, of chemical, petroleum or petrochemical type, with solid particles in the divided state which can be in the form of beads, grains, cylinders, pellets, sticks or any other form, but which are relatively small.
• These solid particles are more specifically chemically inert beads used in chemical reactors, molecular sieves, or catalyst grains used in chemical or hydrocarbon reaction reactions such as reforming, cracking, hydrocarbon desulfurization or more generally, hydro-treatments of petroleum cuts.
• Such particles are most often in the form of beads, extrudates or multilobe elements whose dimensions vary according to the case, from a few tenths of millimeters to a few centimeters.
• the Applicant has proposed in its patent application FR-A1-2 829 107, a semi-rigid sleeve sinuous or helical in which the particles roll down on the inside of the sleeve, the speed of descent (and therefore the energy kinetics at the end of the race) that can be adjusted by the inclination of the slope of the sleeve.
• this device is bulky because of its sinuous or helical shape and the relative rigidity of the material constituting the sleeve, which makes it difficult to transport and its installation and disassembly through the through holes ("manholes"). In the reactor.
• the Applicant has proposed a rigid sleeve formed of several unitary elements fixed to each other by threaded rod assemblies / nuts arranged outside the unitary elements.
• Each unitary element is equipped with two diametrically opposed fixing flanges, each intended for the attachment and / or guiding of at least one chain or a fixing cable necessary for maintaining the sleeve inside the enclosure.
• This rigid sleeve comprises at least one pipe for introducing the particles into the reactor in which is moved by means of a cable a movable element for controlling the falling speed of these particles.
• This movable element has a conical or cylindrical shape with a height of between one to five times the internal diameter of the pipe, and is equipped with a seal on its periphery to prevent the passage of particles between its periphery and the inner wall of the pipe. .
• this sleeve has the disadvantage of being particularly heavy and cumbersome because of the rigid material used to form each unit element, so that it is difficult to transport it for use in remote reactors any of other or in industrial sites far from its center management and maintenance.
• it is sometimes difficult to perfectly align the different unit elements during their assembly which causes a shift in the alignment of the inner pipe sections of two adjacent unit elements causing the blocking of the mobile element flowing in this assembly. conduct.
• the rigid sleeve described in FR-A1-2 901 778 can not be flattened, curved or deformed .
• the object of the present application is to propose a device for loading solid particles into a chamber, which is of reduced weight, which can be easily mounted, disassembled and transported, and which causes only a very limited attrition of the solid particles when those these are conveyed in said enclosure by means of said loading device according to the invention.
• the subject of the invention concerns a device for loading solid particles into an enclosure, in particular a chemical or petrochemical reactor, comprising at least one pipe intended for the circulation of solid particles and at least one mobile control element. the falling speed of the particles adapted to be slidably displaced within said pipe, characterized in that said device comprises a plurality of identical guide plates interconnected by fixing means and in that said at least one pipe is made of a flexible material, each guide plate having at least one through hole for receiving and guiding said at least one pipe in a position in which the longitudinal axis of the pipe extends substantially perpendicular to the plane of each plate of guide.
• the device according to the invention thus has a very light framework, most of the weight of which is due to the guiding plates, the total area of which is substantially reduced compared to a device such as that described in Application FR-A1-2. 901,778.
• the fixing means are shaped so that the guide plates are spaced apart from each other along the longitudinal axis of the pipe, or so that groups of two guide plates adjacent to each other are spaced from each other along the longitudinal axis of the pipe.
• the guide plates will advantageously be interconnected by reversible fixing means. It is then very easy to disassemble the device by gradually detaching each guide plate from the adjacent plate, the guide plates can be stored easily because of their small size.
• the device remains compact, especially when the conduits are independent of the guide plates: the latter can then be stacked on each other while being connected to each other, after extraction of the pipe or pipes.
• Each flexible pipe may be made of any material having sufficient mechanical strength to withstand a tear during the loading process. It may be for example a textile material, preferably knitted or woven, or a plastic sheet, optionally reinforced with fibers or a textile material.
• flexible pipe is meant a pipe that can be easily bent without being broken or damaged. In the present invention, it may be not only a pipe capable of flattening completely when empty, but also a semi-rigid pipe, reinforced by rigid annular elements, placed at regular intervals and which allow a curvature of the sleeve but prevent the flattening thereof.
• the flexible pipe used in the present invention can be flattened, bent or deformed unlike the rigid sleeve described in FR-A1-2 901 778.
