EP0146833A2 - Dispositif pour le polissage électrolytique des surfaces intérieures d'objets cylindriques creux - Google Patents

Dispositif pour le polissage électrolytique des surfaces intérieures d'objets cylindriques creux Download PDF

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Publication number
EP0146833A2
EP0146833A2 EP84114684A EP84114684A EP0146833A2 EP 0146833 A2 EP0146833 A2 EP 0146833A2 EP 84114684 A EP84114684 A EP 84114684A EP 84114684 A EP84114684 A EP 84114684A EP 0146833 A2 EP0146833 A2 EP 0146833A2
Authority
EP
European Patent Office
Prior art keywords
sponge
hollow cylindrical
chassis
cylindrical body
axis
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.)
Granted
Application number
EP84114684A
Other languages
German (de)
English (en)
Other versions
EP0146833B1 (fr
EP0146833A3 (en
Inventor
Hermann Dipl.-Ing. Operschall
Klaus-Alfred Steiner
Ludwig Dipl.-Ing. Voggenthaler (Fh)
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.)
Siemens AG
Original Assignee
Kraftwerk Union AG
Siemens AG
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 Kraftwerk Union AG, Siemens AG filed Critical Kraftwerk Union AG
Publication of EP0146833A2 publication Critical patent/EP0146833A2/fr
Publication of EP0146833A3 publication Critical patent/EP0146833A3/de
Application granted granted Critical
Publication of EP0146833B1 publication Critical patent/EP0146833B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F7/00—Constructional parts, or assemblies thereof, of cells for electrolytic removal of material from objects; Servicing or operating
    • 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
    • G21F9/001—Decontamination of contaminated objects, apparatus, clothes, food; Preventing contamination thereof
    • G21F9/002—Decontamination of the surface of objects with chemical or electrochemical processes
    • G21F9/004—Decontamination of the surface of objects with chemical or electrochemical processes of metallic surfaces

