WO2017162658A1 - Tete d'aspiration de boue, utilisable notamment en milieu radioactif, comprenant des moyens de fragmentation de boue - Google Patents
Tete d'aspiration de boue, utilisable notamment en milieu radioactif, comprenant des moyens de fragmentation de boue Download PDFInfo
- Publication number
- WO2017162658A1 WO2017162658A1 PCT/EP2017/056675 EP2017056675W WO2017162658A1 WO 2017162658 A1 WO2017162658 A1 WO 2017162658A1 EP 2017056675 W EP2017056675 W EP 2017056675W WO 2017162658 A1 WO2017162658 A1 WO 2017162658A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- suction head
- fragmentation
- strainer
- sludge
- suction
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
- E02B3/023—Removing sediments
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
Definitions
- the invention relates to a sludge suction head, for transferring effluents, particularly radioactive, from a first container where they have been stored temporarily to a second container.
- the transfer of sludge is likely to have to be carried out from areas difficult or even not accessible to humans, the nuclear field having the additional constraint of having to limit the exposure of human operators to radiation, which makes such a transfer of sludge more difficult to implement. artwork.
- the invention aims to at least partially solve the problems encountered in known solutions, including clogging problems of a suction head.
- the subject of the invention is a sludge suction head which can be used in particular in radioactive medium.
- the suction head includes a strainer, sludge debridement means, and sludge dilution means.
- the sludge dewatering and sludge dilution means are configured to limit clogging of the strainer. Thanks to the suction head according to the invention, clogging of a suction member is limited, while being able to take into account the constraints inherent in the treatment and sanitation of radioactive environments.
- the clogging of the suction head with sludge of variable rheological properties, including spatially, is reduced, while avoiding excessive dilution of these sludge.
- Exposure to radiation from a human operator can also be reduced by limiting unclogging operations by the operator.
- the invention may optionally include one or more of the following features combined with one another or not.
- the suction head comprises cleaning means and / or unclogging configured to limit the clogging of the strainer.
- the fragmentation means comprise a first fragmentation tool configured to be rotatable relative to the strainer.
- the fragmentation means further comprise a second fragmentation tool configured to be mobile in rotation with respect to the strainer, this second fragmentation tool being located upstream of the first fragmentation tool.
- At least the first fragmentation tool is configured to be in contact with the strainer, to scrape the strainer.
- the fragmentation means comprise at least one blade and / or a claw.
- at least part of the fragmentation means is made of a flexible and hydrophobic material such as an elastomer.
- the flexible and hydrophobic material has a hardness on the Shore A scale which is between 70 and 90 Sh A.
- the dilution means are configured to inject a liquid, preferably aqueous, in contact with the fragmentation means.
- the dilution means comprise at least one fluid injection nozzle.
- the dilution means are configured to inject a liquid under pressure in a direction substantially orthogonal to a longitudinal axis of the suction head.
- the strainer comprises a central portion of curved shape.
- the suction head comprises a rotor comprising the fragmentation means and a cylindrical body, at least a portion of the fragmentation means being located inside the cylindrical body being rigidly secured to the cylindrical body.
- the suction head comprises an outer envelope which at least partially surrounds the fragmentation means and the dilution means, the outer envelope being traversed by at least one lateral opening.
- the invention also relates to a sludge suction member, particularly for use in a radioactive medium.
- the suction member comprises a suction head as defined above, means for driving at least part of the means of fragmentation in rotation relative to the strainer, and liquid supply means for dilution means.
- the invention also relates to sludge transfer means, particularly for use in a radioactive medium.
- the sludge transfer means comprise a suction member as defined above, a gripping member of the suction member, and a remote operation device configured to tele operate the displacement of the gripping member relative to a first container.
- the invention relates to a method for extracting sludge, which can be used in particular in a radioactive medium, by means of a suction head as defined above, of a suction member as defined above, and / or a transfer means as defined above.
- Figure 1 is a schematic elevational view of radioactive sludge transfer means from a first container to a second container, according to a first embodiment
- Figure 2 is a side view of a suction head of the sludge transfer means, according to the first embodiment
- Figure 3 is a longitudinal sectional view of the suction head according to the first embodiment
- FIG. 4 is a cross-sectional view along the arrow
- FIG. 5 is a partial schematic view according to the arrow
- Figure 6 is a schematic partial view of three quarter face of the rotor of the suction head
- Figure 7 is a partial schematic view of a strainer of the suction head. DETAILED PRESENTATION OF PARTICULAR EMBODIMENTS
- FIG. 1 represents a means 3 for transferring effluents in a radioactive medium from a first container 1 to a second container 2.
