FR2773202A1 - Laminated joint seal for valve seats - Google Patents

Laminated joint seal for valve seats Download PDF

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Publication number
FR2773202A1
FR2773202A1 FR9716567A FR9716567A FR2773202A1 FR 2773202 A1 FR2773202 A1 FR 2773202A1 FR 9716567 A FR9716567 A FR 9716567A FR 9716567 A FR9716567 A FR 9716567A FR 2773202 A1 FR2773202 A1 FR 2773202A1
Authority
FR
France
Prior art keywords
seal
precise
thickness
joint seal
flexible
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
FR9716567A
Other languages
French (fr)
Other versions
FR2773202B1 (en
Inventor
Lucien Mazot
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.)
DAHER VALVES, FR
Original Assignee
Lucien Mazot
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 Lucien Mazot filed Critical Lucien Mazot
Priority to FR9716567A priority Critical patent/FR2773202B1/en
Publication of FR2773202A1 publication Critical patent/FR2773202A1/en
Application granted granted Critical
Publication of FR2773202B1 publication Critical patent/FR2773202B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing

Abstract

The laminated joint seal made up of a rigid material and a supple material is placed in the seat (10) of the valve body (6). This is compressed in position by a ring or strap (3,4) and the compression of the seal is precisely controlled by a spacer ring (5) placed between the two external faces of the joint seal.

Description

La présente invention concerne un dispositif de joint lamellaire pour siège de vanne joint à compression contrôlée des matériaux intermédiaires souples ou plastiques.The present invention relates to a lamellar seal device for a valve seat seal with controlled compression of flexible or plastic intermediate materials.

Ces joints sont suivant la Figure 1 traditionnellement réalisés par superposition alternée du type sandwich de feuilles ou rondelles métalliques 1 et de feuilles ou rondelles en matériau souple ou plastique 2 type P.T.F.E. ou graphite.These joints are according to Figure 1 traditionally produced by alternating superposition of the sandwich type of metal sheets or washers 1 and of sheets or washers of flexible or plastic material 2 type P.T.F.E. or graphite.

Par nécessité technologique de construction de la vanne l'épaisseur e de ces joints doit être précise et répétitive pour les raisons connues d'interchangeabilité ; or ces joints montés soit sur l'obturateur suivant la Figure 2, soit sur le corps de vanne suivant la Figure 3 et tenus respectivement en position soit par une bride de serrage 3 ou par un écrou de blocage 4, sont soumis à un effort d'écrasement F nécessaire pour assurer l'étanchéité entre le joint et son support 6.By technological necessity of construction of the valve the thickness e of these seals must be precise and repetitive for the known reasons of interchangeability; or these seals mounted either on the obturator according to Figure 2, or on the valve body according to Figure 3 and held respectively in position either by a clamping flange 3 or by a locking nut 4, are subjected to a force of crushing F necessary to ensure the seal between the seal and its support 6.

On réalise immédiatement la difficulté pour obtenir une épaisseur de joint e précise et constante dans le temps:
à l'usinage lors de la fabrication de joints neufs, puisque le matériau souple ou plastique 2 est par définition instable.
en utilisation après quelques heures/mois de fonctionnement puisque le matériau souple ou plastique 2 subira inévitablement un fluage f Figures 2 et 3 résultant de la compression par assemblage de la bride de serrage 3 ou de l'écrou de blocage 4, l'ensemble étant soumis à la pression et à la température du fluide circulant dans la vanne , ce fluage ayant pour conséquence une diminution dimensionnelle de l'épaisseur e du joint, provoquant un accroissement de la fuite entre l'obturateur et le joint.We immediately realize the difficulty in obtaining a joint thickness e that is precise and constant over time:
during machining during the manufacture of new seals, since the flexible or plastic material 2 is by definition unstable.
in use after a few hours / months of operation since the flexible or plastic material 2 will inevitably undergo creep f Figures 2 and 3 resulting from the compression by assembly of the clamping flange 3 or the locking nut 4, the assembly being subjected to the pressure and to the temperature of the fluid circulating in the valve, this creep having the consequence of a dimensional decrease in the thickness e of the seal, causing an increase in the leak between the shutter and the seal.

