EP4078016A1 - Poste de régulation de la circulation d'un gaz entre deux réseaux de gaz - Google Patents
Poste de régulation de la circulation d'un gaz entre deux réseaux de gazInfo
- Publication number
- EP4078016A1 EP4078016A1 EP20833883.0A EP20833883A EP4078016A1 EP 4078016 A1 EP4078016 A1 EP 4078016A1 EP 20833883 A EP20833883 A EP 20833883A EP 4078016 A1 EP4078016 A1 EP 4078016A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- network
- compression device
- compression
- pressure
- 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
Links
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 37
- 230000006835 compression Effects 0.000 claims abstract description 117
- 238000007906 compression Methods 0.000 claims abstract description 117
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 83
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 description 189
- 230000032258 transport Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 239000005431 greenhouse gas Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- 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
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/06—Fluid distribution
- F17C2265/068—Distribution pipeline networks
Definitions
- the present invention relates to a station for regulating the circulation of a gas between two gas networks. More particularly, the present invention relates to a station for regulating a gas from a so-called "upstream” network transporting the gas at a pressure P a to a so-called “downstream” gas network transporting the gas at a pressure Pb such that P a. is strictly greater than Pb.
- the flow rate of gas from an upstream gas transport network to a downstream network transporting gas at a pressure lower than the gas pressure of the upstream network is regulated by a valve.
- the actuation of the valve requires motorization pressure supplied by an engine gas supplied at sufficient pressure.
- This motive gas can be compressed air requiring the presence of a compressed air circuit.
- the compressed air supply comes from an energy consuming compressor.
- This driving gas can also be gas taken from the upstream network.
- the expansion of the engine gas when the pneumatic valve is actuated lowers its pressure to an insufficient pressure to allow its reinjection into the downstream network.
- this motive gas is usually released into the atmosphere.
- the release of gases into the atmosphere poses an environmental problem.
- the release of methane into the atmosphere in particular is problematic because methane is a powerful greenhouse gas, which contributes to global warming.
- the gas conveyed by the network discharged after its use as a driving gas is not recovered, which represents an economic loss.
- the present invention aims to remedy all or part of these drawbacks.
- the present invention relates to a station for regulating the circulation of a gas from a so-called “upstream” network transporting the gas to a pressure P a to a so-called “downstream” gas network transporting the gas at a pressure Pb such that P a is strictly greater than Pb, which comprises:
- a compression device comprising a piston actuated by the expansion of gas supplied by the upstream network and configured to compress a gas called "engine gas",
- a pneumatic valve configured to control the gas flow from the upstream network circulating to the downstream network, actuated by the engine gas.
- the gas expansion energy from the upstream network is used to compress a motive gas actuating the pneumatic valve.
- the control station of the invention makes it possible to avoid the use of a compressor and therefore to save energy in its operation, while avoiding the release of greenhouse gases into the atmosphere.
- the driving gas is atmospheric air supplied to the compression device by a suction means.
- the gas expansion energy from the upstream network is used to compress atmospheric air.
- This embodiment advantageously replaces known devices using compressed air supplied by an electric air compressor as the driving gas. The power consumption of the air compressor is thus saved.
- the driving gas is gas from the upstream network actuating the pneumatic valve and then compressed by the compression device before being discharged to the downstream network.
- This embodiment advantageously replaces the known devices which implement actuation of a pneumatic regulating valve by pressurized gas coming from the upstream network.
- the control station of the invention allows the gas from the upstream network to be compressed again and then to be injected into the downstream network. This helps prevent the release of harmful gases into the atmosphere.
- the compression device is a pneumatic booster
- the piston is a free piston between an expansion chamber and a compression chamber
- the regulation station comprises:
- the regulating station which is the subject of the invention uses, in order to use the energy of expansion of a gas to compress an engine gas, a free piston booster.