- effluents comprise sludge whose rheological properties can be very variable, especially spatially according to their position in the first container 1.
- the first container 1 is for example a tank or a pit for temporary storage of these effluents, before their subsequent treatment or storage in the second container 2.
- the transfer means 3 comprise a suction member 4 at least partially housed in the first container 1, a flexible hose 31 connected to the suction member 4, a pump 30, an articulated arm 33 and a remote operation device 36.
- the hose 31 is used to convey the effluents from the suction member 4 to the second container 2.
- the pump 30 provides the power necessary for the suction of the effluent by the suction member 4 and their routing in the hose 31.
- the articulated arm 33 is configured to grip the suction member 4 at a first gripping member 41 and a second gripping member 42.
- the arm 33 forms a gripping member of the suction member 4.
- the remote operation device 36 is configured to control the displacement of the articulated arm 33, so as to allow a human operator to manipulate the suction member 4, while being protected from the effluent radiation.
- the suction member 4 is shown in greater detail with reference to FIGS. 2 and 3. It comprises a body 40, a tip 44, the gripping elements 41, 42, a suction head 5, drive means 9 and liquid supply means 8.
- the suction member 4 is substantially of revolution about a longitudinal axis 43, with the exception in particular of the drive means 9 and the liquid supply means 8.
- the body 40 has the shape of a cylindrical tube. It extends in the direction of the longitudinal axis 43 between the nozzle 44 and the suction head 5.
- the body 40 is hydraulically connected to the hose 31 by the nozzle 44 and conveys the radioactive effluents sucked from the suction head 5 to the nozzle 44.
- the body 40 carries the gripping elements 41, 42 which each take the form of an annular flange. These gripping elements 41, 42 are spaced from each other along the direction of the longitudinal axis 43, downstream of the head 5.
- a longitudinal direction refers to the direction of the longitudinal axis 43 of the suction member 4
- a radial direction is a direction orthogonal to this axis
- a transverse plane is a plane orthogonal to this axis
- a circumferential direction is a direction around this axis.
- upstream and downstream directions are named with reference to the flow direction of the effluents when they are sucked by the suction head 5, that is to say of the suction head 5 towards the endpiece 44.
- the suction head 5 comprises a stator 50 and a rotor 6.
- the stator 50 comprises an outer casing 51 and a strainer 52.
- the rotor 6 comprises a cylindrical body 61, nozzles 60 for injecting water under pressure, sludge breaking means 7, and a central rod 64.
- the outer casing 51 has a cylindrical tube shape and surrounds the cylindrical body 61. It delimits the suction head 5 radially outwardly.
- the outer casing 51 includes an upstream end which comprises a succession of teeth 58 separated by recesses 57. The teeth 58 are spaced from each other along a circumferential direction of the outer casing 51 about the axis. longitudinal 43.
- These recesses 57 are lateral openings which pass through the outer casing 51. They make it possible to limit the suction phenomenon of the suction head 5, for example when it is in contact with the bottom of the first container 1. In addition, certain particles / aggregates present in the sludge can be discharged out of the suction head 5 by these recesses 57.
- the strainer 52 is shown in more detail in FIG.
- the strainer 52 has a central portion 55 of curved shape, thus defined to maximize the available area for the perforations 54 of the strainer, and to allow the positioning of the first fragmentation tool 70.
- the central portion 55 is provided with a central hole 53. This central hole 53 is traversed by the rod 64.
- the strainer 52 also comprises a multitude of perforations 54 at the periphery of the central hole 53, to allow the flow of effluents through the suction member 4, by limiting its clogging.
- These perforations 54 of the strainer 52 have a diameter adapted to the maximum particle size acceptable for the equipment located downstream of the strainer.
- the total surface of these perforations 54 represents, thanks to the curved shape of the strainer 52, of the order of 2 to 3 times the section of the end piece 44 and the downstream piping (in particular of the flexible pipe 31), this to limit the pressure drop at the suction head.
