FR2631114A1 - Devices intended for taking impressions - Google Patents

Devices intended for taking impressions Download PDF

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Publication number
FR2631114A1
FR2631114A1 FR8805900A FR8805900A FR2631114A1 FR 2631114 A1 FR2631114 A1 FR 2631114A1 FR 8805900 A FR8805900 A FR 8805900A FR 8805900 A FR8805900 A FR 8805900A FR 2631114 A1 FR2631114 A1 FR 2631114A1
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France
Prior art keywords
tube
tool
tubes
plug
intended
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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.)
Withdrawn
Application number
FR8805900A
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French (fr)
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to FR8805900A priority Critical patent/FR2631114A1/en
Publication of FR2631114A1 publication Critical patent/FR2631114A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/026—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/24—Feeding the material into the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/26—Moulds or cores
    • B29C39/32—Moulds or cores with joints or the like for making the mould impervious
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B1/00—Measuring instruments characterised by the selection of material therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/40—Test specimens ; Models, e.g. model cars ; Probes

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

Tool intended for taking impressions inside the bend 917 of steam generator U-tubes, composed of two similar elements: - on one side is placed a plug 910 provided with seals; it is surmounted by a flexible insert 911, and connected to the outside of the tube by an umbilical cable 912 for supplying resins. The base of this umbilical cable comprises a leaktight valve 913; - on the other side, a similar plug 914 is provided with expandable (or inflatable) seals 915. The plug has an umbilical cable which bears on a casing 916, which is leaktight, on the tube plate of the steam generator, and connected to a vacuum pumping unit. After evacuating the U-tube, the inflatable seal 915 is closed, then, by opening the valve 913, resins are injected.

Description

DISPOSITIFS DESTINES A PRENDRE DES EMPREINTES
La prise d'empreinte consiste à appliquer un produit fluide ou malléable sur une surface qu'il épouse pour en refléter les accidents, la rugosité, etc...DEVICES FOR TAKING IMPRESSIONS
Taking an impression consists in applying a fluid or malleable product to a surface which it marries to reflect accidents, roughness, etc.

Ce procédé est utilise depuis des decades pour analyser localement des composants de grandes dimensions qui ne sauraient être deplaces. C'est ainsi qu'en l'absence de pression, on met en contact des fluides ou des mastics sur une surface. Par vulcanisation, ces fluides constituent des repliques tenaces, souples ou rigides selon les melanges utilisés.This process has been used for decades to locally analyze large components that cannot be moved. Thus in the absence of pressure, it puts in contact fluids or sealants on a surface. By vulcanization, these fluids constitute stubborn, flexible or rigid replicas depending on the mixtures used.

Elles prennent l'aspect de la structure micrographique de la surface de la piece examinée. Puis la replique est examinee visuellement, par microscope, par macrographie, sous banc de metrologie etc.. avec des précisions qui atteignent le centieme de millimètre.They take on the appearance of the micrographic structure of the surface of the part examined. Then the replica is examined visually, by microscope, by macrography, under metrology bench etc. with details reaching the hundredth of a millimeter.

Elles constituent des archives de contrôle de l'état d'une piece a un moment donne.They constitute archives for checking the condition of a part at a given time.

La présente invention concerne un dispositif destiné a realiser des empreintes, dans des tubes qui peuvent être de petits diametres et a de grandes distances dans des zones inaccessibles.The present invention relates to a device intended for making impressions, in tubes which can be of small diameters and at great distances in inaccessible areas.

Elle concerne notamment un dispositif de prise de repliques des tubes de generateurs de vapeur (GV) , soit nus, soit equipes de manchettes qui y sont installées comme moyen de reparation provisoire.It relates in particular to a device for taking replicas of steam generator tubes (SGS), either bare or fitted with cuffs which are installed there as a means of temporary repair.

La -figure 1 situe les boites a eau des echangeurs (GV) des reacteurs à eau pressurisée.-Figure 1 locates the water boxes of the exchangers (GV) of pressurized water reactors.

La boite a eau du GV est une demi sphere formee de deux chambres 901 séparées par une plaque de partition verticale 904; ces chambres sont surplombées par une plaque tubulaire (PT) 902 d'où partent et aboutissent les tubes echangeurs 903 montes en epingle. Chaque chambre (bol) possede deux ouvertures: le trou d'homme d'acces 905 de diametre 400mm., et la tubulure 906 du circuit primaire. The GV water box is a half sphere formed by two chambers 901 separated by a vertical partition plate 904; these chambers are overhung by a tubular plate (PT) 902 from which the exchanger tubes 903 mounted in pins leave and end. Each chamber (bowl) has two openings: the access manhole 905 with a diameter of 400mm., And the tubing 906 of the primary circuit.

