EP1258671A1 - Obturating and connecting device for external pipes for a cryogenic fluid tank - Google Patents
Obturating and connecting device for external pipes for a cryogenic fluid tank Download PDFInfo
- Publication number
- EP1258671A1 EP1258671A1 EP01401173A EP01401173A EP1258671A1 EP 1258671 A1 EP1258671 A1 EP 1258671A1 EP 01401173 A EP01401173 A EP 01401173A EP 01401173 A EP01401173 A EP 01401173A EP 1258671 A1 EP1258671 A1 EP 1258671A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- assembly
- passage
- sub
- molded
- 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
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Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
- F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0639—Steels
- F17C2203/0643—Stainless steels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0382—Constructional details of valves, regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/21—Shaping processes
- F17C2209/2109—Moulding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
Abstract
Description
La présente invention concerne les réservoirs de fluide cryogénique et, plus particulièrement les dispositifs d'obturation et de raccordement à des canalisations externes de tels réservoirs.The present invention relates to cryogenic fluid reservoirs and, more particularly the shutter and connection devices to external pipelines of such tanks.
Les dispositifs connus d'obturation et de raccordement des réservoirs de fluide cryogénique sont constitués d'un assemblage mécano-soudé d'une plaque d'obturation et de pièces de raccordement usinées et fixées, typiquement par soudage, dans des orifices usinés dans la plaque d'obturation. Cette technique est particulièrement onéreuse, du fait du nombre de pièces différentes à réaliser, stocker et assembler, et au nombre important de rebuts résultant des problèmes d'usinage et de soudage des matériaux constitutifs, typiquement des aciers inoxydables austénitiques.Known devices for closing and connecting tanks of cryogenic fluid consist of a mechanically welded assembly of a blanking plate and machined and fixed connection parts, typically by welding, in holes machined in the cover plate. This technique is particularly expensive, because of the number of parts different to make, store and assemble, and the large number of rejects resulting from the machining and welding problems of the constituent materials, typically austenitic stainless steels.
La présente invention a pour objet de proposer une architecture de dispositif simplifiée permettant de supprimer la plupart de ces problèmes et de réduire grandement les coûts de fabrication et d'assemblage.The object of the present invention is to provide an architecture for simplified device to eliminate most of these problems and greatly reduce manufacturing and assembly costs.
Pour ce faire, l'invention propose un dispositif comportant un sous-ensemble monobloc en acier inoxydable moulé, réalisé typiquement par moulage à la cire perdue, définissant au moins deux, typiquement au moins trois canaux de passage de fluide.To do this, the invention provides a device comprising a subset monobloc in molded stainless steel, typically made by lost wax molding, defining at least two, typically at least three fluid passage channels.
Selon une caractéristique plus particulière de l'invention, le sous-ensemble monobloc est réalisé par moulage à partir d'un alliage en acier inoxydable austénitique comprenant au moins 16%, typiquement entre 16 et 18,5% de chrome et au moins 10%, typiquement entre 10 et 13,5% de nickel, et ayant, en phase liquide, un taux de ferrite supérieur à 2%, de préférence n'excédant pas 6%.According to a more particular characteristic of the invention, the subset monobloc is made by molding from a steel alloy austenitic stainless comprising at least 16%, typically between 16 and 18.5% chromium and at least 10%, typically between 10 and 13.5% nickel, and having, in the liquid phase, a ferrite content greater than 2%, preferably not exceeding 6%.
La présente invention a également pour objet un réservoir de fluide cryogénique, notamment d'oxygène liquide pour oxygénothérapie à domicile, équipé d'un tel dispositif et typiquement pourvu de deux réchauffeurs atmosphériques reliés à des passages de sorties de liquide et de gaz du dispositif.The present invention also relates to a fluid reservoir cryogenic, especially liquid oxygen for home oxygen therapy, equipped with such a device and typically provided with two heaters atmospheric connected to liquid and gas outlet passages from the device.
D'autres avantages et caractéristiques de la présente invention ressortiront de la description suivante d'un mode de réalisation, donné à titre illustratif mais nullement limitatif, faite en relation avec les dessins annexés sur lesquels :
- la figure 1 est une vue schématique en coupe verticale de la partie supérieure d'un réservoir cryogénique d'oxygénothérapie pourvu d'un dispositif selon l'invention ;
- la figure 2 est une vue en coupe du dispositif de la figure 1 dans un plan de coupe orthogonal au plan de coupe de la figure 1 ; et
- la figure 3 est une vue de côté du dispositif de la figure 2.
- Figure 1 is a schematic view in vertical section of the upper part of a cryogenic oxygen therapy tank provided with a device according to the invention;
- Figure 2 is a sectional view of the device of Figure 1 in a section plane orthogonal to the section plane of Figure 1; and
- FIG. 3 is a side view of the device in FIG. 2.