Definitions

  • the invention relates to a device for electropolishing the inner surface of hollow cylindrical bodies with at least one sponge electrode guided along the inner surface thereof and with devices for guiding and supplying the sponge electrode with electrolyte.
  • the present invention is therefore based on the object of showing a way in which hollow cylindrical bodies, such as pipes, elbows and containers, can be decontaminated without using too much electrolyte and without exposing the operating personnel to excessive radiation exposure. Long pipe sections, elbows and larger containers should be decontaminated or electropolished.
  • the sponge electrode is therefore supported according to the invention on a chassis which is supported on the inner surface of the hollow cylindrical body and which can be displaced along its axis of curvature, can be pressed against the inner surface and rotated about its axis of curvature.
  • a uniform pressure of the sponge electrode on the inner surface to be cleaned is ensured even with very long pipe sections and the operator can stay at a greater distance from the contaminated inner surface of the hollow cylindrical body.
  • the consumption of electrolyte liquid due to the use of a sponge electrode is also kept within limits when decontaminating long pipe sections and larger containers. This is of great importance in connection with the disposal of the electrolyte liquid.
  • the sponge electrode can preferably be rotatable relative to the chassis about the axis of curvature of the hollow cylindrical body and about the axis of symmetry of the chassis parallel thereto.
  • the electropolishing performance can be increased considerably if several sponge electrodes are held on the chassis in a plane aligned perpendicular to the axis of symmetry of the chassis, offset by the same pitch angle.
  • the simultaneously electropolished surface can be multiplied without having to use sponge electrodes that are too large. Because the latter would restrict the use of the device to hollow cylindrical bodies of certain closely adjacent radii of curvature.
  • this measure creates the precondition for rotating the sponge electrodes about the axis of symmetry of the chassis only a little more than their pitch angle according to a further particularly advantageous embodiment of the invention. This in turn simplifies the construction of the actuator required for this.
  • the device 1 for electroplating consists of a chassis 3 which can be inserted into the hollow cylindrical body 2 - in the exemplary embodiment a pipe socket -, a rerailing device 4 for the chassis which can be connected to the hollow cylindrical body, a push rod 5 for the chassis 3 and a feed device 6 which is gimbal-mounted on the rerailing device 4 the push rod 5.
  • the device 1 for electropolishing according to the invention also includes devices for supplying, discharging and processing the electrolyte liquid, as well as a power supply device.
  • Fig. 1 the chassis 3 is shown in a position in which it has just been inserted by the feed device 6 by means of the push rod 5 - here a rack - from the rerailing device 4 into the pipe socket 2 to be electropolished, cut open.
  • Fig. 1 can be seen in connection with Fig. 2, which is a section along the line II-II of 1 shows that the chassis 3 consists of a support cylinder 7 which is aligned axially with the hollow cylindrical body 2 to be cleaned and which has support legs 9, 10, 11 pivoted at its two ends by three each by 120 ° relative to the axis of symmetry 8 of the support cylinder , 12, 13, 14, on the inner surface of the hollow cylindrical body 2.
  • the three support legs 9 to 14 are each provided with an impeller 15, 16, 17, 18, 19, 20.
  • two 16, 17, 19, 20 of the three impellers arranged on each side of the support cylinder 7, as indicated in FIG. 1, are at different radial distances from the support cylinder 7 on the support legs 10, 11, 13, 14 screwable.
  • the impeller 15, 18 of the respective third support leg 9, 12 can be pressed against the inner wall of the hollow cylindrical body by means of a pressure piston 23, 24 which can be adjusted in a pressure cylinder 21, 22 which can be acted upon on both sides.
  • a ring 25 is rotatably mounted, on which four sponge electrodes 26, 27, 28, 29 are attached.
  • the sponge electrodes are coupled to the spring-loaded piston rod 30, 31, 32, each of which has a working cylinder 34, 35, 36, 37 that can be loaded on one side, and can be pressed via its piston rod to the inner surface of the hollow cylindrical body 2 to be electropolished, and can be raised via the internals of the same.
  • a support plate 38 is mounted on the support cylinder 7 of the chassis 3. It projects beyond the rotatable ring 25 on opposite sides.
  • a hydraulic cylinder 39, 40 which can be acted upon on one side is mounted.
  • a small chain wheel 43, 44 is mounted on the piston rods 41, 42 of these two hydraulic cylinders.
  • the two ends of a finite chain 46 are fastened on opposite sides of the rotatable ring. This chain 46 is, as shown in FIG.
  • the rerailing device 4 consists essentially of a tube 47 with the same inside diameter as the pipe socket 2 to be electroplated.
  • This pipe 47 of the rerailing device is closed on its side facing away from the pipe socket 2 to be electro-polished by a flanged cover 48 .
  • the rerailing device On its open side facing the pipe socket to be electropolished, the rerailing device is provided with guide angles 49 (only one shown) and tensioning devices 50 (only one shown).
  • the tube of the rerailing device carries two eyelets 51, 52. This tube 47 of the rerailing device 4 is long enough that it can completely accommodate the chassis 3 after completion of the work.
  • the feed device 6 is suspended in a manner not shown here, centered on the cover 48 of the rerailing device 4 and gimballed on it.
  • the feed device has an electric motor 53, the toothed pinion (not shown) of which is in engagement with the toothed rack 5, which is guided through the feed device 6 approximately axially to the tube 47 of the rerailing device 4.
  • the pinion can be disengaged.
  • the rack 5 can also be moved manually via a handle 54.
  • the rack is articulated to the support cylinder 7 of the chassis 3.
  • Fig. 4 shows a plan view of one of the sponge electrodes 26, 27, 28, 29. It can be seen here that the sponge electrode 26, which has a circular disk-shaped outline, with its side facing away from the surface to be cleaned of the inner wall 65 of the pipe socket 2 on one side cross-shaped guide frame 66 is screwed. 5, a ball joint 67 is mounted, which can be screwed onto the piston rod 30, 31, 32, 33 of one of the working cylinders 34, 35, 36, 37 attached to the rotating ring 25 and screwed onto the piston rod 30 is. A ball roller cage 68, 69, 70, 71 is attached to the four ends of the guide frame.
  • the housing ring 72 of the sponge electrode 26 which is screwed directly onto the cross-shaped guide frame 66, has an annular seal 73 on its side facing the inner wall 65 of the hollow cylindrical body 2 to be electropolished.
  • the outer edge of another ring-shaped one Rubber seal 74 clamped. Its inner edge is tightly clamped on the edge of a pot-shaped pressure plate 75.
  • This pot-shaped pressure plate 75 carries a sponge body 76 in the bottom area, on its side facing the surface to be electropolished.
  • the pot-shaped pressure plate 75 is held centered by the ring-shaped rubber seal 74 relative to the housing ring 72. It is provided with four electrolyte inlet pipe connections 77, 78, 79, 80, which are guided so as to be longitudinally displaceable through one of the four arms 81, 82, 83, 84 of the cruciform guide frame 66. A pressure spring 85 (only one shown) is placed over these four electrolyte inlet pipe connections 77, 78, 79, 80, which are supported on one side on the guide frame 66 and on the other side on the cup-shaped pressure plate 75 and the latter against them Press the electropolishing inner wall 65.
  • the electrolyte feed line connecting pieces 77, 78, 79, 80 are led through the bottom area of the pot-shaped pressure plate 75 into the sponge body 76.
  • a hollow cylindrical body 2 for example a pipe section or pipe socket
  • the device 1 according to the invention for electropolishing ie the rerailing device 4 with the chassis 3 located in the rerailing device and the gimbal-mounted feed device 6 on the cover 48 of the rerailing device by means of the lifting eyes 51, 52 from a crane in front of the electropolishing pipe socket 2 are transported.
  • the rerailing device 4 is centered on the pipe socket 2 to be electropolished by means of the guide angles 49 and clamping means 50 and brought into contact.
  • the chassis 3 with the sponge electrodes 26, 27, 28, 29 can now be inserted via the electric motor 53 or also manually via the handle 54 by axially displacing the rack 5 in the feed device 6 into the pipe socket 2 to be electropolished. As soon as the sponge electrodes 26, 27, 28, 29 are inside the pipe socket, they can be moved via the piston rods 30, 31, 32, 33 deL. Working cylinders 34, 35, 36, 37 are pressed against the inner surface of the pipe socket.
  • the sponge electrodes will fit snugly against the inner surface of the hollow cylindrical body even if the chassis 3 is not centered in the axis of curvature of the hollow cylindrical body or if its radius of curvature changes in the circumferential direction.
  • the respective working cylinder 34, 35, 36, 37 the individual sponge electrode can only press against the inner surface 65 of the hollow cylindrical body until the rollers of the ball roller cages 68, 69, 70, 71 bear against the inner surface.
  • the electrolyte liquid wets the sponge body 76 and connects it conductively to the pot-like pressure plate 75.
  • This is in turn conductively connected to the electrolyte inlet line connection piece 77, 78, 79, 80, which via a clamping contact 90 on the negative pole of the power supply (not shown).
  • the removed surface material is taken up in the sponge body 76.
  • the excess electrolyte liquid that runs out of the sponge body remains in the cavity, which is stretched between the housing ring 42 and the rim of the pot-like pressure plate 75 by the inner wall 65 of the workpiece to be electropolished, the annular seal 73 lying against it and the annular disk-shaped rubber seal 74.
  • the suction pressure can be set so that air is also sucked in under the annular seal 73 which bears against the inner wall to be electropolished. This reliably prevents electrolyte liquid from escaping in significant quantities.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Cleaning In General (AREA)
EP84114684A 1983-12-14 1984-12-03 Dispositif pour le polissage électrolytique des surfaces intérieures d'objets cylindriques creux Expired - Lifetime EP0146833B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833345278 DE3345278A1 (de) 1983-12-14 1983-12-14 Vorrichtung zum elektropolieren der innenoberflaeche von hohlzylindrischen koerpern
DE3345278 1983-12-14

