AU2003260622B2 - Method for pressure regulation of a cryogenic fluid tank, and corresponding tank - Google Patents
Method for pressure regulation of a cryogenic fluid tank, and corresponding tank Download PDFInfo
- Publication number
- AU2003260622B2 AU2003260622B2 AU2003260622A AU2003260622A AU2003260622B2 AU 2003260622 B2 AU2003260622 B2 AU 2003260622B2 AU 2003260622 A AU2003260622 A AU 2003260622A AU 2003260622 A AU2003260622 A AU 2003260622A AU 2003260622 B2 AU2003260622 B2 AU 2003260622B2
- Authority
- AU
- Australia
- Prior art keywords
- tank
- pressure
- liquid
- gas
- fluid
- 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.)
- Ceased
Links
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
- 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
-
- 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
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
-
- 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
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0107—Propulsion of the fluid by pressurising the ullage
-
- 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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
- F17C2250/0434—Pressure difference
-
- 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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0626—Pressure
Abstract
The invention concerns a cryogenic fluid tank (1) connected to an installation consuming said fluid, containing, under a storage pressure higher than atmospheric pressure, a cryogenic fluid in liquid phase at the bottom of the tank and in gas phase at the top of the tank. The tank (1) is adapted both to feed the consuming installation (2) with liquid drawn from the tank bottom, and to be supplied with fluid from outside. The method for ensuring pressure regulation of the tank (1) consists in varying the pressure at the tank top on the basis of the operating status of said tank. The invention is applicable to liquid nitrogen storage.
Description
WO 2004/005791 T/FR2003/001938 Method for pressure regulation of a cryogenic fluid tank, and corresponding tank The present invention relates to a method for pressure regulation of a cryogenic fluid tank connected to an installation consuming this fluid, this tank containing, at a storage pressure above atmospheric pressure, a cryogenic fluid in liquid phase at the bottom of the tank and in gaseous phase at the top of the tank, this tank being adapted to feed the consuming installation with liquid drawn from the bottom of the tank, and also to be supplied with fluid from the outside. It also relates to such a tank.
The invention applies more particularly to so-called "low pressure storage" tanks, namely those in which the maximum pressure reached at the top of the tank is generally less than approximately 4 bar, the pressure indicated here and the pressures indicated subsequently being in bar absolute.
Such tanks are currently used for storing a cryogenic fluid, that is to say a fluid which, at atmospheric pressure, is liquid at a temperature considerably lower than 0 0 C. They are connected to at least one consuming installation, such as a tunnel for deep-freezing food products. Since the storage pressure of the tank is above atmospheric pressure, opening a valve placed on the line connecting the tank to the consuming installation brings about the movement of the liquid from its draw-off point to its point of use, without means of forced entrainment and in spite of pressure losses.
In order to ensure that the cryogenic liquid is always entrained whatever the level of liquid in the tank, the pressure of the gas at the top of the tank is conventionally regulated so that this pressure remains substantially equal to a fixed predetermined value, generally of the order of 2 to 3 bar.
However, the pressure of the liquid at the bottom -2- 00 0 of the tank varies according to the height of the liquid inside the tank, so that, as the
O
N liquid level falls, the pressure of the liquid withdrawn falls and tends to approach the Zpressure of the gas at the top. For example, for nitrogen, a liquid height of approximately 10 meters implies a pressure differential of the order of 0.6 bar between the gas pressure at the top and the liquid pressure at the bottom of the tank, at the draw-off level.
This pressure variation of the liquid at the draw-off point leads of necessity to a variation in the flow of liquid withdrawn, bringing about operational fluctuations for the consuming installation situated downstream. A symmetrical effect is produced when the tank is replenished with fluid.
The above discussion of background art is included to explain the context of the present invention. It is not to be taken as an admission that any of the documents or other material referred to was published, known or part of the common general knowledge at the priority date of any one of the claims of this specification.
It would be desirable to provide a regulating method that guarantees a substantially constant flow drawn off at the bottom of the tank and that, more generally, improves the storage, supply and withdrawal performance of the cryogenic fluid tank.
To this end, the invention is directed to a method for regulating the pressure of a cryogenic fluid tank as defined above, in which the pressure of the gas at the top of the tank is varied according to the operational state of this tank.
Accordingly, there is provided according to a broad form of the invention a method for pressure regulation of a cryogenic fluid tank connected to an installation consuming this fluid, this tank containing, at a storage pressure above atmospheric pressure, a cryogenic fluid in liquid phase at the bottom of the tank and in gaseous phase at the top of the tank, said tank being adapted to feed the consuming installation with liquid drawn from the bottom of the tank, and also to be supplied with fluid from the outside, wherein the pressure of the gas at the top of the tank is varied according to the operational state of this tank.
