EP0101362B1 - Verfahren zum hermetischen Verschliessen eines Behälters durch Schrumpfpassung zweier konischer Flächen und Behalter mit Verschluss zur Ausführung des Verfahrens - Google Patents

Verfahren zum hermetischen Verschliessen eines Behälters durch Schrumpfpassung zweier konischer Flächen und Behalter mit Verschluss zur Ausführung des Verfahrens Download PDF

Info

Publication number
EP0101362B1
EP0101362B1 EP19830401567 EP83401567A EP0101362B1 EP 0101362 B1 EP0101362 B1 EP 0101362B1 EP 19830401567 EP19830401567 EP 19830401567 EP 83401567 A EP83401567 A EP 83401567A EP 0101362 B1 EP0101362 B1 EP 0101362B1
Authority
EP
European Patent Office
Prior art keywords
opening
stopper
container
plug
arrangement
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
Application number
EP19830401567
Other languages
English (en)
French (fr)
Other versions
EP0101362A1 (de
Inventor
Jean Geffroy
Maurice Moulin
Bernard Liot
Jean Vivien
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.)
Novatome SA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Novatome SA
Commissariat a lEnergie Atomique CEA
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 Novatome SA, Commissariat a lEnergie Atomique CEA filed Critical Novatome SA
Publication of EP0101362A1 publication Critical patent/EP0101362A1/de
Application granted granted Critical
Publication of EP0101362B1 publication Critical patent/EP0101362B1/de
Expired legal-status Critical Current

Links

Images

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
    • G21F5/00—Transportable or portable shielded containers
    • G21F5/06—Details of, or accessories to, the containers
    • G21F5/12—Closures for containers; Sealing arrangements