Publications (3)

Publication Number Publication Date
EP0146833A2 true EP0146833A2 (fr) 1985-07-03
EP0146833A3 EP0146833A3 (en) 1987-05-13
EP0146833B1 EP0146833B1 (fr) 1990-08-01

Family

ID=6216943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114684A Expired - Lifetime EP0146833B1 (fr) 1983-12-14 1984-12-03 Dispositif pour le polissage électrolytique des surfaces intérieures d'objets cylindriques creux

Country Status (8)

Country Link
US (1) US4634511A (fr)
EP (1) EP0146833B1 (fr)
JP (1) JPS60146626A (fr)
CA (1) CA1229067A (fr)
DE (2) DE3345278A1 (fr)
ES (1) ES8605873A1 (fr)
SU (1) SU1491347A3 (fr)
UA (1) UA5973A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2610137A1 (fr) * 1987-01-28 1988-07-29 Electricite De France Systeme de decontamination des tuyauteries primaires et de la boite a eau d'un generateur de vapeur de centrale nucleaire
FR2610758A1 (fr) * 1987-02-09 1988-08-12 Electricite De France Dispositif d'exploration et/ou de traitement de surface d'un sas cylindrique a faible rayon de courbure
WO1990004053A1 (fr) * 1988-10-10 1990-04-19 Siemens Aktiengesellschaft Dispositif d'electropolissage de surfaces
US5135632A (en) * 1988-10-10 1992-08-04 Siemens Aktiengesellschaft Apparatus for electropolishing surfaces
WO1998022953A1 (fr) * 1996-11-15 1998-05-28 Babcock Rosyth Defence Limited Limitation de la contamination de la surface d'un element metallique par des radionucleides
WO2017220633A1 (fr) * 2016-06-21 2017-12-28 Extrude Hone Gmbh Procédé et dispositif de polissage électrolytique et procédé de fabrication d'une cathode