As described more precisely below, the "operational state" of the tank is understood to mean the different phases through which it passes during it use: withdrawal of liquid bringing about a lowering of level, replenishing the tank bringing about a rise in level, or furthermore stand-by phases for the consuming installation when the tank is thus at rest.
-3- 00 0 According to other features of this method, taken in isolation or in all
O
I technically possible combinations: when the level of the liquid varies inside the tank, the pressure of the liquid at the bottom of the tank is kept at a constant predetermined value, by varying the pressure of the gas at the top of the tank; the pressure of the liquid maintained at said predetermined value is measured at the point where the liquid is drawn off to the consuming installation; the pressure of the liquid maintained at said predetermined value is measured at the point of highest altitude along a line connecting the tank to the consuming installation; ,when liquid is withdrawn from the tank and the liquid level falls, liquid drawn from the bottom of the tank is vaporized so as to form gas conveyed to the top of said tank; when the tank is fed with fluid and the liquid level rises, at least part of the gas situated at the top of the tank is vented to the outside of said tank; the feed fluid is introduced at the bottom of the tank, in the liquid state; when the tank is not feeding the consuming installation, the pressure of the gas at the top of the tank is reduced substantially to atmospheric pressure; and the storage pressure of the tank is below 4 bar.
The invention is also directed to a cryogenic liquid tank of the type containing, at a storage pressure above atmospheric pressure, a cryogenic fluid in liquid phase at the bottom of the tank and in gaseous phase at the top of said tank, this tank having means of connection to an installation consuming the fluid contained in the tank, and means for feeding in said fluid from outside, said tank having at the same time means for pressurizing the gas at the top of the tank, means for venting said gas to the outside, and a unit for controlling said pressurizing means and venting means according to the operational state of this tank.
The invention will be better understood on reading the following description, given only by way of example and made with reference to the single figure that is a diagrammatic view of a tank according to the invention.
A nitrogen tank 1 is shown in the single figure, 4 containing liquid nitrogen at the bottom, also known as the "vessel", and gaseous nitrogen at a pressure of approximately 2 bar at the top, also known as the "head". The liquid level inside the tank is denoted by the reference N.
The bottom of the tank 1 is connected to a consuming installation 2, for example a deep-freezing tunnel, via a connecting line 3 provided with a shutoff valve 4. The point at which the line 3 is connected to the tank 1, which is denoted by P, is usually called the "draw-off point".
The tank 1 has means 5 for pressurizing the gas at the top of the tank. These means 5 include a line 6 connecting the bottom of the tank to its top and there is provided, from upstream to downstream, an apparatus 7 for measuring the liquid nitrogen pressure, for example a manometer, a shut-off valve 8 (preferably a solenoid valve) and a vaporizer 9.
The tank 1 also has means 10 for venting the gas at the top of the tank to air. These means 10 comprise a line 11 venting to the outside provided, upstream to downstream, with a manometer 12, a shut-off valve 13 and if desired a device for venting to air (not shown), commonly called a "silencer".
A unit 15 for controlling the means 5 for pressurizing the top as well as the means 10 for venting the top to air is connected, for example by electrical connections, on the one hand to the pressure measuring apparatuses 7 and 12, and on the other hand to the valves 8 and 13. The control unit 15 is of the type adapted on the one hand to determine, continuously or at regular intervals, the pressure of liquid nitrogen at the bottom of the tank 1 and of gaseous nitrogen at the top of this tank and, on the other hand, to compare the value of the pressure at the bottom with a chosen predetermined value that can be modified by the user. The unit 15 is also able to control the total or partial opening, as well as the closing, of the valves 8 and 13 so as to regulate the 5 pressures at the bottom and top of the tank 1, as will be subsequently described in detail.
Means 16 for supplying nitrogen are also provided to supply the tank 1 with liquid nitrogen regularly or as the case may be continually. Conventionally, these means 16 include a line 17 feeding through the bottom of the tank providing what is called "spring" filling and, as the case may be, a line 18 for feeding through the top of the tank providing what is called "rain" filling.
The tank 1 also includes a known overflow device 19 designed to limit the height of the liquid inside the tank. In figure 1, the liquid level N is shown at its maximum.
This figure illustrates the example of a 50 000 liter tank giving rise to a height N of approximately meters, which in this case creates a pressure differential between the top and the bottom of the tank of approximately 0.6 bar.