Sur la figure 1 on a représenté un dispositif selon l'invention mis en
place sur une bride de col 2 montée dans le col d'un réservoir cryogénique 3.In Figure 1 there is shown a device according to the invention set
place on a
Selon un aspect de l'invention, le dispositif selon l'invention comprend
un sous-ensemble monobloc 1 réalisé en acier inoxydable moulé comprenant
essentiellement une partie principale en forme de disque 4 ayant une surface
inférieure transversale formant plan de joint 5 monté plaqué sur la bride 2
munie d'un joint annulaire 6.According to one aspect of the invention, the device according to the invention comprises
a one-
Le sous-ensemble 1 comporte une cheminée centrale 7 orthogonale au
disque 4, sensiblement coaxiale à ce dernier, et définissant un passage
central 8. Dans la partie principale 4 sont définis, avec des bossages en saillie
sur la face opposée au plan de joint 5, un premier canal transversal 9, un
deuxième canal transversal 10 orthogonal au précédent et un troisième canal
transversal 11 dans le plan du canal 10 et diamétralement opposé à ce dernier.
Le canal 10 débouche à la partie inférieure du disque 4 par une cavité 12
tandis que le canal 11 débouche, lui, par une portion de canal 13 formée en
partie dans un épaulement en saillie 14 où débouche également vers le bas le
canal central 8. Le canal 9 débouche similairement vers le bas par une portion
de canal formée dans un épaulement en saillie 15. The
Comme on le voit sur la figure 1, à l'opposé du canal 9 est formé un
canal axial 16 traversant le disque 4 recevant une pièce 17 permettant le
raccordement électrique à une jauge capacitive de niveau 18.As seen in Figure 1, opposite the
Le sous-ensemble monobloc 1 est monté sur la bride 2 par trois vis
angulairement réparties (non représentées) et par une colonne 19 à extrémité
inférieure filetée servant également, via une plaque support 20, à supporter un
boítier de vanne de contrôle de débit 21, comme on le verra plus loin.The
Comme on le voit sur la figure 1, en configuration assemblée, le canal 9
reçoit l'extrémité 22 amont d'un serpentin réchauffeur atmosphérique 23, tel
que décrit dans la demande de brevet français FR 99 13617, la portion de
canal dans l'épaulement 15 recevant l'extrémité d'un tube plongeur 24
s'étendant jusqu'au voisinage du fond du récipient intérieur du réservoir 3. De
façon similaire, un tube plongeur 25 est monté dans l'extrémité inférieure du
canal 8. Ce dernier est prolongé vers le haut par un évasement formé dans une
tête de diamètre élargi 26 comportant un filetage extérieur 27 et recevant
l'extrémité inférieure d'une borne de remplissage à clapet 28 maintenue en
place sur la cheminée 7 par un écrou 29 coopérant avec le filetage 27.As seen in Figure 1, in the assembled configuration, the
Au canal transversal 10 est raccordée l'extrémité amont d'un serpentin
réchauffeur atmosphérique 30 dont l'extrémité aval est reliée au boítier de
vanne 21 susmentionné. Le canal 11 est quant à lui relié extérieurement à une
vanne de mise à l'air (non représentée).To the
La mise en oeuvre du dispositif décrit est la suivante : le remplissage en
fluide liquéfié, du réservoir 3 s'opère à une basse pression, proche de 3 bar,
via la borne à clapet 28, le canal 8 et le tube 25, le volume intérieur du
réservoir étant, pendant cette opération, en communication avec l'atmosphère
ambiante via les canaux 13 et 11 et la vanne de mise à l'air libre en aval de ce
dernier. Typiquement un tube de trop plein (non représenté) s'étendant dans le
réservoir, est brasé dans le canal 13 pour limiter la hauteur de liquide
entreposé dans le réservoir. En exploitation, le prélèvement du fluide
cryogénique sous forme liquide contenu dans le réservoir, préssurisé par le
ciel gazeux dans le réservoir, s'effectue par le tube 24, le canal 9 et le
serpentin 23 avant d'atteindre le boítier de vanne à contrôle de débit 21
fournissant, par sa sortie 31, un flux gazeux à débit contrôlé vers un utilisateur.