Definitions

  • the subject of the present invention is a method of sealing a sealed enclosure-plug assembly by shrinking two conical surfaces and an enclosure-plug assembly for implementing this method.
  • Closure devices are also known in which the metal-metal seal is ensured by a fusible joint. In this case, the seal is good, but the mechanical strength of the seal is low. In addition, fusible metal is entrained when the plug is removed, which is troublesome.
  • Document EP-AL -0 061400 not published on the priority date of this application, describes a method and a device for sealing and opening a container-stopper assembly, the container being closed by shrinking hot the upper edge of the cylindrical opening of the container on the cylindrical plug and the opening being obtained by rapid heating of the upper edge of the opening of the container followed by the extraction of the plug.
  • the plug is extracted by producing a new relative expansion between the plug and the opening.
  • the axial position of the plug in the opening is predetermined by adjusting an axial stop between the plug and the opening and the adjustment of the stop is carried out by axial machining of a flange.
  • the subject of the invention is also an enclosure-stopper assembly according to claim 4.
  • the two cones are made with the same metal or with metals having the same coefficient of expansion in order to ensure an appropriate and lasting tightening during the operation of the enclosure during which the temperature of the closure device varies. It is also necessary that the surfaces of the cones are machined with care, and in particular that they have no longitudinal scratches. Of course, it is necessary that the tightening stresses remain in the range of the elastic limit of the metal used for the expected operating temperature.
  • the male conical bearing can be produced either on the plug or on the opening, which gives several alternative embodiments of the device of the invention.
  • the reference 2 designates the wall of a sealed enclosure.
  • This sealed enclosure can be fixed or mobile. It may for example be a container placed in a transport castle used to transport the irradiated fuel assemblies from the nuclear reactor to the reprocessing plant.
  • An enclosure of this type must include a closure device meeting very strict safety and sealing requirements. This device must be capable of withstanding high temperature and pressure.
  • the closure device of the invention shown in Figure 1 uses the tightening properties of the male-female cones of slight slope.
  • the closure device consists of two parts: a ferrule 4 secured to the wall of the sealed enclosure which delimits an opening 6 which gives access to the interior of the enclosure.
  • the opening 6 is closed by a plug 8 inserted inside the shell 4.
  • Tapered surfaces of low taper are produced on the shell 8 and on the plug.
  • a female conical bearing has been produced in the shell, while the plug 8 has a complementary male conical bearing.
  • other combinations are possible, as will be described later.
  • the closure of the sealed enclosure by means of the device of the invention shown in Figure 1 is obtained in the following manner.
  • the ferrule 4 is heated, which has the effect of expanding it and increasing the diameter of the female conical bearing 4a to the position 4'a shown in broken lines. It is then possible to introduce the plug 8 without difficulty inside the ferrule 4.
  • the ferrule cools, which has the effect of contracting it and therefore of obtaining the desired tightening effect. This provides a tight seal and having good mechanical strength.
  • the plug is removed in reverse, either by heating the ferrule 4, or by cooling the plug 8 to contract it by means of liquefied gas or by any other similar means.
  • the plug 8 has a housing 8b for a gripping head 14 which allows it to be handled conveniently and from a distance.
  • the positioning of the plug 8 relative to the ferrule 4 can be easily obtained by means of a flange 8c of the plug coming to bear on an annular bearing 4c of the ferrule.
  • the precise positioning, in translation, of the plug can be ensured by the mechanism for positioning the latter using a stop, adjustable or not, coming into contact with the plane surface of the ferrule, or even by precise control of the travel of this mechanism. If necessary, the variation of this stroke makes it possible to ensure closings with tightenings of variable value.
  • FIG 2 an alternative embodiment of the device of Figure 1.
  • the shell 4 has a female conical bearing and the plug a male conical bearing.
  • the slope of the cone has been reversed.
  • the female conical bearing 4a widens towards the inside of the enclosure. It is obvious that in this case, it is necessary to further dilate the ferrule 4 to introduce the plug, since the smallest diameter of the conical seat 4a must become greater, at the time of the introduction of the plug, at most large diameter of the male conical bearing 8a.
  • the plug 8 may include a flange 8c which comes into contact at the time of tightening with an annular surface 4c of the ferrule 4, which makes it possible to obtain a precise tightening without having to worry about precisely controlling the temperature difference between the ferrule and the cap.
  • FIG. 3a There are shown in Figures 3a and 3b two other alternative embodiments of a sealed closure device for an enclosure.
  • the plug 8 which has a female conical bearing in which the ferrule is received.
  • the diameter of the female conical bearing tapers towards the bottom of the plug. This embodiment can be compared to that of FIG. 1.
  • the assembly and disassembly of the plug 8 is carried out in a similar manner to that of the plug of Figures 1 and 2.
  • annular bearing 4c which, in these embodiments, is in the form of a shoulder of the ferrule 4.
  • the annular bearing 4c cooperates with the flange 8c of the plug 8 ( Figures 3a and 3b) to stop in translation the plug relative to the ferrule and obtain as explained above a suitable tightening of the two parts once the temperature balance obtained.
  • FIG. 4a shows an assembly for machining a plug 8, and in particular for calibrating the flange 8c which allows the positioning of the plug relative to the shell at the time of assembly.
  • the reference 16 designates the jaws of a lathe in which the plug 8 is tightened.
  • a standard ferrule 18 is then presented on the plug 8 and fixed thereon.
  • a dressing tool 30 comprising a roller, is then brought to bear on the face 10 of the standard ferrule.
  • the tool advance ensures the calibration of the cap flange.
  • FIG. 4b shows the calibration of the annular bearing surface 4c of the ferrule 4 by the installation of a standard plug 20 having a face 20a for the support of a roller integral with the dressing tool 30.
  • FIG. 5 shows a second embodiment of a closure device of the invention.
  • This device comprises two plugs arranged one behind the other. This produces a primary seal by means of the plug 8 'and a secondary seal by means of the plug 8 ".
  • the diameter of the conical surface of the plug 8' increases with increasing movement. moves away from the flange 8'c, which ensures a very high resistance of this plug to axial displacement, for example under the effect of shocks coming for example from parts contained inside the enclosure during transport.
  • FIG. 6 shows a third embodiment of the invention.
  • the tapered bearings both male and female, have been split into several tapered bearings 4 ,, 4 2 , 4 3 etc. for ferrule 4 and 8 1 , 8 2 , 8 3 etc. for plug 8.
  • Two consecutive conical bearing surfaces are separated by a heel.
  • the conical surfaces 4, and 4 2 there is the heel 31, and between the conical surfaces 8, and 8 2 , there is the heel 32.
  • This embodiment has the advantage of allowing a large length 1 of the conical bearing surfaces relative to the diameter 34 of the opening.
  • the plug is easier to set up and remove while ensuring a better seal and better mechanical resistance.
  • heels 31 and 32 have a safety role. They hold the plug in place in case it comes to move, for example under the effect of a shock coming from inside the enclosure and directed towards the outside.
  • Figure 7 a variant of the embodiment of Figure 6 which also includes tapered bearings which have been divided into several conical bearings.
  • This embodiment corresponds to the case of a reverse cone. It has the same advantages as the embodiment of Figure 6.
  • the fact of reducing the ratio of the length of the spans relative to the diameter of the opening has a greater advantage since, as mentioned above, it is necessary to dilate the flange or further contract the plug to introduce into each other due to the reverse taper.
  • the heels do not play a safety role as is the case in the embodiment of FIG. 6, but it is the conical bearings themselves which play this role because the reverse taper ensures better immobilization in translation of the plug relative to the ferrule.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Claims (5)