The tank 1, of which the pressure is regulated according to the invention, is operated as follows: It is considered that, at the moment the tank 1 starts to operate, the tank is in the state described above, namely the gas pressure at the top has a value of substantially 2 bar and the liquid pressure at the level of the draw-off point P has a value of approximately 2.6 bar. Moreover, the predetermined pressure value memorized in the control unit 15 is chosen to be substantially equal to 2.6 bar.
When the installation 2 is fed with liquid nitrogen from the tank 1, the liquid level N inside the tank falls, bringing about a reduction in the height of liquid nitrogen above the draw-off point P, and therefore a corresponding reduction in liquid pressure.
This liquid pressure, measured by the apparatus 7, becomes less than the predetermined value memorized in the unit 15 which then controls the opening of the valve 8 and thus the supply of liquid nitrogen to the vaporizer 9. Vaporized liquid nitrogen forms a gas that 6 is led to the top of the tank 1, thus increasing its pressure. This gas pressure increase at the top has an effect on the liquid pressure at the bottom of the tank, until this pressure reaches the aforementioned predetermined value.
In this way, the control unit 15 keeps the liquid pressure at the draw-off point P substantially constant during all the period when nitrogen is drawn off. The flow rate through the line 3 connected to the consuming installation 2 therefore remains substantially constant, limiting fluctuations in the operation of this installation 2.
When the tank 1 is supplied (or resupplied) with liquid nitrogen, for example by a "spring" feed, the liquid level inside the tank 1 rises, bringing about a corresponding rise in gas pressure at the top of the tank. The unit 15 detects a pressure rise via measurements by the manometer 7 and then orders the opening of the venting valve 13, which causes the gas pressure at the top to fall and consequently the liquid pressure at the bottom of the tank. The unit 15 keeps the valve 13 open while the liquid pressure at the bottom of the tank remains higher than the previously mentioned predetermined value.
Regulation of the tank 1 is substantially similar when liquid nitrogen is fed in at the top. "Spring" filling is however preferred to "rain" filling, the latter tending on the one hand to reduce the gas pressure to a greater extent and on the other hand to heat the liquid.
Advantageously, the control unit 15 is adapted so as to improve the capacity to preserve the refrigeration of the stored liquid. To this end, when there is no requirement in principle to draw from the tank 1 over a period of several hours (for example during the night) the unit 15 orders the total opening of the venting valve 13. The gas pressure at the top of the tank then passes from a storage value of approximately 2 bar to substantially atmospheric 7 pressure (residual pressure of a few hundred grams).
In this state, the tank 1 is no longer able to supply the installation 2, the movement of the fluid inside the line 3 no longer being ensured. However, by reducing the storage pressure of the nitrogen in this way, the enthalpy of the latter tends to increase, which amounts to providing a fluid at a lower temperature than when it was under pressure. The fluid stored in this way during these periods when the tank 1 is not in use therefore has a lower than ordinary temperature, guaranteeing better "cryogenic quality" (in terms of available refrigeration).
At the end of the period when the tank is not in use, the unit 15 orders the top of the tank to be put under pressure again, via the means 5, until the liquid pressure at the bottom of the tank reaches the previously mentioned predetermined value.
By causing the pressure of the gas at the top of the tank to vary according to the operational state of this tank, that is to say in particular according to whether liquid is actually withdrawn or not, and/or according to whether the tank is being supplied, the regulating process according to the invention makes it possible in this way to improve storage, supply and withdrawal performance.
As a variant of the regulating process according to the invention, the liquid pressure is not measured, as previously, substantially at the level of the liquid draw-off point, but is measured at the level of the point of highest altitude along the line 3 connecting the tank 1 to the consuming installation 2.
Claims (12)
1. A method for pressure regulation of a cryogenic fluid tank connected to an installation consuming this fluid, this tank containing, at a storage pressure above atmospheric pressure, a cryogenic fluid in liquid phase at the bottom of the tank and in Ngaseous phase at the top of the tank, said tank being adapted to feed the consuming Ninstallation with liquid drawn from the bottom of the tank, and also to be supplied with fluid from the outside, wherein the pressure of the gas at the top of the tank is varied according to the operational state of this tank.
2. The method as claimed in claim 1, wherein when the level of the liquid varies inside the tank, the pressure of the liquid at the bottom of the tank is kept at a constant predetermined value, by varying the pressure of the gas at the top of the tank.
3. The method as claimed in claim 2, wherein the pressure of the liquid maintained at said predetermined value is measured at the point where the liquid is drawn off to the consuming installation.