- the cylindrical body 61 contains a first fragmentation tool 70 and the strainer 52 which is located downstream of the first fragmentation tool 70.
- the cylindrical body 61 comprises in its downstream part a ring gear 62 for driving the cylindrical body 61 in rotation with respect to the stator 50 about the longitudinal axis 43.
- the first fragmentation tool 70 comprises a first blade 71, a second blade 72 and a central element 74 in the form of a bar which mechanically connects the two blades 71, 72.
- the first fragmentation tool 70 is monoblock. It is made of a material comprising a flexible and hydrophobic material, preferably an elastomer such as a natural rubber, an EPDM, or high-density polyethylene, and whose hardness on the Shore A scale is typically between 70.degree. and 90 Sh A.
- a material comprising a flexible and hydrophobic material, preferably an elastomer such as a natural rubber, an EPDM, or high-density polyethylene, and whose hardness on the Shore A scale is typically between 70.degree. and 90 Sh A.
- the first blade 71 and the second blade 72 are inclined relative to the longitudinal axis 43 of the suction member. They are configured to be in contact with the strainer 52 to scrape it, so as to limit clogging.
- the blades 71, 72 are also configured to break up the particles or aggregates of large size, in particular of greater diameter than the diameter of the perforations 54, which would still be present in the mud, to prevent these particles / aggregates from clogging the strainer 52.
- the central element 74 extends in a longitudinal direction which is preferably substantially orthogonal to the direction of the axis 43 of the body. It is rigidly secured to the body 61 at each of its longitudinal ends. The first fragmentation tool 70 is then rigidly integral in rotation with the cylindrical body 61.
- the central element 74 is traversed by a central hole 73 in which is inserted the rod 64.
- This rod 64 is configured to rotate in relation to the strainer 52 a second fragmentation tool 76 which will be described below.
- the rotor 6 comprises four nozzles 60, in the embodiment shown.
- the nozzles 60 are partially housed in the wall of the cylindrical body 61 and they open radially on the inside of the cylindrical body 61.
- the nozzles 60 are distributed uniformly along the circumferential direction of the cylindrical body 61.
- nozzles 60 are oriented substantially orthogonal to the longitudinal axis 43 to inject a pressurized liquid, typically water, in contact with the blades 71, 72.
- a pressurized liquid typically water
- two nozzles are for example configured to inject pressurized water in a radial direction YY.
- the nozzles 60 are configured to inject water under pressure in contact with the upstream face of the blades 71, 72, to facilitate the fragmentation of the sludge in contact with these blades 71, 72 by diluting the sludge locally at this location.
- They are also configured to inject pressurized water into contact with the downstream face of the blades 71, 72, to facilitate the scraping of the strainer 52 by the blades 71, 72 and to clean the strainer 52, by diluting the sludge locally. in this location.
- the nozzles 60 then act as dilution means for the sludge circulating in the suction head 5. They allow a local supply of liquid to dilute the sludge, which offers the possibility of reducing the overall dilution of the radioactive effluents for the transferring from the first container 1 to the second container 2.
- the second fragmentation tool 76 comprises a set 76 of claws 77.
- This set of claws 76 extends along a diameter of the suction head 5, upstream of the first fragmentation tool 70.
- the blades 71, 72 are located between the strainer 52 and the claws 77 along the longitudinal direction 43 of the suction member 4.
- the set of claws 76 is projecting from the cylindrical body 61 and the outer casing 51 along the longitudinal axis 43 of the suction member 4, towards the outside of the suction member 4.
- the clearance 76 comprises four claws, two central claws 77 oriented substantially parallel to the longitudinal axis 43 of the suction member 4, and two lateral claws 77 which are inclined radially towards the longitudinal axis. outside the suction head 5.
- the set of claws 76 then serves to perform a first fragmentation of the particles / aggregates present in the sludge, before this sludge comes into contact with the blades 71, 72.
- the first fragmentation tool 70 and the set of claws 76 form fragmentation means 7 of sludge of the suction head 5.
- the fragmentation means 7 limit the clogging of the strainer 52, by promoting the evacuation of the sludge through the strainer 52.
- the fragmentation means 7 and the nozzles 60 thus form jointly cleaning means and declogging the strainer 52.