La figure 2 indique le dispositif d'injection des résines, servant également a l'extraction de l'empreinte.Figure 2 shows the resin injection device, also used for extracting the impression.

La figure 3 indique une palette mettant en oeuvre l'outil d'injection, qui est embarquée sur un télémanipulateur assurant le positionnement par rapport au tube choisi.Figure 3 shows a pallet using the injection tool, which is on board a remote manipulator ensuring positioning relative to the chosen tube.

La figure 4 indique le dispositif d'in#jection permettant la prise d'empreintes de la partie haute des tubes en U (crosse).Figure 4 shows the injection device for taking impressions of the upper part of the U-shaped tubes (stock).

Sur la figure 2, on voit le bouchon 950 rigide pourvu de joints d'étanchéité 952. En sa partie supérieur est fixé un ressort a boudins 953 qui, après injection et vulcanisation de résines, sera piègé dans l'empreinte. Il permet de moyenner l'allongement de l'empreinte sous un effort limité et d'amincer progressivement l'empreinte pour son extraction du tube.In Figure 2, we see the rigid plug 950 provided with seals 952. In its upper part is fixed a coil spring 953 which, after injection and vulcanization of resins, will be trapped in the imprint. It makes it possible to average the lengthening of the imprint under a limited effort and to gradually thin the imprint for its extraction from the tube.

En dessous du bouchon est connecté un ombilic 954 (flexible ou rigide), destiné a injecter les résines dans le tube, au dessus du niveau des joints d'étanchéité 952. Cet ombilic est relié a un générateur de résines.Below the plug is connected an umbilicus 954 (flexible or rigid), intended to inject the resins into the tube, above the level of the seals 952. This umbilicus is connected to a generator of resins.

La partie d'ombilic pénétrant a l'intérieur du tube GV est de préférence centrée dans le tube, par des lamelles ou dispositifs analogues 955.The navel part penetrating inside the tube GV is preferably centered in the tube, by strips or similar devices 955.

Eventuellement, une butée/détrompeur 956 est placée sur l'ombilic, limitant mécaniquement la longueur d'ombilic introduit dans le tube.Optionally, a 956 stop / key is placed on the navel, mechanically limiting the length of navel introduced into the tube.

La figure 3 schématise un télémanipulateur 960 supportant une palette 961 mettant en oeuvre l'outil de prise d'empreinte. Cette palette est constituée d'un entraineur-tireur a galets 962 pour l'introduction et l'extraction de l'outil et de la réplique.Figure 3 shows schematically a remote manipulator 960 supporting a pallet 961 using the impression taking tool. This pallet consists of a roller puller 962 for the introduction and the extraction of the tool and the replica.

La butée/détrompeur 956 vient en appui sur la palette 962, de facon à limiter l'engagement de l'outil dans le tube, mais aussi pour orienter l'outil par rapport au télémanipulateur. Cette référence permet de saisir l'orientation spatiale des défauts relevés sur l'empreinte.The 956 stop / keying point comes to bear on the pallet 962, so as to limit the engagement of the tool in the tube, but also to orient the tool relative to the remote manipulator. This reference makes it possible to enter the spatial orientation of the defects noted on the imprint.

De plus, il est envisageable d'insérer l'ombilic d'alimentation en fluides dans une gaine concentrique isolante 963, depuis le générateur de résines jusque la butée 956. Ceci peut apporter des gains appréciables sur les astreintes de vulcanisation des résines. In addition, it is conceivable to insert the umbilicus for supplying fluids into an insulating concentric sheath 963, from the resin generator to the stop 956. This can bring appreciable gains on the vulcanization strain of the resins.

Sur la figure 4, on voit le montage de l'outil convenant a la prise d'empreintes des petits cintres 966 (partie haute du tube en U).In Figure 4, we see the mounting of the tool suitable for taking impressions of small hangers 966 (upper part of the U-shaped tube).

Il est nécessaire d'une part de réduire la longueur de l'empreinte, d'autre part d'éviter un piegeage d'air au haut de la "crosse" 967 du tube U.It is necessary on the one hand to reduce the length of the imprint, on the other hand to avoid an air trapping at the top of the "butt" 967 of the tube U.

