EP1180066B1 - Racleur optimise pour conduite - Google Patents

Racleur optimise pour conduite Download PDF

Info

Publication number
EP1180066B1
EP1180066B1 EP00920850A EP00920850A EP1180066B1 EP 1180066 B1 EP1180066 B1 EP 1180066B1 EP 00920850 A EP00920850 A EP 00920850A EP 00920850 A EP00920850 A EP 00920850A EP 1180066 B1 EP1180066 B1 EP 1180066B1
Authority
EP
European Patent Office
Prior art keywords
disc
polymer
scraping
reinforcing means
conduit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00920850A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1180066A1 (fr
Inventor
Fabrice Dal Maso
Bernard Dewimille
Adrien Braccolino
Lucien Montabord
Frédéric PELLETIER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
John Bean Technologies NV
IFP Energies Nouvelles IFPEN
FMC Technologies SAS
Original Assignee
FMC Europe NV
IFP Energies Nouvelles IFPEN
FMC Europe SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FMC Europe NV, IFP Energies Nouvelles IFPEN, FMC Europe SA filed Critical FMC Europe NV
Publication of EP1180066A1 publication Critical patent/EP1180066A1/fr
Application granted granted Critical
Publication of EP1180066B1 publication Critical patent/EP1180066B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • B08B9/0553—Cylindrically shaped pigs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • B08B9/0557—Pigs with rings shaped cleaning members, e.g. cup shaped pigs