• the flexible pipes will advantageously be of circular section, as well as the corresponding guide holes of the plates.
• the guide plates comprise a generally oblong shape whose smallest dimension is slightly greater than the diameter of the largest pipe, so as to limit the overall size of the device according to the invention.
• the guide plates according to the invention are rigid material elements, flat and not very thick, in other words, their thickness is their smallest dimension, namely, their thickness (defined as the dimension in a perpendicular direction). at the plate plane) is less than their length or width
• the thickness of the plates will be determined according to the material constituting the plate, it will be especially sufficient to prevent any deformation of the plate when the device according to the invention is in use.
• the thickness of each guide plate may represent from 0.1% to 10% of the distance separating two adjacent guide plates, or separating two groups each formed of two assembled guide plates. to the other, from 0.2 to 8.5%, or from 0.4 to 1.5%.
• This distance separating two adjacent guide plates, or separating two groups each formed of two guide plates assembled to one another, will for example be 1m to 1.2m. This distance is defined in the position of use of the device and is measured along the longitudinal axis of the pipe.
• each guide plate may be, for example, from 0.2 cm to 10 cm, preferably from 0.5 cm to 1.5 cm.
• the plates will for example be made of metal or plastic having the required strength.
• the use position of the device according to the invention defines the position in which it is used to charge an enclosure, the pipe or pipes of the device extending substantially vertically.
• the flexible pipe or lines are formed of segments connected to each other by fastening means and junction. These flexible driving segments may for example be joined by collars joining flanges provided at the ends of each of the flexible pipe segments.
• the device according to the invention comprises a plurality of modules, each module comprising an upper guide plate and a lower guide plate connected to each other, each module comprising reversible attachment means to another module. so that when two modules are assembled, their upper and lower guide plates are superimposed and in face-to-face contact.
• This arrangement allows particularly easy disassembly of the device according to the invention and facilitates its handling and its assembly in another place.
• each pipe is formed of a plurality of segments
• each guide plate of a module is provided with means for fixing a segment end and each module comprises at least a pipe segment whose ends are secured to the guide plates of said module.
• the lower and upper guide plates of a module are thus separated by a distance corresponding to the length of the pipe segment, in the use position of the device.
• the reversible fixing means will for example be arranged to ensure the assembly of the adjacent module guide plates.
• the alignment of the modules of the device according to the invention is easier than for the devices of the prior art because the guide plates are lighter so that it is easier to manipulate them to arrange them against each other. other so that they are perfectly superimposed, thus ensuring the alignment of the pipes.
• it is also easier to manufacture plates of identical dimensions with a low manufacturing tolerance, unlike the modules of the prior art which have relatively complex volume shapes, which can be difficult to manufacture with low tolerances.
• the (the) conduit (s) may be formed of segments connected to each other by fastening means and junction and the guide plates connected two by two in modules, the (the) conduct (s) being independent of the guide plates.
• the guide plates will advantageously be provided with a sealing element designed to seal at least one pipe between two adjacent modules.
• this sealing element may comprise a metal frame whose upper and lower faces are each provided with a seal, said sealing element being interposed between two guide plates of two adjacent modules. This arrangement prevents the seal can be sucked into the pipe when it is under vacuum.
• the guide plates of the same module will be interconnected by means of at least two cable sections. These cable sections will for example be connected to opposite ends of a guide plate.
• it may be flexible cables, the guide plates being then kept at a distance from each other under the effect of gravity when the device is in the use position.
• These flexible cables can be fixed irreversibly, for example by welding or any other suitable technique, or reversibly fixed, for example by carabiner or other suitable device.
• the device may also be rigid cables, for example bars or tubes screwed onto each guide plate.
• at least two cables connect all the guide plates of the device to each other. These cables then extend over the entire height of the device through the guide plates, the latter being kept at a distance from each other for example by locking means of each plate on the cables. These cables can then be used as device handling cables, allowing the device to be lowered or mounted inside an enclosure.
• the device according to the invention may also comprise at least two handling cables whose one end is connected to a guide plate in the lower position of the device in its position of use and whose other end is shaped to be connected. to a hoist winch.
• handling cables can be fixed on the lowest module, preferably on the upper plate of the latter, although a fixation on the lower guide plate, or on the two plates of the module, is possible. In the absence of a module, the ends of the handling cables can be fixed on the bottom end guide plate of the device.
• the device according to the invention may comprise at least two flexible material ducts: at least one duct for the circulation of the solid particles and at least one duct that can be maintained in a vacuum to allow suction of the dust present in the duct. pregnant.