- the compression device makes it possible, by recovering the expansion energy of a gas coming from a gas network at pressure Pa and going into a gas network at pressure Pb, where Pa is greater than Pb, therefore without expenditure energy, to compress the engine gas.
- the free piston comprises an expansion head and a compression head connected by a shaft, a through opening opening out, on the one hand, into the expansion head on the side opposite the compression head and, on the other hand, into a side wall of the tree,
- the outlet of the expansion chamber to which the second pipe is connected is located on a side face of the expansion chamber and is not obstructed by the expansion head until the through opening does not open into the pressure chamber. relaxation.
- the free piston booster operates without an external moving part as long as there is a pressure difference between the first pipe and the second pipe.
- the regulation station comprises a heat exchanger configured to transfer heat from the driving gas compressed by the compression device to the gas of the upstream network intended to actuate the compression device.
- the drop in temperature of the gas from the upstream network actuating the compression device can be at least partially compensated by the heat supplied by the driving gas compressed by the compression device.
- the flow of the driving gas at the level of the compression device can be decoupled from the flow of the driving gas at the level of the pneumatic control valve.
- the reservoir acts as a buffer capacity by regulating the maximum pressure at the valve pilot level.
- the regulating station includes a filter drier positioned between the suction means and the compression device.
- the invention relates to a method for regulating the circulation of a gas from a so-called “upstream” network transporting the gas at a pressure P a to a so-called “downstream” gas network transporting the gas at a pressure.
- Pb such that P a is strictly greater than Pb, which comprises the following steps:
- engine gas of a pneumatic control valve configured to control the gas flow from the upstream network flowing to the downstream network
- a compression device comprising a piston actuated by the expansion of gas supplied by the upstream network
- the driving gas is atmospheric air compressed by the compression device.
- the driving gas is the gas transported by the upstream network and the driving gas expanded upon actuation of the pneumatic control valve is compressed before being discharged to the downstream network.
- FIG. 1 shows, schematically, a first particular embodiment of the control station object of the present invention
- FIG. 2 represents, schematically, the first particular embodiment of the regulation station object of the present invention
- FIG. 3 represents, schematically, a second particular embodiment of the regulation station object of the present invention
- FIG. 4 represents , schematically, the second particular embodiment of the regulating station which is the subject of the present invention
- FIG. 5 shows, schematically, a first particular embodiment of a compression device comprising a free piston implemented in different embodiments of the device which is the subject of the invention
- FIG. 6 represents, schematically, a first operating phase of a second particular embodiment of a compression device comprising a free piston with a through-opening
- FIG. 1 shows, schematically, a first particular embodiment of the control station object of the present invention
- FIG. 2 represents, schematically, the first particular embodiment of the regulation station object of the present invention
- FIG. 3 represents, schematically, a second particular embodiment of the regulation station object of the present invention
- FIG. 4 represents
- FIG. 7 represents, schematically, a second operating phase of a second particular embodiment of a coding device mpression comprising a free piston with through opening
- FIG. 8 represents, schematically, a third operating phase of a second particular embodiment of a compression device comprising a free piston with through opening
- FIG. 9 represents, schematically, a fourth operating phase of a second particular embodiment of a compression device comprising a free piston with a through opening
- FIG. 10 represents, schematically and in the form of a flowchart, a particular succession of steps of a particular embodiment of the regulation method object of the present invention
- FIG. 11 represents, schematically and in the form of a flowchart, a particular succession of steps of a particular embodiment of the regulation method object of the present invention .
- Figures 1 and 2 are not to scale, schematic views of a first embodiment of a control station 100 object of the present invention.
- Figure 1 is a simplified diagram of the control station 100 and
- Figure 2 is a more complete diagram of the control station 100.
- the regulating station 100 is positioned at the interface of a gas transport network called “upstream network” and a gas transport network called “downstream network”.
- the upstream network 101 transports the gas at a pressure P a to the downstream network 102 which transports the gas at a pressure Pb such that P a is strictly greater than Pb.