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4690737A (en) * 1986-06-10 1987-09-01 Cation Corporation Electrochemical rifling of gun barrels
FR2607421B1 (fr) * 1986-12-01 1989-03-24 Electricite De France Dispositif d'exploration et/ou de traitement d'une surface lisse courbe
DE3735840A1 (de) * 1987-10-23 1989-05-03 Hoefer & Bechtel Gmbh Einrichtung zum reinigen von dichtflaechen eines reaktordruckbehaelterdeckels
EP0352594B1 (fr) * 1988-07-28 1993-05-05 Siemens Aktiengesellschaft Procédé d'électropolissage pour la décontamination
FR2641003B1 (fr) * 1988-12-23 1991-04-05 Tech Milieu Ionisant
JPH0794090B2 (ja) * 1989-11-01 1995-10-11 工業技術院長 小径管内面の電解砥粒超鏡面仕上げ方法
DE4017998A1 (de) * 1990-06-05 1992-01-09 Siemens Ag Verfahren und vorrichtung zur dekontamination radioaktiv kontaminierter oberflaechen
US5409593A (en) * 1993-12-03 1995-04-25 Sifco Industries, Inc. Method and apparatus for selective electroplating using soluble anodes
US6217726B1 (en) * 1997-05-22 2001-04-17 Therma Corporation, Inc. Tube inner surface electropolishing device with electrolyte dam
CN113878915B (zh) * 2021-10-09 2023-12-08 安徽永正密封件有限公司 一种用于管道多角度承插连接的橡胶密封胶圈的加工工艺

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4330381A (en) * 1978-09-18 1982-05-18 Jumer John F Method for containerless portable electro-polishing
EP0074463A1 (fr) * 1981-09-12 1983-03-23 Kernforschungszentrum Karlsruhe Gmbh Procédé et dispositif pour le nettoyage de parois intérieures des systèmes tubulaires métalliques par polissage électrolytique à l'aide d'électrodes agitées

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4001094A (en) * 1974-09-19 1977-01-04 Jumer John F Method for incremental electro-processing of large areas
JPS54153092U (fr) * 1978-04-18 1979-10-24
US4190513A (en) * 1978-09-18 1980-02-26 Jumer John F Apparatus for containerless portable electro-polishing
JPS5593447U (fr) * 1978-12-22 1980-06-28
US4304654A (en) * 1980-10-24 1981-12-08 Sifco Industries, Inc. Apparatus for electroplating

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4330381A (en) * 1978-09-18 1982-05-18 Jumer John F Method for containerless portable electro-polishing
EP0074463A1 (fr) * 1981-09-12 1983-03-23 Kernforschungszentrum Karlsruhe Gmbh Procédé et dispositif pour le nettoyage de parois intérieures des systèmes tubulaires métalliques par polissage électrolytique à l'aide d'électrodes agitées

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2610137A1 (fr) * 1987-01-28 1988-07-29 Electricite De France Systeme de decontamination des tuyauteries primaires et de la boite a eau d'un generateur de vapeur de centrale nucleaire
EP0281433A2 (fr) * 1987-01-28 1988-09-07 Electricite De France Système d'intervention sur les tuyauteries primaires et la boîte à eau d'un générateur de vapeur centrale nucléaire
EP0281433A3 (en) * 1987-01-28 1988-09-21 Electricite De France Service National Working system for primary pipes and water-chamber in a vapour generator of a nuclear plant
US4984598A (en) * 1987-01-28 1991-01-15 Electricite De France (Service National) System for working on the primary pipework and water box of a nuclear power station steam generator
EP0479344A2 (fr) * 1987-01-28 1992-04-08 Electricite De France Système d'intervention sur les parois internes de la boîte à eau d'un générateur de vapeur de centrale nucleaire
EP0479344A3 (en) * 1987-01-28 1992-09-23 Electricite De France Service National Working system for internal walls of the water-chamber in a vapour generator of a nuclear plant
FR2610758A1 (fr) * 1987-02-09 1988-08-12 Electricite De France Dispositif d'exploration et/ou de traitement de surface d'un sas cylindrique a faible rayon de courbure
WO1990004053A1 (fr) * 1988-10-10 1990-04-19 Siemens Aktiengesellschaft Dispositif d'electropolissage de surfaces
US5135632A (en) * 1988-10-10 1992-08-04 Siemens Aktiengesellschaft Apparatus for electropolishing surfaces
WO1998022953A1 (fr) * 1996-11-15 1998-05-28 Babcock Rosyth Defence Limited Limitation de la contamination de la surface d'un element metallique par des radionucleides
WO2017220633A1 (fr) * 2016-06-21 2017-12-28 Extrude Hone Gmbh Procédé et dispositif de polissage électrolytique et procédé de fabrication d'une cathode

Also Published As

Publication number Publication date
ES538635A0 (es) 1986-01-16
US4634511A (en) 1987-01-06
UA5973A1 (uk) 1994-12-29
DE3482871D1 (de) 1990-09-06
EP0146833B1 (fr) 1990-08-01
JPH0547327B2 (fr) 1993-07-16
SU1491347A3 (ru) 1989-06-30
CA1229067A (fr) 1987-11-10
EP0146833A3 (en) 1987-05-13
ES8605873A1 (es) 1986-01-16
DE3345278A1 (de) 1985-06-27
JPS60146626A (ja) 1985-08-02

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