• These dusts are most often essentially dust partially covering the solid particles before loading, and circulated during the movements of said solid particles, for example during their loading into the chamber. It can also be breaks in these solid particles, possibly caused during loading.
• each guide plate may comprise at least one recess designed to receive and guide one or more identical or different longitudinal elements selected from a cable for supplying liquid, gaseous or electrical fluid, or a cable for transporting a tool .
• the edge of these recesses does not have a closed, but open shape through which the longitudinal elements can be introduced. This opening will advantageously be smaller in size than the inside of the recess in order to prevent the longitudinal elements from coming out of the recess during handling of the device according to the invention, and in particular during loading.
• each guide plate is provided with a guiding means for the movable element circulating inside the pipe.
• This guide means may be located inside the pipe or outside the pipe.
• the guide means will be outside the pipe.
• the guiding means may indifferently be inside or outside.
• frustoconical surface disposed on one face of a guide plate, possibly on both sides.
• This frustoconical surface will advantageously be disposed over the entire periphery of the guide orifice of the pipe in which the movable element slides.
• the upper end of the pipe concerned has a flared shape.
• the pipe or pipes of the device according to the invention being flexible, their inner diameter may not be strictly circular over the entire height of the device.
• joints may be present between each module: it may then happen that their alignment is not perfect with the pipe. Due to these characteristics, a movable element formed of a compact block made of hard material can become stuck inside the device according to the invention, thus causing losses of time, or not to ensure its role and pass particles if its perimeter no longer marries the inner wall of a deformed pipe.
• the Applicant proposes a movable element made of a flexible material and which, when not stressed, has dimensions greater than those of the section of the pipe receiving it, said movable element being shaped to deform and adopt a bowl shape when it is inside the pipe so that its free edges hug the inner walls of the pipe.
• Bowl-shaped means a hollow shape whose concavity is oriented towards the top of the loading device according to the invention, when the latter is in the use position.
• the resulting hollow form does not have orifices so that the particles situated above can not pass through it.
• Such a movable element can thus adapt to any variations in the internal diameter of the pipe in which it circulates or to the possible defects of circularity of this pipe, without risk of being locked inside, while avoiding a risk of falling particles under the moving element.
• the movable element comprises at least one disc of flexible material whose edge is provided with notches, the diameter of the disc being greater than the internal diameter of the pipe receiving the movable element, the center of each disk being equipped with a support means.
• the ratio of the diameter of a disk of the movable element to the internal diameter of the pipe will for example be from 1.1 to 2, preferably from 1.1 to 1.5, for example 1.2.
• the material used to make the movable element may be a flexible or semi-rigid material, for example of elastomer type, possibly reinforced.
• the indentations will preferably be made so that the edges of the notches are contiguous when the movable element is disposed inside the pipe, the device being in the use position. These indentations will preferably be regularly distributed on the periphery of a disc and / or identical.
• the notches made on the edge of the disk are for example recessed areas whose top is distinct from the center of the disc. The apex of the recessed areas will for example be located at a distance from the center of 0.4 to 0.6 times the value of the radius of the disk, for example at a distance of 0.5 times the value of the radius of the disk.
• each hollow sector is formed of two angles ⁇ and ⁇ .
• the angle a is located within the sector and is smaller than the angle ⁇ , for example a is 0.4 to 0.6, preferably 0.5.
• the angle ⁇ is located outside the sector and ranges from 10 ° to 40 °, preferably from 25 ° to 35 °, for example 30 °. This angle ⁇ starts at a distance of 0.6 to 0.8 times the value of the radius of the disk, for example 0.7 times the value of the radius of the disk.
• the support means may be a rod, and several disks may be distributed along the rod in at least one stage.
• Each stage may comprise only one disc, but will advantageously be formed of at least two or at least three flexible disks superimposed and arranged against each other.
• the distance between two stages may be from 1 to 2 times the internal diameter of the pipe receiving the movable element, preferably from 1, 2 to 1, 8, for example of 1, 5 times the internal diameter.
• the support rod of the movable element is a threaded rod, for adjusting the distance between each stage.
• the discs will be secured to the rod by holding means.
• These holding means are for example washers located on either side of a disk or of several superimposed disks, and held in position on the stem, for example by pins or by bolts screwed on the stem when the latter is threaded, or any other suitable holding means.
• These washers preferably have dimensions chosen so as not to cover the indentations of the discs.