- the drive means 9 are configured to drive the rotor 6 in rotation about the longitudinal axis 43 of the suction member.
- the drive means 9 comprise a power supply cable 91, a motor 92, a toothed wheel 93 and at least one bearing 94.
- the electrical cable 91 runs along the body 40, along the longitudinal axis 43 of the suction member 4. It electrically supplies the motor 92.
- the motor 92 drives the toothed wheel 93 in rotation around the longitudinal axis 43
- This toothed wheel 93 meshes with the ring gear 62 of the cylindrical body 61, for driving the cylindrical body 61 in rotation about the longitudinal axis 43.
- the bearing 94 allows the rotor 6 to be rotatable relative to the outer casing 51 .
- the nozzles 60 are fed with liquid under pressure by the liquid supply means 8.
- These liquid supply means 8 comprise a water supply pipe 81 and a channel 82.
- the feed pipe 81 in pressurized water runs along the body 40, along the longitudinal axis 43 of the suction member 4.
- the water supply pipe 81 and the electric cable 91 are located laterally on the and other body 40.
- the supply pipe 81 is fluidly connected to the channel 82 which supplies the nozzles 60 with water under pressure.
- the channel 82 extends along the cylindrical body 61, inside a wall of the cylindrical body 61.
- the suction member 4 is inserted into the first container 1 which contains the radioactive effluents by the articulated arm 33.
- the suction head 5 is brought into contact with the radioactive effluents by the articulated arm 33.
- Articulated arm is tele operated by a human operator who is remote from the first container 1 and is protected from radiation.
- the radioactive effluents are sucked locally by the suction head 5.
- the set of claws 76 performs a prior fragmentation of the large particles / aggregates.
- the sludge is diluted locally by the nozzles 60 and is broken up again by the blades 71, 72.
- mud passes through the strainer 52 at its perforations 54, while the remaining aggregates / particles are removed or continue to be fragmented by the fragmentation means 7.
- the effluents that passed through the strainer 52 are sucked inside the body 40 to the end piece 44, then along the flexible pipe 31, to the second container 2.
- the articulated arm 33 is then operated to move the suction member 4 to another location of the first container 1.
- the articulated arm 33 is remote operated to remove the organ 4 suction of the first container 1.
- the suction member 4 is washed and decontaminated.
- nozzles 60 could be housed in the outer casing 51, rather than in the cylindrical body 61.
- the number of nozzles 60 may vary and their distribution may be non-uniform around the cylindrical body 61, depending in particular on the number of blades 71, 72.
- the orientation of the nozzles 60 relative to the longitudinal axis 43 is variable, depending on the shape of the blades 71, 72 for example.
- the liquid used to dilute the effluents is preferably an aqueous medium but not necessarily.
- the blades 71, 72 and / or the claws 77 may also be used, at least in part, to suspend the sludge, so as to facilitate its suction.
- the number, distribution and orientation of the blades 71, 72 and claws 77 relative to the longitudinal axis 43 may vary. Furthermore, the clearance 76 of claws is optional if the sludge has a non-penalizing rheology for the recovery of muddy effluents.