4. The method as claimed in claim 2, wherein the pressure of the liquid maintained at said predetermined value is measured at the point of highest altitude along a line connecting the tank to the consuming installation.
The method as claimed in any one of claims 2 to 4, wherein, when liquid is withdrawn from the tank and the liquid level falls, liquid drawn from the bottom of the tank is vaporized so as to form gas conveyed to the top of said tank.
6. The method as claimed in any one of claims 2 to 5, wherein, when the tank is fed with fluid and the liquid level rises, at least part of the gas at the top of the tank is vented to the outside of said tank.
7. The method as claimed in claim 6, wherein the feed fluid is introduced at the bottom of the tank, in the liquid state.
8. The method as claimed in claim 1, wherein, when the tank is not feeding the consuming installation, the pressure of the gas at the top of the tank is reduced substantially to atmospheric pressure.
9. The method as claimed in any one of the preceding claims, wherein the storage pressure of the tank is below 4 bar.
A cryogenic fluid tank of the type containing, at a storage pressure above atmospheric pressure, a cryogenic fluid in liquid phase at the bottom of the tank and in gaseous phase at the top of said tank, this tank having means of connection to an -9- 00 installation consuming the fluid contained in the tank, and means for feeding in said ,IC fluid from outside, wherein it has at the same time means for pressurizing the gas at the top of the tank, means for venting said gas to the outside, and a unit for controlling t said pressurizing means and venting means according to the operational state of the tank.
11. A method for pressure regulation of a cryogenic fluid tank, wherein pressure of gas at the top of the tank is varied according to the operational state of the \tank, which method is substantially as herein described with reference to the Figure.
12. A cryogenic fluid tank having means for pressurizing gas at the top of tank, means for venting said gas to outside, a unit for controlling said pressurizing means and venting means according to the operational state of the tank, substantially as herein described with reference to the Figure.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR02/08449 | 2002-07-05 | ||
| FR0208449A FR2841963B1 (en) | 2002-07-05 | 2002-07-05 | PRESSURE REGULATION METHOD OF A CRYOGENIC FLUID RESERVOIR, AND CORRESPONDING RESERVOIR |
| PCT/FR2003/001938 WO2004005791A2 (en) | 2002-07-05 | 2003-06-24 | Method for pressure regulation of a cryogenic fluid tank, and corresponding tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2003260622A1 AU2003260622A1 (en) | 2004-01-23 |
| AU2003260622B2 true AU2003260622B2 (en) | 2008-08-14 |
Family
ID=29725193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2003260622A Ceased AU2003260622B2 (en) | 2002-07-05 | 2003-06-24 | Method for pressure regulation of a cryogenic fluid tank, and corresponding tank |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1521933B1 (en) |
| AT (1) | ATE453829T1 (en) |
| AU (1) | AU2003260622B2 (en) |
| CA (1) | CA2491022C (en) |
| DE (1) | DE60330777D1 (en) |
| FR (1) | FR2841963B1 (en) |
| WO (1) | WO2004005791A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130037166A1 (en) * | 2010-04-27 | 2013-02-14 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method and equipment for rapidly filling a downstream tank with cryogenic liquid from an upstream store |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1813855A1 (en) * | 2006-01-27 | 2007-08-01 | L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Process and arrangement for filling a high pressure gas container with liquefied gas under hydrostatic pressure |
| FR2922991B1 (en) | 2007-10-26 | 2015-06-26 | Air Liquide | METHOD FOR ESTIMATING CHARACTERISTIC PARAMETERS OF A CRYOGENIC RESERVOIR AND IN PARTICULAR OF GEOMETRIC PARAMETERS OF THE RESERVOIR |
| FR2922992B1 (en) | 2007-10-26 | 2010-04-30 | Air Liquide | METHOD FOR REAL-TIME DETERMINATION OF THE FILLING LEVEL OF A CRYOGENIC RESERVOIR |
| FR2924788B1 (en) * | 2007-12-11 | 2015-04-03 | Air Liquide | METHOD FOR DETERMINING THE FLUID MASS IN A CRYOGENIC RESERVOIR AND MASS FLUID FLOW CONSUMED. |
