EP1258671A1 - Dispositif d'obturation et de raccordement à des canalisations externes d'un réservoir de fluide cryogénique - Google Patents
Dispositif d'obturation et de raccordement à des canalisations externes d'un réservoir de fluide cryogénique 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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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
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- 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
Definitions
- the present invention relates to cryogenic fluid reservoirs and, more particularly the shutter and connection devices to external pipelines of such tanks.
- 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.
- 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.
- 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.
- 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%.
- 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.
- Figure 1 there is shown a device according to the invention set place on a neck flange 2 mounted in the neck of a cryogenic tank 3.
- the device according to the invention comprises a one-piece sub-assembly 1 made of molded stainless steel comprising essentially a main disc-shaped part 4 having a surface lower transverse forming joint plane 5 mounted flat on the flange 2 fitted with an annular seal 6.
- the sub-assembly 1 comprises a central chimney 7 orthogonal to the disc 4, substantially coaxial with the latter, and defining a passage central 8.
- a first transverse channel 9 In the main part 4 are defined, with protruding bosses on the face opposite the joint plane 5, a first transverse channel 9, a second transverse channel 10 orthogonal to the previous one and a third channel transverse 11 in the plane of the channel 10 and diametrically opposite the latter.
- the channel 10 opens at the lower part of the disc 4 by a cavity 12 while the channel 11 opens, for its part, by a portion of channel 13 formed in part in a projecting shoulder 14 where also the downward opening central channel 8.
- Channel 9 similarly opens downwards through a portion channel formed in a projecting shoulder 15.
- a axial channel 16 passing through the disc 4 receiving a part 17 allowing the electrical connection to a level 18 capacitive gauge.
- the monobloc sub-assembly 1 is mounted on the flange 2 by three screws angularly distributed (not shown) and by a column 19 at the end threaded lower also serving, via a support plate 20, to support a flow control valve housing 21, as will be seen later.
- the channel 9 receives the upstream end 22 of an atmospheric heating coil 23, such as described in French patent application FR 99 13617, the portion of channel in the shoulder 15 receiving the end of a dip tube 24 extending to the vicinity of the bottom of the inner container of the reservoir 3.
- a dip tube 25 is mounted in the lower end of the channel 8. The latter is extended upward by a flare formed in a enlarged diameter head 26 having an external thread 27 and receiving the lower end of a valve filling terminal 28 maintained at place on the chimney 7 by a nut 29 cooperating with the thread 27.
- transverse channel 10 To the transverse channel 10 is connected the upstream end of a coil atmospheric heater 30, the downstream end of which is connected to the housing of valve 21 mentioned above.
- Channel 11 is in turn connected externally to a vent valve (not shown).
- the implementation of the device described is as follows: filling in liquefied fluid, from reservoir 3 operates at a low pressure, close to 3 bar, via valve 28, channel 8 and tube 25, the internal volume of the tank being, during this operation, in communication with the atmosphere room via channels 13 and 11 and the vent valve downstream of this latest.
- an overflow tube (not shown) extending into the tank, is brazed in channel 13 to limit the height of liquid stored in the tank.
- fluid removal cryogenic in liquid form contained in the tank, pressurized by the gaseous sky in the tank is carried out by the tube 24, the channel 9 and the coil 23 before reaching the flow control valve housing 21 supplying, via its output 31, a gaseous flow with controlled flow rate to a user.
- the sampling of the gas phase in the reservoir 3 is carried out by the channel 10 and the coil 30 before joining the valve housing21, provided with minus a safety pressure relief valve 32.
- the liquid outlet channel 9 is placed opposite the passage 16 for mounting the probe 18 so that the withdrawal of liquid is carried out with a minimum transmission of frigories to the passage 17 of the probe 18.
- the channel 11 extends out of the disc 4 by a tubular extension transverse 33 to move the vent valve away from the disc 4 and therefore avoid excessive cooling of this valve.
- the sub-assembly 1 is produced by lost wax molding, which virtually eliminates the need for machining, from stainless steel with at least 16% chromium and at least 10% nickel, typically a piece of 316L stainless steel which, after casting, represents a ferrite content greater than 2%, typically between 2 and 6%, which is obtained by adding chromium to the metal bath fusion.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Application notamment aux réservoirs cryogéniques d'oxygène médical pour oxygénothérapie.
Description
- 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.