1. Verfahren zum hermetischen Verschließen und zum Öffnen einer BehälterNerschluß-Anordnung, wobei der Behälter eine Öffnung (6) aufweist und der Verschluß (8) und die Öffnung (6) eine übereinstimmende, geringe Konizität in der Größenordnung von 1 bis 2 Grad haben, wobei dieses Verfahren die folgenden aufeinanderfolgenden Schritte aufweist :
a) man erzeugt ein thermisches Ungleichgewicht zwischen dem Verschluß und den Wänden der Öffnung, um eine relative Wärmedehnung der Öffnung gegenüber dem Verschluß hervorzurufen,
b) man führt den Verschluß in die Öffnung bis in eine vorbestimmte axiale Position ein, die nach der Wiederherstellung des thermischen Gleichgewichts einer vorbestimmten Klemmung entspricht,
c) man stellt das thermische Gleichgewicht zwischen dem Verschluß und der Öffnung wieder her,
d) wobei man das Herausziehen des Verschlusses in der Weise erzielt, daß man eine erneute relative Wärmedehnung zwischen dem Verschluß und der Öffnung erzeugt.
2. Verfahren nach Anspruch 1, bei welchem die axiale Position des Verschlusses (8) in der Öffnung (6) durch Einstellung eines axialen Anschlages zwischen dem Verschluß und der Öffnung vorbestimmt wird.
3. Verfahren nach Anspruch 2, bei welchem die Einstellung des Anschlags durch axiale Ausdrehung eines Kragens (8c) erzielt wird.
4. BehälterNerschluß-Anordnung, bei der der Behälter eine Öffnung (6) aufweist, der Verschluß (8) und die Öffnung (6) eine übereinstimmende, schwache Konizität in der Größenordnung von 1 bis 2 Grad aufweisen, der Verschluß (8) vor dem Vereinigen mit dem Behälter (6) einen Durchmesser aufweist, der leicht größer als jener des Behälters (6) ist, der Verschluß (8) und die Wände der Öffnung (6) axiale Anschlagelemente aufweisen, die von einen Kragen (8c), der an einem der Teile ausgebildet ist, und von einer dazu passenden ringförmigen Schulter (4c) gebildet sind, die an dem anderen Teil ausgebildet ist, und der Verschluß (8) und die Wände der Öffnung (6) aus Materialien bestehen, die im wesentlichen gleiche Wärmeausdehnungskoeffizienten haben. um den Klemmeffekt aufrechtzuerhalten, der durch den Schrumpfeffekt zwischen der Öffnung (6) des Behälters und dem Verschluß (8) erzielt wird, wie auch die Gebrauchstemperatur sei.
5. BehälterNerschluß-Anordnung nach Anspruch 4, bei der die konischen Schultern (4a, 8a) des Verschlusses und der Öffnung in eine Mehrzahl von Konusringen gleicher Konizität unterteilt sind.
EP19830401567 1982-08-06 1983-07-28 Verfahren zum hermetischen Verschliessen eines Behälters durch Schrumpfpassung zweier konischer Flächen und Behalter mit Verschluss zur Ausführung des Verfahrens Expired EP0101362B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8213752 1982-08-06
FR8213752A FR2531404B1 (fr) 1982-08-06 1982-08-06 Procede et dispositif de fermeture etanche d'un conteneur par frettage de deux portees coniques