| FR2953370B1 (en) | 2009-12-08 | 2012-08-03 | Air Liquide | METHOD AND INSTALLATION FOR COOLING AND / OR FREEZING PRODUCTS, IN PARTICULAR FOOD PRODUCTS, USING THE INJECTION OF TWO CRYOGENIC LIQUIDS |
| US9939109B2 (en) | 2010-08-25 | 2018-04-10 | Chart Inc. | Bulk liquid cooling and pressurized dispensing system and method |
| US9869429B2 (en) * | 2010-08-25 | 2018-01-16 | Chart Industries, Inc. | Bulk cryogenic liquid pressurized dispensing system and method |
| JP6434762B2 (en) * | 2014-09-26 | 2018-12-05 | 川崎重工業株式会社 | Hydrogen fuel supply system |
| GB2537913B (en) * | 2015-04-30 | 2019-12-18 | Spirax Sarco Ltd | Apparatus and method for determining an amount of non-condensable gas |
| FR3060708B1 (en) * | 2016-12-21 | 2019-10-25 | Engie | DEVICE, SYSTEM AND METHOD FOR PRESSURE REGULATION FOR LIQUEFIED NATURAL GAS STORAGE TANK |
| AT520862B1 (en) * | 2018-01-16 | 2019-12-15 | Sasu Energiesysteme Gmbh | Method and device for filling a container with a cryogenic liquid |
| DE102018108214A1 (en) * | 2018-04-06 | 2019-10-10 | Samson Ag | Tank arrangement and method for level control |
| FR3089600B1 (en) * | 2018-12-06 | 2021-03-19 | Air Liquide | Cryogenic fluid storage tank |
| FR3089599B1 (en) | 2018-12-06 | 2020-11-13 | Air Liquide | Cryogenic fluid storage tank |
| FR3114765B1 (en) | 2020-10-05 | 2022-08-19 | Air Liquide | "Process for supplying cryogenic fluid to a user station, in particular a machining machine" |
| FR3121731B1 (en) * | 2021-04-13 | 2023-02-24 | Air Liquide | Fluid storage and supply device and vehicle, vehicle and method comprising such a device |
| FR3121732A1 (en) * | 2021-04-13 | 2022-10-14 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Fluid storage and supply device and vehicle, vehicle and method comprising such a device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781491A (en) * | 1986-12-17 | 1988-11-01 | Taisei Road Constructions Co., Ltd. | Road surface heating vehicle and a gas supply system therefor |
| US5231838A (en) * | 1991-05-17 | 1993-08-03 | Minnesota Valley Engineering, Inc. | No loss single line fueling station for liquid natural gas vehicles |
| EP1180637A2 (en) * | 2000-08-19 | 2002-02-20 | Messer Griesheim Gmbh | Method and device for pressure regulated liquefied gas supply from a gas tank with heat exchanger |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE553071A (en) * | 1955-12-02 | 1900-01-01 |
-
2002
- 2002-07-05 FR FR0208449A patent/FR2841963B1/en not_active Expired - Fee Related
-
2003
- 2003-06-24 DE DE60330777T patent/DE60330777D1/en not_active Expired - Lifetime
- 2003-06-24 WO PCT/FR2003/001938 patent/WO2004005791A2/en not_active Application Discontinuation
- 2003-06-24 AT AT03762706T patent/ATE453829T1/en not_active IP Right Cessation
- 2003-06-24 AU AU2003260622A patent/AU2003260622B2/en not_active Ceased
- 2003-06-24 CA CA2491022A patent/CA2491022C/en not_active Expired - Fee Related
- 2003-06-24 EP EP03762706A patent/EP1521933B1/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781491A (en) * | 1986-12-17 | 1988-11-01 | Taisei Road Constructions Co., Ltd. | Road surface heating vehicle and a gas supply system therefor |
| US5231838A (en) * | 1991-05-17 | 1993-08-03 | Minnesota Valley Engineering, Inc. | No loss single line fueling station for liquid natural gas vehicles |
| EP1180637A2 (en) * | 2000-08-19 | 2002-02-20 | Messer Griesheim Gmbh | Method and device for pressure regulated liquefied gas supply from a gas tank with heat exchanger |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130037166A1 (en) * | 2010-04-27 | 2013-02-14 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method and equipment for rapidly filling a downstream tank with cryogenic liquid from an upstream store |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE453829T1 (en) | 2010-01-15 |
| EP1521933A2 (en) | 2005-04-13 |
| WO2004005791A3 (en) | 2004-04-08 |
| CA2491022C (en) | 2011-08-09 |
| AU2003260622A1 (en) | 2004-01-23 |
| CA2491022A1 (en) | 2004-01-15 |
| DE60330777D1 (en) | 2010-02-11 |
| EP1521933B1 (en) | 2009-12-30 |
| FR2841963B1 (en) | 2005-07-01 |
| FR2841963A1 (en) | 2004-01-09 |
| WO2004005791A2 (en) | 2004-01-15 |
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