Definitions

  • the invention relates to a reclage device bidirectional for a conduct of fluid distribution and an application of this device.
  • a device of this type is known from EP-A-0 376 796.
  • the invention is particularly well adapted for withstand both severe chemical attack and abrasion.
  • scraper plugs for separate the fluids from each other while cleaning the walls of the conduct. We can also move these scrapers along the entire length of driving to regularly remove deposits that may have formed on the inner walls.
  • US-A-3,619,844 also discloses a scraper with discs made of plastic material.
  • the present invention relates to a scraping device bidirectional for a fluid distribution line according to claim 1 and an application according to claim 14.
  • the device comprises at least one thin disc of rigidified polymer by means reinforcement in the area of the disk that supports the most constraints during the deflection of the disc placed in the pipe during passage of an elbow or when changing direction of scraping.
  • the disc is cut into petals by at least two radial slots of length less than the radius of said disk, said beam being substantially greater than the inner diameter of said pipe.
  • a second thin disc can be superimposed on the first of so that the slots of the two disks are staggered one against the other.
  • Two sealing and scraping assemblies each consisting of at least one thin disc can be linked by a tree and two pieces end-piece so as to space said two sets of approximately length of said tree.
  • Sets may have a thickness less than the space between the shaft and the end pieces so that said disks thin can bend in both directions.
  • the scraping and sealing assembly may further comprise less an unreinforced polymer disc.
  • the reinforcing means may be metallic.
  • the reinforcement means may be in composite material.
  • the reinforcement means can be constituted by a disk split radially.
  • the reinforcing means may be constituted by a disk split in the same way as the scraping polymer disk and sealing.
  • the reinforcement means may be embedded in the disk in polymer.
  • the reinforcement means may be plated on the disk in polymer.
  • the polymer may be a polyamide type thermoplastic, polyethylene, fluoropolymer, for example PEUHMW, ETFE, FEP, PVDF, ECTFE, PFA, PTFE, PEEK, and mixtures thereof; a thermosetting, for example epoxy or polyurethane; a elastomer.
  • the polymer can be loaded with abrasion resistant material.
  • the invention also relates to the application of the device to scraping and / or separation between two fluids, in a pipe of dispensing chemically aggressive fluids to elastomers.
  • FIG. 1A describes a scraper 1 comprising a central body 2 between two end pieces 3, generally identical in the extent the scraper is bidirectional, but this configuration is not a limitation of the present invention.
  • These elements serve their functions main fixing of scraping elements and guiding of the scraper when moving in the pipe and through elbows.
  • the shape of the end pieces can be adapted to allow to stop the scraper against any stop device without damage.
  • the assembly of these three pieces is such that in each of the two spaces 4, stacking disks 5. These disks are low thickness, outer diameter slightly greater than the diameter inside the pipe to scrape.
  • the games j between the disks and the body 2 or the end pieces 3 are usually necessary for the discs may deform in bending and / or buckling when introduction of the scraper into the pipe, and during changes in scraping direction. The function of the games will appear more clearly on the figure 3.
  • the number of overlapping disks can be chosen according to the desired scraping efficiency or longitudinal sealing level that we need.
  • stacking disks may not have reinforcement means and be made of promoting the seal between disks without having a mechanical function to ensure.
  • split sealing discs can be used as the scraping disc, or not split.
  • Figure 1B depicts a scraper 25 consisting mainly of two stackings 26 of scraping disks.
  • a shaft 27 serves as a spacer between the two stacks and fastening means by cooperating with two end pieces 28, the shape of which may make it possible to improve the centering and guiding the scraper in the pipe.
  • the disks are made from a reinforcing core 8 sheathed in plastic material.
  • the diameter of the plastic sheath is such that the disk has a plastic outer ring alone which constitutes the sealing lip and wear.
  • the discs are subjected to compression and bending, which are restored on the inner surface of the tube under the form of contact and friction forces. These forces allow to seal and scrape the inner wall of the tube.
  • FIG. 2A shows, in front view, a scraper disc having slots 11 in a radial direction so as to cut the disc into several "petals" 6.
  • the reinforcing core is also split.
  • a portion 7 of width l is polymer only. That is, the outer diameter of the reinforcement 8 is smaller than the outer diameter of the scraper disc.
  • the reinforcement 8 has a central bore 9 for assembly on the shaft or the body of the scraper.
  • the reinforcing core may be metal made of spring steel, of titanium or nickel alloy, or of material sufficiently rigid so as to act as a reinforcement of rigidity of the assembly of the scraping disk, for example made of composite material or equivalent.
  • the radius Rr of the reinforcement is determined, taking into account the internal radius of the pipe, so as to reinforce the area of the disk which bears the most stress when the disk placed in the pipe is deflected, during the passage of a bend or during change of scraping direction.
  • the outer diameter of the reinforcement is preferably smaller than the internal diameter of the pipe.
  • a number of perforations 10 may make it possible to reinforce the attachment of the plastic to the reinforcement core.
  • the reinforcing core may be overmolded by the plastic material, or possibly plated, for example by gluing, on the disk so as to secure the reinforcing core to the plastic disk.
  • FIG. 2C describes other possible embodiments of the means of reinforcement.
  • the reference 30 designates a reinforcement consisting of wires arranged radially and embedded in the plastic. Stiffness and number of threads determine the level of hardening of the disk 6. In the center 31, the end of each wire can be held by worn washers by the axis of the scraper.
  • Reference 32 shows a reinforcing soul constituted by a series of radial blades. The rigidity of a record of reinforcement, metallic or composite, can indeed be diminished by the cutting of a number of radial slots.
  • the reinforced petal 33 is consisting of woven-reinforced polymer, steel wires, glass, or equivalent. The reinforcing fabric has a surface and a thickness determined to obtain the desired rigidity of the petal.
  • FIG. 2B shows the method of superposition of two discs 21 and 22 (shown online dashed). Slots 23 and 24 respectively of each disc do not must not coincide in order to substantially reconstitute a washer plastic by the combination of two discs. It is clear that one of the two discs may not have reinforcement, so be fully polymer, or any other suitable material, preferably split into "petals" as well, but this is not an obligation in this invention.
  • This disc mainly provides only the sealing function. Preferably, this disc made of polymer alone, or any other material adequate, is placed between two reinforced discs.
  • the radius of the disc can be in the range of 54 and 58 mm, preferably between 55 and 57 mm for a spoke pipe internal 53.5 mm.
  • the disc is cut into eight petals of equal width.
  • Figure 3 describes the deformation of a disk during a change of scraping direction in the inner duct 12.
  • the position of the blade 13 shows the deformation of a disk when the scraper is introduced into the pipe in the direction indicated by reference 14.
  • each disc When the scraper is moved in the opposite direction, each disc flexes and flames according to the deformations represented by sections 15 and 16, to then take the final form 17, symmetrical to the 13.
  • the silhouettes of abutments 18 and 19 demonstrate the utility and the role games j of Figure 1A.
  • the distance when buckling of the flipping disc shows that it is necessary a sufficient game, dependent of the geometry of the disc and its reinforcement, so that the disc admits a reversal of scraping direction.
  • the wear of the head of the plastic petals causes a decrease in the length of the lamella and consequently a change of the contact forces against the wall. Wear of the head therefore directly conditions the life of the scraper. So, he can be interesting to optimize this parameter by reducing the rate of wear of the material.
  • we can improve the formulation of the plastic of base for example by loading it with abrasion-resistant particles, or by mixing it with another polymer, for example PTFE.
  • the present invention thus makes it possible to form a scraper optimized from the point of view of wear and resistance to aggressive fluids, but also from the point of view of implementation. Indeed, for the same driving, one can choose to overlay the number of discs needed depending on the operational situation: viscous fluid or not, loaded or not, tight separation, etc.
  • the refurbishment of a scraper could consist of a change of a single disk and not of the complete set of sealing and scraping stacking.