Le dispositif suivant l'invention suivant les Figures 4 et 5 permet de remédier a ces inconvénients, il comporte en effet selon une première caractéristique une virolle de contrôle d'écrasement 5 cette virolle dont l'épaisseur el est facilement usinable avec grande précision permet un dimensionnement précis de la hauteur h délimitant l'espace où seront logés les feuilles ou rondelles en matériau souple ou plastique 2 et par conséquence permettra la fabrication de joints lamellaires dont l'épaisseur e sera très précise et constante dans le temps.The device according to the invention according to FIGS. 4 and 5 makes it possible to remedy these drawbacks, it in fact comprises, according to a first characteristic, a crushing control ferrule 5 this ferrule whose thickness el is easily machinable with great precision allows a precise dimensioning of the height h delimiting the space where the sheets or washers made of flexible or plastic material 2 will be housed and consequently will allow the manufacture of lamellar joints whose thickness e will be very precise and constant over time.

Le dispositif suivant l'invention évite par ailleurs aux feuilles ou rondelles en matériau souple ou plastique 2 d'être soumises à l'effort d'écrasement F suivant les Figures 2 et 3 puisque la virolle de contrôle d'écrasement 5 assumera pleinement sa fonction, le couple de serrage de la bride de serrage 3 ou de l'écrou de blocage 4 n'ayant plus d'effet sur les épaisseurs e et el du joint.The device according to the invention also prevents the sheets or washers of flexible or plastic material 2 from being subjected to the crushing force F according to FIGS. 2 and 3 since the crushing control ferrule 5 will fully assume its function , the tightening torque of the clamping flange 3 or of the locking nut 4 no longer having an effect on the thicknesses e and el of the seal.

La virolle de contrôle d'écrasement 5 élimine mécaniquement par un ajustement précis facilement réalisable entre son diamètre intérieur d et le diamètre correspondant extérieur de la rondelle métallique intermédiaire 9 tout fluage vers l'extérieur du matériau souple ou plastique 2.  The crushing control ferrule 5 mechanically eliminates by a precise adjustment easily achievable between its inside diameter d and the corresponding outside diameter of the intermediate metal washer 9 any creep towards the outside of the flexible or plastic material 2.

La rondelle métallique supérieure 7 ou inférieure 8 peut recevoir une gorge 10 pour logement d'un joint d'étanchéité entre le joint lamellaire et l'obturateur ou le corps de vanne.The upper metal washer 7 or lower 8 can receive a groove 10 for housing a seal between the lamellar seal and the obturator or the valve body.

Les rondelles métalliques sont liées aux rondelles en matériau souple ou plastique par un procédé thermo-plastique de façon à constituer un ensemble de joint solide d'une seule pièce.The metal washers are linked to the washers of flexible or plastic material by a thermo-plastic process so as to constitute a solid joint assembly in one piece.

Le dispositif de joint suivant l'invention est particulièrement destiné aux sièges ou obturateurs de vannes devant assurer une étanchéité poussée entre l'amont et l'aval, ils peuvent avoir une portée d'étanchéité cylindrique ou conique ou elliptique. The seal device according to the invention is particularly intended for seats or valve shutters having to provide a tight seal between upstream and downstream, they may have a cylindrical or conical or elliptical sealing surface.

Claims (6)