- a pneumatic valve 110 regulates the flow of gas circulating from the upstream network 101 to the downstream network 102.
- the gas flow from the upstream network 101 to the downstream network 102 is controlled to correspond to a determined flow rate value or to maintain a predetermined pressure in the upstream network 101 or in the downstream network 102.
- the pneumatic valve 110 requires for its operation to be supplied by a pressurized gas called "engine gas".
- engine gas a pressurized gas
- the driving gas is supplied to the pneumatic valve at a pressure between 1 and 10 bar.
- the driving gas is supplied to the pneumatic valve at a pressure of 2 bar.
- the driving gas is atmospheric air 190 collected by a suction means (not shown).
- a piston 11 creates the suction.
- the regulating station 100 includes a compression device 70 configured to compress the engine gas.
- the regulating station which is the subject of the invention uses, in order to use the expansion energy of a fluid to compress a second, a compression device 70.
- the compression device 70 is a booster comprising a free piston. .
- the compression device 70 comprising a free piston which is shown in Figures 1 to 4. It is recalled that, in a free piston booster, the movement of the piston responds only to the pressure of the gas, without a connecting rod. do not operate or hold it back. Those skilled in the art can easily replace this free piston with a pneumatic membrane booster, for example.
- the particular embodiments of the compression device 70 will be better understood on reading the description of FIGS. 5 to 9.
- the compression device 70 comprises a piston 11 actuated by the expansion of gas in an expansion chamber 17. Gas is supplied to the expansion chamber 17. via a pipe 31 supplied by the upstream network 101. The gas from the upstream network 101, once expanded in the expansion chamber 17, is discharged to the downstream network 102 via a pipe 32.
- the compression device 70 comprises a compression chamber 23.
- the compression chamber 23 is supplied by the engine gas, that is to say by atmospheric air.
- the driving gas is conveyed to the compression chamber 23 through the gas line 33.
- the pressure applied by the piston 11 in the compression chamber 23 makes it possible to compress the driving gas.
- the driving gas is supplied to the regulating valve 110 for its actuation, via the control means 112.
- a gas line 34 conveys the driving gas from the compression device 70 to the pilot means 112.
- the pneumatic control valves and their piloting means are well known from the prior art and are not described in detail here.
- the driving gas is then released into the atmosphere through a discharge line 166.
- the compression device 70 is that illustrated by one of Figures 6 to 9. In embodiments, the compression device 70 is the pneumatic booster illustrated in Figure 5.
- the regulating station 100 comprises a reservoir 180 of driving gas positioned between the pneumatic valve 110 and the compression device 70.
- the reservoir 180 is also called “capacity”.
- the reservoir 180 is, for example, a cylinder configured to store the driving gas at a determined pressure.
- the reservoir 180 is formed from several cylinders.
- the supply of gas to the compression device 70 from the upstream network is controlled as a function of the pressure of the motive gas in the reservoir 180.
- a pressure switch 174 measures the pressure of the motive gas in the reservoir 180. and actuates the opening of a valve 176 positioned between the upstream network 101 and the compression device 70 when the measured pressure is below a determined threshold.
- the valve 176 is closed when the pressure measured in the reservoir 180 is greater than a predetermined threshold.
- a pressure regulator 173 is positioned on the line connecting the compression device 70 to the reservoir 180.
- a pressure regulator 171 is positioned on the line connecting the reservoir 180 to the pilot 112 of the pneumatic valve 110.
- a pipe comprising a non-return valve 170 and a pressure regulator 172 connects the upstream network to the reservoir 180.
- the driving gas may consist of air compressed by the compression device 70, for example gas coming from the upstream network 101 or by a mixture of compressed air and gas coming from the upstream network 101.
- the compressed air is used as the driving gas during the normal operation of the regulation station 100.
- the non-return valve 170 opens allowing the supply of the reservoir 180 with gas from the upstream network 101.