Le prélèvement de la phase gazeuse dans le réservoir 3 s'effectue par le canal
10 et le serpentin 30 avant de rejoindre le boítier de vanne21, pourvu d' au
moins une soupape de surpression de sécurité 32.The implementation of the device described is as follows: filling in
liquefied fluid, from
Comme on le voit sur la figure 1, le canal de sortie de liquide 9 est placé
à l'opposé du passage 16 de montage de la sonde 18 de façon que le
soutirage de liquide s'effectue avec un minimum de transmission de frigories à
la traversée 17 de la sonde 18. De façon similaire, comme on le voit sur la
figure 2, le canal 11 se prolonge hors du disque 4 par une extension tubulaire
transversale 33 permettant d'éloigner la vanne de mise à l'air libre du disque 4
et donc d'éviter une mise en froid excessive de cette vanne.As seen in Figure 1, the
Dans un mode de réalisation préféré, le sous-ensemble 1 est réalisé par
moulage à la cire perdue, ce qui supprime quasiment les reprises d'usinage, à
partir d'acier inoxydable comprenant au moins 16% de chrome et au moins
10% de nickel, typiquement un lopin en acier inoxydable du type 316L qui,
après coulée, représente un taux de ferrite supérieur à 2%, typiquement entre
2 et 6%, qui est obtenu par un apport de chrome dans le bain de métal en
fusion.In a preferred embodiment, the
Claims (12)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01401173A EP1258671B1 (en) | 2001-05-07 | 2001-05-07 | Obturating and connecting device for external pipes for a cryogenic fluid tank |
DE60100174T DE60100174T2 (en) | 2001-05-07 | 2001-05-07 | Connection and sealing device with external piping of a container for cryogenic liquid |
ES01401173T ES2195982T3 (en) | 2001-05-07 | 2001-05-07 | DEVICE AND CONNECTION DEVICE FOR EXTERNAL CHANNELS OF A CRIOGENO FLUID TANK. |
AT01401173T ATE237098T1 (en) | 2001-05-07 | 2001-05-07 | CONNECTION AND CLOSURE DEVICE WITH OUTER PIPES OF A CONTAINER FOR CRYOGENIC FLUID |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01401173A EP1258671B1 (en) | 2001-05-07 | 2001-05-07 | Obturating and connecting device for external pipes for a cryogenic fluid tank |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1258671A1 true EP1258671A1 (en) | 2002-11-20 |
EP1258671B1 EP1258671B1 (en) | 2003-04-09 |
Family
ID=8182714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01401173A Expired - Lifetime EP1258671B1 (en) | 2001-05-07 | 2001-05-07 | Obturating and connecting device for external pipes for a cryogenic fluid tank |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1258671B1 (en) |
AT (1) | ATE237098T1 (en) |
DE (1) | DE60100174T2 (en) |
ES (1) | ES2195982T3 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4956975A (en) * | 1989-08-17 | 1990-09-18 | Gustafson Keith W | Shutoff valve for cryogenic liquid storage tank |
US5711354A (en) * | 1993-04-28 | 1998-01-27 | Advanced Delivery & Chemical Systems, Inc. | Level control systems for high purity chemical delivery systems |
US5869746A (en) * | 1996-04-26 | 1999-02-09 | Honda Giken Kogyo Kabushiki Kaisha | Piping for compressed fuel in motorcar |
US5975121A (en) * | 1995-06-08 | 1999-11-02 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Tap/pressure regulator assembly for a gas bottle and a gas bottle equipped with such an assembly |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4394929A (en) * | 1981-04-10 | 1983-07-26 | Union Carbide Corporation | Cryogenic liquid storage container having an improved access conduit |
-
2001
- 2001-05-07 EP EP01401173A patent/EP1258671B1/en not_active Expired - Lifetime
- 2001-05-07 ES ES01401173T patent/ES2195982T3/en not_active Expired - Lifetime
- 2001-05-07 DE DE60100174T patent/DE60100174T2/en not_active Expired - Lifetime
- 2001-05-07 AT AT01401173T patent/ATE237098T1/en active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4956975A (en) * | 1989-08-17 | 1990-09-18 | Gustafson Keith W | Shutoff valve for cryogenic liquid storage tank |
US5711354A (en) * | 1993-04-28 | 1998-01-27 | Advanced Delivery & Chemical Systems, Inc. | Level control systems for high purity chemical delivery systems |
US5975121A (en) * | 1995-06-08 | 1999-11-02 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Tap/pressure regulator assembly for a gas bottle and a gas bottle equipped with such an assembly |
US5869746A (en) * | 1996-04-26 | 1999-02-09 | Honda Giken Kogyo Kabushiki Kaisha | Piping for compressed fuel in motorcar |
Also Published As
Publication number | Publication date |
---|---|
ES2195982T3 (en) | 2003-12-16 |
DE60100174T2 (en) | 2004-03-04 |
DE60100174D1 (en) | 2003-05-15 |
EP1258671B1 (en) | 2003-04-09 |
ATE237098T1 (en) | 2003-04-15 |
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