des matériaux intermédiaires souples ou plastiques 2. flexible or plastic intermediate materials 2. REVENDICATIONS 1) Joint lamellaire pour siège de vanne caractérisé en ce qu'il permet une compression controlée  CLAIMS 1) Lamellar seal for valve seat characterized in that it allows controlled compression 2) Dispositif selon la revendication 1) caractérisé en ce qu'il comporte une virolle de contrôle2) Device according to claim 1) characterized in that it comprises a control ferrule d'écrasement 5. overwriting 5. 3) Dispositif suivant la revendication 1) et la revendication 2) caractérisé en ce que l'épaisseur du3) Device according to claim 1) and claim 2) characterized in that the thickness of the joint lamellaire a une épaisseur e très précise et constante dans le temps. lamellar joint has a very precise and constant thickness e over time. 4) Dispositif selon la revendication 1) ou la revendication 2) ou la revendication 3) caractérisé en ce4) Device according to claim 1) or claim 2) or claim 3) characterized in que la virolle de contrôle d'écrasement 5 a une épaisseur e très précise. that the crushing control ferrule 5 has a very precise thickness e. 5) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que la5) Device according to any one of the preceding claims, characterized in that the rondelle métallique supérieure 7 ou inférieure 8 peut recevoir une gorge 10 pour logement d'un upper metal washer 7 or lower washer 8 can receive a groove 10 for housing a joint. attached. 6) Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que la virolle6) Device according to any one of the preceding claims, characterized in that the ferrule 5 a un ajustement précis facilement réalisable entre son diamètre intérieur d et le diamètre 5 has a precise adjustment easily achievable between its internal diameter d and the diameter correspondant extérieur de la rondelle intermédiaire 9  outside correspondent of the intermediate washer 9
FR9716567A 1997-12-26 1997-12-26 LAMELLAR SEAL FOR VALVE SEAT, CONTROLLED COMPRESSION SEAL Expired - Lifetime FR2773202B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9716567A FR2773202B1 (en) 1997-12-26 1997-12-26 LAMELLAR SEAL FOR VALVE SEAT, CONTROLLED COMPRESSION SEAL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9716567A FR2773202B1 (en) 1997-12-26 1997-12-26 LAMELLAR SEAL FOR VALVE SEAT, CONTROLLED COMPRESSION SEAL

Publications (2)

Publication Number Publication Date
FR2773202A1 true FR2773202A1 (en) 1999-07-02
FR2773202B1 FR2773202B1 (en) 2000-01-28

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FR9716567A Expired - Lifetime FR2773202B1 (en) 1997-12-26 1997-12-26 LAMELLAR SEAL FOR VALVE SEAT, CONTROLLED COMPRESSION SEAL

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011141641A1 (en) 2010-05-11 2011-11-17 Ksb S.A.S. Faucet having a metal gasket
WO2011151533A1 (en) 2010-06-04 2011-12-08 Ksb S.A.S. Valve with two part seal
EP3239566A4 (en) * 2014-12-26 2018-08-01 Hitachi-GE Nuclear Energy, Ltd. Butterfly valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6602094U (en) * 1967-11-10 1969-04-17 Adams App Geb FLAP VALVE
JPS6376963A (en) * 1986-09-18 1988-04-07 Kitazawa Valve:Kk Valve seat structure
JPH0198771A (en) * 1987-10-09 1989-04-17 Kitazawa Valve:Kk Valve seat
DE3800705A1 (en) * 1988-01-13 1989-08-10 Jansen Gmbh Th Sealing arrangement for shut-off flaps

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6602094U (en) * 1967-11-10 1969-04-17 Adams App Geb FLAP VALVE
JPS6376963A (en) * 1986-09-18 1988-04-07 Kitazawa Valve:Kk Valve seat structure
JPH0198771A (en) * 1987-10-09 1989-04-17 Kitazawa Valve:Kk Valve seat
DE3800705A1 (en) * 1988-01-13 1989-08-10 Jansen Gmbh Th Sealing arrangement for shut-off flaps

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 302 (M - 732) 17 August 1988 (1988-08-17) *
PATENT ABSTRACTS OF JAPAN vol. 013, no. 310 (M - 850) 14 July 1989 (1989-07-14) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011141641A1 (en) 2010-05-11 2011-11-17 Ksb S.A.S. Faucet having a metal gasket
WO2011151533A1 (en) 2010-06-04 2011-12-08 Ksb S.A.S. Valve with two part seal
EP3239566A4 (en) * 2014-12-26 2018-08-01 Hitachi-GE Nuclear Energy, Ltd. Butterfly valve
US10260651B2 (en) 2014-12-26 2019-04-16 Hitachi-Ge Nuclear Energy, Ltd. Butterfly valve formed of a laminated material

Also Published As

Publication number Publication date
FR2773202B1 (en) 2000-01-28

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Year of fee payment: 19

TP Transmission of property

Owner name: DAHER VALVES, FR

Effective date: 20151222

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