- the gas coming from the upstream network 101 is not used as gas engine only in the event of a failure of the compressed air supply.
- the assembly formed by the non-return valve and the pressure regulator is replaced by a valve whose impulse line is placed on the reservoir 180.
- the regulation station 100 comprises a heat exchanger 150 configured to transfer heat from the driving gas compressed by the compression device 70 to the gas of the upstream network actuating the compression device.
- the heat exchanger 150 is positioned overlapping between the gas line conveying the compressed air by the compression device to the reservoir 180 and the line conveying the gas from the upstream network 101 intended to actuate the compression device 70.
- the regulating station 100 includes a filter drier 195 positioned between the atmospheric air suction means and the compression device 70.
- Figures 3 and 4 are not to scale, schematic views of a second embodiment of a regulating station 200 object of the present invention.
- Figure 3 shows a simplified diagram of the control station 200 and
- Figure 4 shows a more complete diagram of the control station 200.
- the regulating station 200 is positioned at the interface of an upstream gas transport network 201 and a downstream gas transport network 202.
- a pneumatic valve 210 controls the flow of gas flowing from the upstream network 201 to the downstream network 202.
- the flow of gas from the upstream network 201 to the downstream network 202 is controlled to be maintained at a flow rate value. determined or as a function of a pressure in the upstream network 201 or in the downstream network 202.
- the second embodiment of the regulating station 200 differs from the first illustrated in FIGS. 1 and 2 in that the driving gas is gas from the upstream network.
- the gas from the upstream network is supplied to the pneumatic valve for its actuation, without prior compression. Then, this driving gas is collected and then compressed by the compression device before being discharged to the downstream network.
- the driving gas is supplied by the upstream network 201 to the regulating valve 210 via the piloting means 212.
- the regulating valves and their piloting means are well known from the prior art and are not described in detail. here.
- the regulating station 200 includes a compression device 70 configured to compress the engine gas.
- the compression device 70 comprises a piston 11 actuated by the expansion of gas coming from the upstream network 201. This gas, distinct from the driving gas, is supplied by a pipe 31 connected to the upstream network 201. The gas from the upstream network 201 expanded in the compression device is evacuated to the downstream network 202 via a gas pipe 32.
- the compression device 70 comprises a compression chamber 23.
- the compression chamber 23 is supplied by the engine gas, that is to say by the gas from the upstream network 201, previously relaxed during its use for the actuation of the pneumatic valve 210.
- the driving gas is conveyed to the compression chamber 23 through the gas line 33.
- the pressure applied by the piston 11 in the compression chamber 23 makes it possible to compress the driving gas.
- the driving gas is thus compressed to a pressure sufficient to be reinjected into the downstream network 202.
- a gas line 34 conveys the driving gas from the compression device to the downstream network.
- the compression device 70 is that illustrated by one of Figures 6 to 9. In some embodiments, the compression device 70 is the pneumatic booster 60 shown in Figure 5.
- control station 200 includes a reservoir 280 of driving gas positioned between the pneumatic valve 210 and the compression device 70.
- the supply of gas to the compression device 70 from the upstream network is controlled as a function of the pressure of the driving gas in the reservoir 280.
- a pressure switch 274 measures the pressure of the driving gas. in the reservoir 280 and actuates the opening of a valve 276 positioned between the upstream network 201 and the compression device 70 when the measured pressure is greater than a determined threshold.
- the valve 276 is closed when the pressure measured in the reservoir 280 is below a predetermined threshold.
- a valve 281 is positioned on the reservoir 280. In the event of failure of the compression device 70, the gas pressure in the reservoir 280 will rise until causing the opening of the valve 281 allowing the operation to be made. relieve the pressure in the reservoir 280 and ensure the proper functioning of the control means 212.
- a pressure regulator 278 is positioned on the pipe connecting the upstream network 201 and the control means 212 of the pneumatic valve 210.