Publications (2)

Publication Number Publication Date
EP0101362A1 EP0101362A1 (de) 1984-02-22
EP0101362B1 true EP0101362B1 (de) 1986-12-03

Family

ID=9276693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830401567 Expired EP0101362B1 (de) 1982-08-06 1983-07-28 Verfahren zum hermetischen Verschliessen eines Behälters durch Schrumpfpassung zweier konischer Flächen und Behalter mit Verschluss zur Ausführung des Verfahrens

Country Status (4)

Country Link
EP (1) EP0101362B1 (de)
JP (1) JPH0676834B2 (de)
DE (1) DE3368142D1 (de)
FR (1) FR2531404B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102047343A (zh) * 2008-05-27 2011-05-04 阿海珐核循环公司 用于封装核废料的具有强制装配盖子的容器
CN110270828A (zh) * 2019-06-27 2019-09-24 合肥秋力鸣家具有限公司 一种卡箍装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3503641A1 (de) * 1984-07-24 1986-02-06 Nationale Genossenschaft für die Lagerung radioaktiver Abfälle - NAGRA, Baden Verfahren zum schliessen eines behaelters zur aufnahme von radioaktivem material und behaelter zur durchfuehrung des verfahrens
FR2715762B1 (fr) * 1994-02-01 1996-03-29 Transnucleaire Dispositif de fixation du fond d'un conteneur de transport et/ou stockage de matières radioactives.
DE29723511U1 (de) * 1996-04-12 1998-11-05 Siemens Ag Kanister zum Aufnehmen eines Kernreaktorbrennelements
FR2801133B1 (fr) * 1999-11-15 2002-02-15 Sogefibre Conteneur de dechets et son procede de fermeture
TWI225211B (en) 2001-02-15 2004-12-11 Ibm Security system for preventing a personal computer from being stolen or used by unauthorized people
CN102953862B (zh) * 2011-08-29 2015-07-01 广西玉柴机器股份有限公司 一种发动机圆孔密封方法及密封装置
CN104137187B (zh) * 2012-01-26 2017-07-07 阿海珐有限公司 用于在容器中气密地封装燃料棒或燃料棒区段的装置和方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348696A (en) * 1941-09-19 1944-05-09 Erie Enameling Company Method of forming tanks
FR1187666A (fr) * 1957-04-19 1959-09-15 Commissariat Energie Atomique Pièce de raccordement ou de fermeture d'une tube en matière frittée et procédé de scellement de cette pièce
US3451583A (en) * 1968-05-20 1969-06-24 Lee Co Expandable sealing plug
BE755271A (fr) * 1969-08-25 1971-02-25 Raychem Corp Raccord metallique pouvant reprendre sa forme a la chaleur
JPS51129562A (en) * 1975-05-02 1976-11-11 Kawasaki Heavy Ind Ltd The joint method of a rotary cylinder and an edge part elemen
JPS5221558A (en) * 1975-08-11 1977-02-18 Mitsubishi Heavy Ind Ltd Fit method of a shaft and a boss
US4209420A (en) * 1976-12-21 1980-06-24 Asea Aktiebolag Method of containing spent nuclear fuel or high-level nuclear fuel waste
JPS55119206A (en) * 1979-03-08 1980-09-12 Nippon Steel Corp Method of connecting joint of steel structure or like
FR2472819A3 (fr) * 1979-11-08 1981-07-03 Kernforschungsz Karlsruhe Dispositif de fermeture pour conteneur de stockage rempli de verre fondu radioactif
DE2952168C2 (de) * 1979-12-22 1982-09-02 Transnuklear Gmbh, 6450 Hanau Transport- und/oder Lagerbehälter für radioaktive Stoffe
JPS5740642U (de) * 1980-08-18 1982-03-04
FR2502379A1 (fr) * 1981-03-20 1982-09-24 Novatome Ind Procede et dispositif de fermeture etanche amovible d'un conteneur pour combustible irradie