- the shape of the strainer 52 may vary, depending in particular on that of the blades 71, 72. Moreover, blades 71, 72 may also be present downstream of the strainer 52.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Cleaning In General (AREA)
- Treatment Of Sludge (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1815512.7A GB2564594B (en) | 2016-03-24 | 2017-03-21 | Sludge suction head for use in particular in radioactive environments, comprising sludge comminuting means |
JP2018549839A JP6865766B2 (ja) | 2016-03-24 | 2017-03-21 | スラッジ粉砕手段を含む、特に放射性環境で使用されるスラッジ吸引ヘッド |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1652539 | 2016-03-24 | ||
FR1652539A FR3049382B1 (fr) | 2016-03-24 | 2016-03-24 | Tete d'aspiration de boue, utilisable notamment en milieu radioactif, comprenant des moyens de fragmentation de boue |
Publications (1)
Publication Number | Publication Date |
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WO2017162658A1 true WO2017162658A1 (fr) | 2017-09-28 |
Family
ID=56119561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2017/056675 WO2017162658A1 (fr) | 2016-03-24 | 2017-03-21 | Tete d'aspiration de boue, utilisable notamment en milieu radioactif, comprenant des moyens de fragmentation de boue |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP6865766B2 (fr) |
FR (1) | FR3049382B1 (fr) |
GB (1) | GB2564594B (fr) |
WO (1) | WO2017162658A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116168868A (zh) * | 2023-01-03 | 2023-05-26 | 中国原子能科学研究院 | 用于清理放射性废液沉积物的可移动设备 |
Citations (2)
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US7370445B2 (en) * | 2005-12-21 | 2008-05-13 | Nukem Limited | Sludge removal |
WO2011073500A1 (fr) * | 2009-12-14 | 2011-06-23 | Yhteisviejät Tamex Oy | Unité de couteau équipée d'une pompe |
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JPS5514912A (en) * | 1978-07-15 | 1980-02-01 | Toshiba Corp | Strainer scale removing device |
JPS6427608A (en) * | 1987-07-24 | 1989-01-30 | Toshiba Corp | Strainer |
JPH05107159A (ja) * | 1991-10-21 | 1993-04-27 | Toshiba Corp | スラツジサンプリング装置 |
JPH1137099A (ja) * | 1997-07-22 | 1999-02-09 | Matsuura Kikai Seisakusho:Kk | ポンプの吸い込み口詰まり防止装置 |
JP3662554B2 (ja) * | 2002-06-03 | 2005-06-22 | ジェコス株式会社 | 振動撹拌吸い込み装置 |
US7754073B2 (en) * | 2005-11-22 | 2010-07-13 | Ultra Aquatic Technology Pty Ltd | Method and apparatus for collecting and/or removing sludge |
JP5606931B2 (ja) * | 2011-01-11 | 2014-10-15 | 太平電業株式会社 | 放射性スラッジ移送装置 |
US8679335B1 (en) * | 2012-12-21 | 2014-03-25 | Saniprotex Inc. | Vehicle-mounted vacuum system and method of separating liquid and solids fractions of a sludge-like mixture inside a container |
JP2014145635A (ja) * | 2013-01-29 | 2014-08-14 | Toshiba Corp | 炉心溶融物取出方法及びシステム |
CN209226799U (zh) * | 2018-12-19 | 2019-08-09 | 青岛伟华新能源科技有限公司 | 一种污泥治理防堵塞吸头 |
-
2016
- 2016-03-24 FR FR1652539A patent/FR3049382B1/fr active Active
-
2017
- 2017-03-21 JP JP2018549839A patent/JP6865766B2/ja active Active
- 2017-03-21 GB GB1815512.7A patent/GB2564594B/en active Active
- 2017-03-21 WO PCT/EP2017/056675 patent/WO2017162658A1/fr active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7370445B2 (en) * | 2005-12-21 | 2008-05-13 | Nukem Limited | Sludge removal |
WO2011073500A1 (fr) * | 2009-12-14 | 2011-06-23 | Yhteisviejät Tamex Oy | Unité de couteau équipée d'une pompe |
Non-Patent Citations (2)
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ANONYMOUS: "Flotte Lotte - Wikipedia", 17 August 2015 (2015-08-17), XP055323496, Retrieved from the Internet <URL:https://de.wikipedia.org/wiki/Flotte_Lotte> [retrieved on 20161128] * |
FIRMEN & PRODUKTE: "Schlammsaugerinnovation", 2 March 2006 (2006-03-02), pages 70 - 71, XP055323582, Retrieved from the Internet <URL:http://www.wunschgarten.ch/Produkte/Schlammsauger%20Webseite-Dateien/0612%20Innovationsbericht%20der%20Schlammsauger.pdf> [retrieved on 20161128] * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116168868A (zh) * | 2023-01-03 | 2023-05-26 | 中国原子能科学研究院 | 用于清理放射性废液沉积物的可移动设备 |
CN116168868B (zh) * | 2023-01-03 | 2024-03-22 | 中国原子能科学研究院 | 用于清理放射性废液沉积物的可移动设备 |
Also Published As
Publication number | Publication date |
---|---|
GB2564594A (en) | 2019-01-16 |
FR3049382B1 (fr) | 2020-10-02 |
JP2019510976A (ja) | 2019-04-18 |
JP6865766B2 (ja) | 2021-04-28 |
FR3049382A1 (fr) | 2017-09-29 |
GB2564594B (en) | 2021-06-23 |
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