Sur l'une des branches on place l'outil 950 défini antérieurement, a ceci pres que l'extrémité de l'ombilic d'alimentation est pourvue d'une vanne étanche 968.On one of the branches, the previously defined tool 950 is placed, except that the end of the supply navel is provided with a sealed valve 968.

Dans l'autre branche est introduit un bouchon 969 spécial, pourvu de joints gonfables ou expansables 971. Il est supporté par un bottier 970 fixé de façon étanche sur la plaque tubulaire du GV. Ce bottier est connecté a une pompe a vide. In the other branch is introduced a special plug 969, provided with inflatable or expandable seals 971. It is supported by a casing 970 fixed in leaktight manner on the tube plate of the SG. This bootmaker is connected to a vacuum pump.

La vanne 968 étant fermée et les joints 971 "dégonflés", le tube GV est mis sous vide, puis: a) le joint 971 est expansé (ou gonflé) de façon à clore la chambre (le tube) qui sera remplie de résines, b) la vanne 968 est ouverte, et les résines sont injectées au travers de l'outil 950 dans la chambre. L'empreinte occupe tous le volume sous vide, sans risque de piéger des bulles d'air.The valve 968 being closed and the seals 971 "deflated", the GV tube is placed under vacuum, then: a) the seal 971 is expanded (or inflated) so as to close the chamber (the tube) which will be filled with resins, b) the valve 968 is open, and the resins are injected through the tool 950 into the chamber. The impression takes up all the volume under vacuum, without the risk of trapping air bubbles.

c) apres vulcanisation l'extraction de l'empreinte s'effectue par traction sur l'ombilic d'injection, qui contient lui-même des résines vulcanisées. c) after vulcanization, the impression is extracted by traction on the injection navel, which itself contains vulcanized resins.

Claims (1)

REVENDICATIONS Revendication 1:Claim 1: Outil destiné à prendre, à partir de résines fluides, des empreintes platiques à l'intérieur de tubes, qui constituent des archives de contrôle de l'état de surface des tubes dans des zones inacessibles; outil particulièrement destiné à l'examen de tubes de générateurs de vapeur (GV), caractérisé en ce qu'il s'agit d' outil Jetable, que notamment il possède un noyau central 950 sur lequel sont fixés: a) un joint d'étanchéité 952 venant stappliquer contre la paroi interne du tube, b) un ressort 953 en boudin élastique qui surmonte ce noyau; ressort qui est englobé dans la résine, c) un ombilic 954 (flexible ou rigide) fixé en dessous du noyau central, destiné à injecter les résines fluides dans le tube, au dessus du noyau central. Cet ombilic est relié à un générateur de résines.Tool intended for taking, from fluid resins, plastic imprints inside tubes, which constitute archives for checking the surface condition of tubes in inaccessible areas; tool particularly intended for the examination of tubes of steam generators (GV), characterized in that it is a Disposable tool, that in particular it has a central core 950 on which are fixed: a) a gasket tightness 952 coming to be applied against the internal wall of the tube, b) a spring 953 in elastic coil which surmounts this core; spring which is included in the resin, c) an umbilicus 954 (flexible or rigid) fixed below the central core, intended to inject the fluid resins into the tube, above the central core. This umbilicus is connected to a generator of resins. La partie d'ombilic pénétrant à l'intérieur du tube GV est de préférence centré dans le tube, par des lamelles ou dispositifs analogues 955.The umbilical part penetrating inside the tube GV is preferably centered in the tube, by strips or similar devices 955. Revendication 2:Claim 2: Outil selon la revendication 1, caractérisé en ce l'ombilic 954 porte une butée/d'appui 956 qui vient s'arrèter sur une palette 961 placée sur un télémanipulateur destiné à positionner et à orienter la prise d'empreintes par rapport au réseau dtimplantation des tubes de GV.Tool according to claim 1, characterized in that the umbilicus 954 carries a stop / support 956 which comes to stop on a pallet 961 placed on a remote manipulator intended to position and orient the taking of impressions relative to the implantation network SGS tubes. Revendication 3:Claim 3: Outil selon la revendication 1, destiné à la prise d'empreintes des crosses 367 des tubes, caractérisé en ce que l'on place dans l'une des branches du tube l'outil 950 selon la revendication 1, muni d'une vanne d'étanchéité 968 à la base de son omlibic d'injection; caractérisé en ce que l'on place dans l'autre branche du tube un bouchon 969 expansible ou gonflable, supporté par un conduit; et que ce conduit vient en assise sur un bottier 970 plaqué de façon étanche sur la plaque tubulaire.Tool according to claim 1, intended for taking impressions of the sticks 367 of the tubes, characterized in that the tool 950 according to claim 1, fitted with a valve, is placed in one of the branches of the tube. seal 968 at the base of its injection omlibic; characterized in that an expandable or inflatable plug 969, supported by a conduit, is placed in the other branch of the tube; and that this conduit sits on a shoemaker 970 tightly plated on the tubular plate. Ce bottier est connecté à une pompe à vide. This bootmaker is connected to a vacuum pump. Revendication 4:Claim 4: Outil selon la revendication 1 précédente, caractérisée en ce qu'une gaine concentrique isolante 963 est installée coaxiale à l'ombilic 954; depuis le générateur d'injection des résines jusqu'à la butée 956 en appui sur la palette 962 ou ,sur la plaque tubulaire.Tool according to claim 1, characterized in that a concentric insulating sheath 963 is installed coaxial with the umbilicus 954; from the resin injection generator to the stop 956 pressing on the pallet 962 or, on the tube plate. Revendication 5: Claim 5: Outil selon la revendication 3 où le dispositif de prise de répliques 950 est placé proche de la partie haute du tube GV, caractérisé en ce que un composant complémentaire, indépendant, est placé dans l'autre branche du tube du GV à hauteur voulue.Tool according to Claim 3, in which the replica taking device 950 is placed close to the upper part of the GV tube, characterized in that a complementary, independent component is placed in the other branch of the GV tube at the desired height. Ce composant est un bouchon 969 pourvu d'un joint d'étanchéité expansible gonflable 971. Il est pourvu aussi d'une canalisation destinée à assurer le vide dans la chambre ainsi constituée dans le tube entre le bouchon d'injection 950 et le bouchon d'obturation 971.This component is a plug 969 provided with an expandable inflatable seal 971. It is also provided with a pipe intended to ensure vacuum in the chamber thus formed in the tube between the injection plug 950 and the plug d shutter 971. Cette disposition permet une purge de l'air, qui autrement serait piégée en haut du tube lors de l'injection. This arrangement allows an air purge, which would otherwise be trapped at the top of the tube during injection.
FR8805900A 1988-05-03 1988-05-03 Devices intended for taking impressions Withdrawn FR2631114A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8805900A FR2631114A1 (en) 1988-05-03 1988-05-03 Devices intended for taking impressions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8805900A FR2631114A1 (en) 1988-05-03 1988-05-03 Devices intended for taking impressions