- a pressure regulator 277 is positioned on the pipe conveying the driving gas compressed by the compression device 70 to the downstream network 202.
- the regulation station 200 comprises a heat exchanger 250 configured to transfer heat from the driving gas compressed by the compression device 70 to the gas of the upstream network actuating the compression device.
- the heat exchanger 250 is positioned overlapping between the pipe conveying the gas from the upstream network compressed by the compression device to the downstream network 202 and the pipe conveying the gas from the upstream network 201 intended to actuate the compression device 70.
- FIG. 5 shows a particular embodiment of the compression device 60 implemented by the regulating station which is the subject of the invention.
- the compression device 60 is a booster, that is to say a pair of pressure reducing valve 71, on the left, and compressor 72, on the right, with free piston.
- the regulator 71 comprises a chamber 75 provided with a high pressure gas inlet coming from the first pipe 31 and a low pressure gas outlet in the second pipe 32.
- an expansion piston 74 is brought into operation. Movement by the pressure of the gas and transmits this pressure, via a shaft 76 to a compression piston 77 which compresses driving gas in a chamber 78.
- the set of pistons 74 and 77 and of the shaft 76 constitutes a free piston.
- Valves 15 and 16 provide the seal and the direction of movement of the fluid from the third line 33 for entering low-pressure engine gas to the fourth high pressure engine gas outlet pipe 34.
- the system for controlling the entry of gas into the chamber 75 and the outlet of gas from the chamber 75 is not described here, being well known to those skilled in the art.
- the driving gas is the gas designated as such because it is intended to provide the motorization pressure necessary for controlling the pneumatic valve of the control station which is the subject of the invention.
- a free piston is moved in a first chamber 75 by the gas and compresses the driving gas in a second chamber 78. It is noted that the pressure of the fluid at the outlet of the compressor can be higher than the pressure of the gas at the inlet. , depending on the ratio of the surfaces of pistons 74 and 77.
- the free piston is replaced by membranes, as in membrane blowers of known type.
- the compression device 70 is a free piston booster 11.
- the arrows in broken lines represent the movements of gas.
- the arrow in solid lines represents the movements of the free piston.
- the free piston 11 comprises an expansion head 20 and a compression head 22 connected by a shaft.
- a through opening 24 opens on the one hand into the expansion head 20 on the side opposite the compression head 22 and, on the other hand, into a side wall of the shaft.
- the first gas line 31 opens into part 21 of the expansion chamber 17 opposite the shaft.
- the outlet of the expansion chamber 17 to which the second pipe 32 is connected is located on a side face of the expansion chamber 17 and is not obstructed by the expansion head 20 when the through opening 24 does not open. in the part 21 of the expansion chamber 17. More particularly, the outlet of the expansion chamber is obstructed by the expansion head except in the position of the free piston where the free volume of the compression chamber is minimal.
- the free volume of the compression chamber is intermediate between its extreme values.
- the pressure in the part 17 of the expansion chamber opposite to the compression chamber 23 is at the value Pb of the downstream network 13.
- the gas coming from the first pipe 31 enters the intermediate part 21 of the pressure chamber. expansion, at a pressure Pa.
- the pressure ratio Pa / Pb is greater than the ratio of the areas of the expansion head 20 in part 17 and in part 21.
- the free piston 11 therefore moves to the left, as illustrated in Figure 7. This movement of the free piston 11 causes the suction of gaseous fluid from the third pipe 33 through the inlet valve 15.
- the through opening 24 opens.
- this free piston booster 11 operates without an external moving part and as long as there is a sufficient pressure difference between the first pipe and the second pipe.
- FIGS. 10 and 11 we can see schematically and in the form of a flowchart, a set of particular steps of the regulation process 500 and of the regulation process 600.
- the regulation methods according to the invention make it possible to control the flow rate of circulation of a gas from an upstream network transporting the gas at a pressure P a to a downstream gas network transporting the gas at a pressure Pb such that P a is strictly greater than Pb.