Claims (12)
- Dispositif d'obturation et de raccordement à des canalisations externes d'un réservoir (3) de fluide cryogénique, caractérisé en ce qu'il comporte un sous-ensemble monobloc (1) en acier inoxydable moulé définissant au moins deux canaux de passage de fluide (8-11).
- Dispositif selon la revendication 1, caractérisé en ce que le sous-ensemble moulé (1) définit au moins trois conduits de passage de fluide (8-11).
- Dispositif selon la revendication 1 ou la revendication 2, caractérisé en ce que le sous-ensemble moulé (1) présente une partie principale généralement en forme de disque (4) et ayant une face formant un plan de joint (5).
- Dispositif selon la revendication 3, caractérisé en ce qu'au moins un canal (9,10,11) débouche latéralement par rapport à la partie principale (4).
- Dispositif selon la revendication 3 ou la revendication 4 , caractérisé en ce qu'un canal (8) s'étend orthogonalement par rapport à la partie principale (4).
- Dispositif selon la revendication 5, caractérisé en ce que le canal s'étendant orthogonalement (8) est formé en partie par une partie tubulaire en saillie (7).
- Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il comporte un passage traversant (16) de montage d'une traversée (17) de jauge de niveau (18).
- Dispositif selon l'une des revendications 2 à 7, caractérisé en ce que le sous-ensemble moulé (1) définit un passage central de remplissage (8), un passage de sortie de liquide (9) et un passage de sortie de gaz (10).
- Dispositif selon l'une des revendications précédentes, caractérisé en ce que le sous-ensemble (1) est réalisé par moulage à la cire perdue d'un acier inoxydable austénitique comprenant au moins 16% de chrome et au moins 10% de nickel ayant, en phase liquide, un taux de ferrite supérieur à 2%, de préférence n'excédant pas 6%.
- Réservoir cryogénique équipé d'un dispositif selon l'une des revendications précédentes.
- Réservoir selon la revendication 10 équipé d'un dispositif selon la revendication 8, caractérisé en ce qu'il comporte deux réchauffeurs atmosphériques (23,30) reliés respectivement aux passages de sortie de liquide (9) et de gaz (10).
- Réservoir selon la revendication 10 ou la revendication 11, caractérisé en ce qu'il contient de l'oxygène liquide médical.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01401173A EP1258671B1 (fr) | 2001-05-07 | 2001-05-07 | Dispositif d'obturation et de raccordement à des canalisations externes d'un réservoir de fluide cryogénique |
ES01401173T ES2195982T3 (es) | 2001-05-07 | 2001-05-07 | Dispositivo de obturacion y de conexion a canalizaciones externas de un deposito de fluido criogeno. |
AT01401173T ATE237098T1 (de) | 2001-05-07 | 2001-05-07 | Anschluss- und verschlussvorrichtung mit aussenrohrleitungen eines behälters für kryogenische flussigkeit |
DE60100174T DE60100174T2 (de) | 2001-05-07 | 2001-05-07 | Anschluss- und Verschlussvorrichtung mit Aussenrohrleitungen eines Behälters für kryogenische Flussigkeit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01401173A EP1258671B1 (fr) | 2001-05-07 | 2001-05-07 | Dispositif d'obturation et de raccordement à des canalisations externes d'un réservoir de fluide cryogénique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1258671A1 true EP1258671A1 (fr) | 2002-11-20 |
EP1258671B1 EP1258671B1 (fr) | 2003-04-09 |
Family
ID=8182714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01401173A Expired - Lifetime EP1258671B1 (fr) | 2001-05-07 | 2001-05-07 | Dispositif d'obturation et de raccordement à des canalisations externes d'un réservoir de fluide cryogénique |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1258671B1 (fr) |
AT (1) | ATE237098T1 (fr) |
DE (1) | DE60100174T2 (fr) |
ES (1) | ES2195982T3 (fr) |
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/fr not_active Expired - Lifetime
- 2001-05-07 AT AT01401173T patent/ATE237098T1/de active
- 2001-05-07 DE DE60100174T patent/DE60100174T2/de not_active Expired - Lifetime
- 2001-05-07 ES ES01401173T patent/ES2195982T3/es not_active Expired - Lifetime
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 |
---|---|
ATE237098T1 (de) | 2003-04-15 |
DE60100174D1 (de) | 2003-05-15 |
DE60100174T2 (de) | 2004-03-04 |
EP1258671B1 (fr) | 2003-04-09 |
ES2195982T3 (es) | 2003-12-16 |
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