• the configuration of the mobile element used can thus easily be adapted as needed, and the various elements can be easily replaced in case of deterioration, unlike the movable elements of the prior art.
• This element is therefore particularly simple and easy to achieve, and inexpensive, while perfectly marrying the inner wall of a pipe, whatever the defects of circularity thereof.
• the movable member may comprise a plurality of disks arranged in staggered rows.
• the mobile element may have the following arrangements (the last configuration being preferred):
• the movable element may also be equipped with a gripping means on its lower face, thus allowing it to be extracted from the pipe by the lower end thereof when the device is in the position of use.
• It can be a simple ring to hang a hook or carabiner.
• Figure 1 is a side view of a portion of the device according to one embodiment of the invention
• Figure 2 is a top view of a guide plate used in one embodiment of the device according to the invention
• Figure 3 is a schematic representation of a movable element of the device according to the invention in a particular configuration
• Figure 4 is a top view of a disk of a movable member of the device according to the invention.
• FIG. 1 represents a module 10 of a preferred embodiment of a device for loading solid particles into an enclosure according to the invention.
• the device according to the invention has the advantage of being lightened compared to the device described in the document FR 2 901 778 A1.
• the module is shown in the position of use of the loading device, wherein the longitudinal axis of the pipes extends substantially vertically, and perpendicularly to the plane of each guide plate.
• the device comprises a plurality of modules 10.
• Each module 10 comprises an upper guide plate 12a and a lower guide plate 12b interconnected.
• Each module 10 further comprises reversible fixing means 14 to another adjacent module 10 so that, when two modules are assembled, their upper and lower guide plates are superimposed and in face-to-face contact, as can be seen in FIG. 1.
• FIG. 1 In this Figure 1, are shown in broken lines the elements of the adjacent modules located above and below the module 10 (drawn in solid lines).
• the reversible fixing means 14 of two guide plates are arranged at the ends of the plates, most often at the opposite ends.
• the reversible fixing means 14 are screw nut assemblies.
• the upper guide plates 12a and 12b of the module shown are connected by two cable sections 16, each located at one end of the guide plates.
• the module 10 shown also comprises a segment 18 of a first flexible pipe, for example intended for the descent of particles inside an enclosure, and a segment 20 of a second flexible pipe, for example intended to suck the dust present in the enclosure during loading.
• the guide plates, and in particular the lower guide plate 12b of a module is equipped with a guiding means 22 for the mobile element flowing slidably inside the pipe, in other words, the mobile element moves by translation along the longitudinal axis of the pipe.
• this guide means 22 is a flared frustoconical surface disposed on one face of the lower guide plate 12b, on the edge, or near the edge, of the guide orifice of the duct formed in the plate. guidance. In general, this guide means 22 may be located inside or outside the pipe or pipe segment.
• a sealing element (not shown) is interposed between the assembled guide plates of two adjacent modules to ensure the sealing of each pipe between two adjacent modules.
• This may be for example a rubber seal or any other suitable material.
• FIG. 2 is a top view of an exemplary embodiment of a guide plate 12a.
• the guide plate 12a has a generally oblong shape, the smallest dimension is slightly greater than the diameter of the largest pipe (pipe 18 in the example).
• This guide plate 12a has two through holes 28 and 30 for receiving and guiding the pipes 18 and 20 respectively.
• the largest orifice 28 receives the particle loading line 18, and is advantageously disposed substantially in the center of the plate.
• the orifice 30, of smaller diameter, receives the suction pipe 20 and is located between the orifice 28 and one end of the plate 12a.
• the pipe segments 18 and 20 may be affixed to the plate by any suitable means.
• a clamp could be used to clamp each end of a segment to a corresponding sleeve of the guide plate (not shown), this sleeve being formed by a cylindrical rim of the orifice receiving the pipe.
• This sleeve is thus found inside the flexible pipe. Its free edge can then be advantageously flared to form the guide means 22 described above.
• a recess 32 designed to receive and guide one or more identical or different longitudinal elements chosen from a supply cable for liquid, gaseous or electrical fluid, or a transport cable.
• tooling for example a lamp or a filling control device, or any other device usually used.
• this recess 32 has an open form of any shape as shown in Figure 2, which allows the introduction of the longitudinal elements.
• orifices 34 are provided at opposite ends of the guide plate 12a for the passage of the fastening means 14 of two adjacent plates 12a, 12b.
• modules will be added by the upper end of the device to gradually increase the height of the latter to reach the bottom of the enclosure.