- the regulation methods according to the invention include a step of actuation by a gas called "engine gas” of a pneumatic regulating valve configured to control the gas flow from the upstream network flowing to the downstream network.
- the regulation methods according to the invention comprise a step of compressing the engine gas by means of a compression device comprising a piston actuated by the expansion of gas supplied by the upstream network.
- the regulation methods according to the invention include a step of evacuating the gas expanded to the downstream network during the compression step.
- the driving gas is atmospheric air compressed by the compression device.
- the regulation method 500 comprises:
- a step 515 of actuation by compressed atmospheric air of a pneumatic control valve configured to control the gas flow from the upstream network flowing to the downstream network
- the driving gas is the gas transported by the upstream network and the driving gas expanded when the pneumatic regulation valve is actuated is compressed before being discharged to the downstream network.
- the regulation method 600 comprises:
- step 610 of actuation by gas from the upstream network of a pneumatic control valve configured to control the gas flow from the upstream network flowing to the downstream network
- the regulation methods which are the subject of the invention are implemented by a regulation station according to the invention.
- the functions of the different embodiments of the control station described above can be transcribed in the form of process steps.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1915368A FR3105344B1 (fr) | 2019-12-20 | 2019-12-20 | Poste de régulation de la circulation d’un gaz entre deux réseaux de gaz |
PCT/EP2020/087412 WO2021123418A1 (fr) | 2019-12-20 | 2020-12-21 | Poste de régulation de la circulation d'un gaz entre deux réseaux de gaz |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4078016A1 true EP4078016A1 (fr) | 2022-10-26 |
EP4078016B1 EP4078016B1 (fr) | 2024-01-31 |
Family
ID=70008796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20833883.0A Active EP4078016B1 (fr) | 2019-12-20 | 2020-12-21 | Poste de régulation de la circulation d'un gaz entre deux réseaux de gaz |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4078016B1 (fr) |
FR (1) | FR3105344B1 (fr) |
WO (1) | WO2021123418A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3125578B1 (fr) * | 2021-07-26 | 2024-04-19 | Grtgaz | Dispositif de décompression d’un contenant de gaz |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4350019A (en) * | 1980-12-22 | 1982-09-21 | W. R. Grace & Co. | Gas expansion/compression train |
DE9215695U1 (de) * | 1992-11-18 | 1993-10-14 | Anton Piller GmbH & Co KG, 37520 Osterode | Erdgas-Expansionsanlage |
DE4416359C2 (de) * | 1994-05-09 | 1998-10-08 | Martin Prof Dr Ing Dehli | Mehrstufige Hochtemperatur-Gas-Expansionsanlage in einem Gasleitungssystem mit nutzbarem Druckgefälle |
US7272932B2 (en) * | 2002-12-09 | 2007-09-25 | Dresser, Inc. | System and method of use of expansion engine to increase overall fuel efficiency |
SI2264288T1 (sl) * | 2009-06-11 | 2011-12-30 | Thermonetics Ltd | Sistem za učinkovito sprostitev tlaka fluida pod tlakom |
FR3082597B1 (fr) * | 2018-06-15 | 2020-11-27 | Grtgaz | Installation de rebours a optimisation energetique |
FR3090812B1 (fr) * | 2018-12-21 | 2022-01-07 | Grtgaz | Poste de détente d’un gaz |
-
2019
- 2019-12-20 FR FR1915368A patent/FR3105344B1/fr active Active
-
2020
- 2020-12-21 EP EP20833883.0A patent/EP4078016B1/fr active Active
- 2020-12-21 WO PCT/EP2020/087412 patent/WO2021123418A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
WO2021123418A1 (fr) | 2021-06-24 |
FR3105344A1 (fr) | 2021-06-25 |
FR3105344B1 (fr) | 2021-11-19 |
EP4078016B1 (fr) | 2024-01-31 |
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