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FR2631114A1 true FR2631114A1 (en) 1989-11-10

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FR8805900A Withdrawn FR2631114A1 (en) 1988-05-03 1988-05-03 Devices intended for taking impressions

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003097321A1 (en) * 2002-05-15 2003-11-27 Swagelok Company Tool and method to create an accurate cast of the internal form of a component
CN111288878A (en) * 2020-02-12 2020-06-16 上海派腾特商务咨询有限公司 Detection device is used in pipe fitting production

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2358802A1 (en) * 1973-11-26 1975-05-28 Kraftwerk Union Ag PROCEDURE FOR IDENTIFYING WALL DAMAGE INSIDE THE HEAT EXCHANGER TUBES
GB2155390A (en) * 1984-03-13 1985-09-25 United Kingdom Automic Energy Method and apparatus for testing tube surfaces
US4616987A (en) * 1985-06-17 1986-10-14 Vetco Offshore Industries, Inc. Internal bore impression tool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2358802A1 (en) * 1973-11-26 1975-05-28 Kraftwerk Union Ag PROCEDURE FOR IDENTIFYING WALL DAMAGE INSIDE THE HEAT EXCHANGER TUBES
GB2155390A (en) * 1984-03-13 1985-09-25 United Kingdom Automic Energy Method and apparatus for testing tube surfaces
US4616987A (en) * 1985-06-17 1986-10-14 Vetco Offshore Industries, Inc. Internal bore impression tool

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
N.T.I.S. TECH NOTES, juillet 1987, page 0654, Springfield, VA., US; "Taking impressions of hidden cavity walls" *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003097321A1 (en) * 2002-05-15 2003-11-27 Swagelok Company Tool and method to create an accurate cast of the internal form of a component
CN111288878A (en) * 2020-02-12 2020-06-16 上海派腾特商务咨询有限公司 Detection device is used in pipe fitting production
CN111288878B (en) * 2020-02-12 2023-11-24 青岛泽昊汽车配件有限公司 Detection device is used in pipe fitting production

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