• the modules When raising the device out of the enclosure, the modules will also be detached by the upper end of the device.
• the raising / lowering of the device according to the invention can in particular be ensured by handling cables, generally two, the ends of which are connected on the one hand to a guide plate of the lower end of the device in its position of use. and on the other hand to a lifting winch.
• the guide plates can be added progressively also from the top of the device as the latter descends to the device. inside the enclosure, or disassembled (also from above) during the ascent of the device. In the latter case, it may be necessary to cut the flexible pipes during the ascent of the device.
• Flexible conduits formed of segments connected to each other by suitable fastening and joining means known in the art.
• Flexible pipe segments may for example be joined by collars joining flanges provided at the ends of each of the flexible pipe segments. Each segment can then be easily mounted / detached during the descent / ascent of the device.
• the latter also comprises a mobile control element designed to be slidably displaced inside a pipe of the device.
• this movable element is made of a flexible material, the shape and the material of the element being chosen on the one hand so that it has, when not constrained, dimensions larger than those of the section of the pipe receiving it, and on the other hand so that it can deform and adopt a bowl shape when it is forced (by insertion inside a pipe), so as to marry the internal walls of the pipe.
• FIG. 3 represents an exemplary embodiment of such a mobile element 40.
• the movable member 40 shown comprises a rod 42 forming a support means, on which are mounted a plurality of discs 44 of flexible material, for example of elastomeric type, possibly reinforced.
• the movable element comprises 6 disks 44 distributed in two stages of 3 disks each. At each stage, the discs are placed against each other and held in position by means of two washers 45 threaded on the rod and fixed on both sides of the discs. These washers may be held in position for example by pins passing through the rod, or by nuts if the rod is threaded, or by any other appropriate means.
• the movable element represented also comprises a ring 46 forming a gripping means, this ring being secured to the lower end of the rod 42 on its lower face, thus enabling it to be extracted from the pipe by the lower end of it when the device is in the use position.
• Each disk 44 has a diameter greater than the internal diameter of the pipe receiving the movable element.
• each disk when the movable member 44 is out of the pipe, each disk is substantially horizontal (upper stage of Figure 3).
• the disks When introducing the element into a pipe, the disks will deform into a bowl, as visible for the lower disk stage of FIG. 3, and thus retain the particles because the edges of the disks follow the internal wall of the pipe.
• FIG. 4 represents, seen from above, an exemplary embodiment of a disk 44.
• the disk 44 has a diameter of 1.5 times the internal diameter of the pipe for which it is intended.
• the center of the disc 44 is perforated for the passage of the rod 42.
• This disk 44 has notches 48 made so that the edges of the notches are contiguous when the movable member is deformed because of its introduction into the conduit.
• the indentations 48 are recessed areas whose top S, distinct from the center of the disc, is located at a distance of half a radius thereof.
• Each hollow sector is formed of two angles a and ⁇ .
• the angle a is located inside the sector and the angle ⁇ outside the sector. In the example, the angle a is equal to half the angle ⁇ , this angle ⁇ starting at a distance of 0.7 times the value of the radius R of the disk.
• edges of two successive indentations 48 form an angle ⁇ of 45 ° in the example shown. It will be understood that this angle Y corresponds to 360 ° / the number of strips, a strap 50 being defined as the material situated between two indentations 48. In the example, the disc comprises 8 strips 50.
• the dimensions of the washers 45 used to hold are chosen so that the washers do not cover the notches.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Organic Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
• Chutes (AREA)
• Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Applications Claiming Priority (2)

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Citations (1)

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• 2010
  • 2010-12-27 FR FR1061271A patent/FR2969587B1/fr not_active Expired - Fee Related
• 2011
  • 2011-12-21 JP JP2013545473A patent/JP6064113B2/ja active Active
  • 2011-12-21 SG SG2013038914A patent/SG190352A1/en unknown
  • 2011-12-21 KR KR1020137019585A patent/KR101880157B1/ko not_active Expired - Fee Related
  • 2011-12-21 CA CA2816938A patent/CA2816938C/fr not_active Expired - Fee Related
  • 2011-12-21 WO PCT/FR2011/053127 patent/WO2012089965A1/fr not_active Ceased
  • 2011-12-21 EP EP11815499.6A patent/EP2658802A1/de not_active Withdrawn
  • 2011-12-21 US US13/990,294 patent/US9255659B2/en not_active Expired - Fee Related

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