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102047343A (zh) * 2008-05-27 2011-05-04 阿海珐核循环公司 用于封装核废料的具有强制装配盖子的容器
CN102047343B (zh) * 2008-05-27 2014-03-19 阿海珐核循环公司 用于封装核废料的具有强制装配盖子的容器
CN110270828A (zh) * 2019-06-27 2019-09-24 合肥秋力鸣家具有限公司 一种卡箍装置
CN110270828B (zh) * 2019-06-27 2020-08-04 安徽玄同机电科技有限公司 一种卡箍装置

Also Published As

Publication number Publication date
JPS59131066A (ja) 1984-07-27
FR2531404A1 (fr) 1984-02-10
EP0101362A1 (de) 1984-02-22
JPH0676834B2 (ja) 1994-09-28
DE3368142D1 (en) 1987-01-15
FR2531404B1 (fr) 1986-06-06

Similar Documents

Publication Publication Date Title
EP0101362B1 (de) Verfahren zum hermetischen Verschliessen eines Behälters durch Schrumpfpassung zweier konischer Flächen und Behalter mit Verschluss zur Ausführung des Verfahrens
FR2808068A1 (fr) Joint d'etancheite metallique
EP1772660B1 (de) Flanschverbindungsvorrichtung
FR2465942A1 (fr) Raccord pour elements tubulaires
EP0333814A1 (de) Verbindung mit auswechselbarer metallischer ringdichtung
EP0057134B1 (de) Vorrichtung zur elastischen Rohrverbindung
FR2472128A1 (fr) Dispositif d'etancheite en metal pour une fermeture soumise a un vide pousse
FR2948165A1 (fr) Ensemble de conduites coaxiales comprenant des pieces de jonction a cavites internes etanches et procede de realisation
EP0364330B1 (de) Pfropfen zum Abdichten eines Dampferzeugerrohres
EP0166286A1 (de) Abdichtungsring für ein Ventil mit drehbarem Absperrelement und Verfahren zu seiner Herstellung
EP0650789B1 (de) Giesswalze zum kontinuierlichen Giessen mit einer oder zwei Giesswalzen
EP1618324B1 (de) Fluidstromregelventilvorrichtung
FR2514099A1 (fr) Procede pour fixer un manchon a l'interieur d'un tube, notamment d'un tube de generateur de vapeur de centrale nucleaire
EP0792706B1 (de) Giesswalze zum kontinuierlichen Giessen von Metall zwischen oder auf die Giesswalzen
EP0061400B1 (de) Verfahren und Vorrichtung zum dichten Verschliessen und zum Öffnen eines Behälters für bestrahlten Kernbrennstoff
EP0019544B1 (de) Verschlussvorrichtung für einen Behälter zum Transport eines in einem Kernreaktor bestrahlten Brennstoffstabbündels
EP0428433A1 (de) Vorrichtung zum Fixieren der Steuerstabsführungsplatte im Kernreaktordruckgefäss
EP0263042A1 (de) Dichtungsvorrichtung zwischen Spindel und Ventilgehäuse und damit übereinstimmende, herausziehbare Hülse
FR2651295A1 (fr) Robinet a element spherique tournant utilisable plus particulierement pour le transport de fluides inflammables tels que les hydrocarbures.
EP0538113B1 (de) Stromleiterrollen für Elektrolyseeinrichtungen
FR3012199A1 (fr) Dispositif d’accouplement de tuyaux, notamment pour une installation cryogenique
FR2536822A1 (fr) Dispositif du type robinet a commande magnetique comportant une vis a rouleaux
FR2595427A1 (fr) Bouchon de tube demontable et etanche
FR2963959A1 (fr) Dispositf de raccordement etanche, de preference pour lanceurs spatiaux
BE551736A (de)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19840302

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 3368142

Country of ref document: DE

Date of ref document: 19870115

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19870731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19870731

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19880729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19890201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19890614

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19890713

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19900731

Ref country code: CH

Effective date: 19900731

Ref country code: BE

Effective date: 19900731

BERE Be: lapsed

Owner name: NOVATOME

Effective date: 19900731

Owner name: COMMISSARIAT A L'ENERGIE ATOMIQUE ETABLISSEMENT D

Effective date: 19900731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19920629

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940401

EUG Se: european patent has lapsed

Ref document number: 83401567.9

Effective date: 19890510

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970702

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980728

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980728