Landscapes

  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Cleaning In General (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Pipeline Systems (AREA)
  • Liquid Crystal Substances (AREA)
  • Lubricants (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Die Bonding (AREA)
  • Lead Frames For Integrated Circuits (AREA)
  • Paper (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Centrifugal Separators (AREA)
EP00920850A 1999-05-06 2000-04-19 Racleur optimise pour conduite Expired - Lifetime EP1180066B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9905891 1999-05-06
FR9905891A FR2793171B1 (fr) 1999-05-06 1999-05-06 Racleur optimise pour conduite
PCT/FR2000/001032 WO2000067926A1 (fr) 1999-05-06 2000-04-19 Racleur optimise pour conduite

Publications (2)

Publication Number Publication Date
EP1180066A1 EP1180066A1 (fr) 2002-02-20
EP1180066B1 true EP1180066B1 (fr) 2005-02-16

Family

ID=9545381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00920850A Expired - Lifetime EP1180066B1 (fr) 1999-05-06 2000-04-19 Racleur optimise pour conduite

Country Status (13)

Country Link
US (1) US6574821B1 (enExample)
EP (1) EP1180066B1 (enExample)
JP (1) JP2002543969A (enExample)
KR (1) KR20020021372A (enExample)
AT (1) ATE289224T1 (enExample)
AU (1) AU4126800A (enExample)
CA (1) CA2373100C (enExample)
DE (1) DE60018178T2 (enExample)
ES (1) ES2248069T3 (enExample)
FR (1) FR2793171B1 (enExample)
PT (1) PT1180066E (enExample)
TW (1) TW530141B (enExample)
WO (1) WO2000067926A1 (enExample)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070193148A1 (en) * 2006-02-03 2007-08-23 Simko Peter J End cap
US8051523B1 (en) * 2006-09-28 2011-11-08 Goodway Technologies Corporation Tube cleaning implement
CA2611271C (en) * 2007-02-01 2014-02-18 Altex Technologies Inc. Scraping element for a pipeline pig
US20100205757A1 (en) * 2009-02-18 2010-08-19 Munden Bruce A Bypass pig
US20100205822A1 (en) * 2009-02-18 2010-08-19 Munden Bruce A Method of drying a tubular string to prevent bedwrap corrosion
JP5968603B2 (ja) * 2011-07-29 2016-08-10 有限会社丸甚製作所 管体の内面処理器
USD759213S1 (en) * 2013-12-19 2016-06-14 Uresh Ag Pipeline pig
US11235347B2 (en) * 2015-07-10 2022-02-01 Plastocor, Inc. System and method for coating tubes
DE102015122252A1 (de) * 2015-12-18 2017-06-22 Rosen Swiss Ag Molch zur Inspektion und/oder Reinigung von Rohrleitungen
CA2923031A1 (en) 2016-03-08 2017-09-08 Bronislav Walter Guide for a pipeline pig
CN107879401A (zh) * 2017-12-18 2018-04-06 南通善水化工科技发展有限公司 一种移动式加药装置
FR3079431A1 (fr) * 2018-03-27 2019-10-04 Westair Nettoyeur d’une tuyauterie
CN109985869B (zh) * 2019-04-28 2021-12-31 东软威特曼生物科技（沈阳）有限公司 反应杯清洗针、反应杯清洗装置和反应杯的清洗方法
WO2021072494A1 (en) * 2019-10-18 2021-04-22 Clearguard Ipco Pty Ltd Tapping point clearing apparatus
KR102894066B1 (ko) * 2023-11-14 2025-12-01 강태형 발전기능이 있는 피그

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619844A (en) * 1970-08-03 1971-11-16 Oil States Rubber Co Disc type pipeline scraper and batch separator
US4506401A (en) * 1984-01-16 1985-03-26 Knapp Kenneth M Bristle pig cup
FR2612091B1 (fr) * 1987-03-12 1990-02-23 Le Roy Jean Racleur bidirectionnel pour oleoduc
DE69112620T2 (de) * 1990-05-18 1996-02-08 Graham Hubert Collaroy Neusuedwales Smith Vorrichtung zum reinigen von rohren.
US5457841A (en) * 1994-10-13 1995-10-17 Continental Emsco Company Cleaning pig for pipeline of varying diameter
US5698042A (en) * 1996-02-09 1997-12-16 Praxair Technology, Inc. Method of cleaning furnace headers
JP3488891B2 (ja) * 1997-11-17 2004-01-19 綜研化学株式会社 配管内拭浄ピグ

Also Published As

Publication number Publication date
WO2000067926A1 (fr) 2000-11-16
FR2793171A1 (fr) 2000-11-10
ES2248069T3 (es) 2006-03-16
DE60018178T2 (de) 2005-12-29
CA2373100A1 (fr) 2000-11-16
KR20020021372A (ko) 2002-03-20
US6574821B1 (en) 2003-06-10
TW530141B (en) 2003-05-01
DE60018178D1 (de) 2005-03-24
PT1180066E (pt) 2005-06-30
EP1180066A1 (fr) 2002-02-20
CA2373100C (fr) 2009-02-10
FR2793171B1 (fr) 2001-06-15
JP2002543969A (ja) 2002-12-24
ATE289224T1 (de) 2005-03-15
AU4126800A (en) 2000-11-21

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