EP4106898A1 - Vakuumentgaser mit einer messfunktion zur ermittlung der konzentration an gelöstem gas in einem fluid und verfahren zum betreiben des vakuumentgasers - Google Patents
Vakuumentgaser mit einer messfunktion zur ermittlung der konzentration an gelöstem gas in einem fluid und verfahren zum betreiben des vakuumentgasersInfo
- Publication number
- EP4106898A1 EP4106898A1 EP21706488.0A EP21706488A EP4106898A1 EP 4106898 A1 EP4106898 A1 EP 4106898A1 EP 21706488 A EP21706488 A EP 21706488A EP 4106898 A1 EP4106898 A1 EP 4106898A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- gas
- liquid
- space
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0036—Flash degasification
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0063—Regulation, control including valves and floats
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04044—Purification of heat exchange media
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0444—Concentration; Density
- H01M8/04485—Concentration; Density of the coolant
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- Vacuum degasser with a measuring function for determining the concentration of dissolved gas in a fluid and a method for operating the vacuum degasser
- the invention relates to a vacuum degasser, in particular for cooling water of a fuel cell, with an integrated device for measuring the gas content in the cooling water.
- cooling water is degassed in order to avoid the formation of bubbles. This is relevant when the cooling water, such as in fuel cells, is used in very small rooms. Due to the dependence of the maximum solubility of gases in cooling water, for example, as a function of temperature and pressure, the heat input, the pressure drop or the hydraulic resistance caused by the flow through thin cooling water pipes can lead to the formation of gas bubbles. The gas bubbles can prevent cooling, since less heat can be dissipated in these areas, so that local overheating could occur within the fuel cell.
- sensors which can in particular measure the nitrogen content in water.
- a cooling circuit for cooling an electrochemical cell and a method for operating such a cooling circuit are known from EP 2 645 461 A1.
- EP 3 275 524 A1 discloses a vacuum degassing device for a liquid and a method for its operation.
- a method for measuring a gas content in a liquid by means of a turbidity value is known from WO 2014/029675 A1.
- a method and a device for cooling a fuel cell system in a submarine are known from DE 10 2011 083 988 A1.
- the object of the invention is to provide a device for degassing cooling water which at the same time simply supplies information about the gas concentration dissolved in the cooling water.
- the vacuum degasser according to the invention has a degassing space.
- the degassing space has an inflow and an outflow.
- a liquid to be degassed can be supplied via the inflow.
- the liquid can be a cooling liquid, very particularly preferably the cooling liquid of a fuel cell.
- the vacuum degasser is connected in the cooling water circuit in parallel to the fuel cell.
- the inflow is connected to a first valve and the outflow is connected to a pump.
- the degassing space has a gas outlet, the gas outlet being connected to a second valve.
- the vacuum degasser has a gas sample space, the gas sample space being connected to the second valve.
- the gas sample space has a gas outlet.
- the gas outlet is connected to a third valve.
- the gas sample space is also connected to a first pressure measuring device.
- the liquid can thus be admitted into the degassing space via the inflow and the first valve connected to the inflow.
- the liquid is continuously pumped out of the degassing space via the drain by means of the pump.
- This has the effect that when the first valve is closed, liquid is pumped out of the degassing space without liquid being able to flow in.
- the pressure is thus reduced, usually down to a pressure between 5 kPa and 40 kPa, preferably between 10 kPa and 40 kPa.
- By opening the first valve arrives then liquid into the degassing volume, gas escaping from the liquid.
- the liquid is drawn into the room and this leads to a strong increase in the surface area, which extremely favors outgassing.
- the liquid penetrates via the inflow faster than it is removed via the drain and the pump, whereby the pressure inside the degassing space is increased, for example to a pressure of 150 kPa to 250 kPa, preferably from 180 kPa to 210 kPa.
- the outgassed gas is compressed above the ambient pressure, usually in the order of about 100 kPa, so that the gas can easily be released into the environment. Then the first valve is closed again and the cycle starts all over again.
- a unit for providing or maintaining a higher pressure than in the degassing space is arranged in the inflow. This can be, for example, a second pump, a pressurized liquid reservoir or a clever arrangement of the cooling circuit that the pump attached to the drain generates this pressure.
- the gas outgassed from the liquid first passes through the second valve into a gas sample chamber and the pressure can be detected there by means of the first pressure measuring device.
- the gas sample space is closed with the third valve. After the measurement and preferably with the second valve closed, the gas can be released to the environment through the third valve and the gas outlet.
- the vacuum degasser has a level sensor.
- the level sensor detects at least one level of the liquid in the degassing space.
- the level sensor can be designed as a float.
- the level sensor can also, for example, the Detect the fill level using ultrasound.
- the filling level can also be detected by means of two or more electrodes, one preferably being arranged on the underside of the degassing space.
- a liquid, especially cooling water, has a significantly higher conductivity than air.
- the level sensor can also work optically. It is true that the level can also be estimated purely over time, i.e. fixed time intervals can be used for opening and closing the valves, so that in principle the levels are known at the switching times. Alternatively, the level can also be estimated using flow meters in the inflow and in the outflow, whereby the pump can be used as a flow meter in the outflow. By measuring the volume flows, the fill level can in principle also be calculated.
- the second valve has a first part valve and a second part valve.
- the first partial valve is arranged in the interior of the degassing space and is operatively connected to the level sensor in such a way that the first partial valve is closed when a predetermined level is reached.
- the first partial valve is preferably connected to a float which changes its position relative to the valve by changing the fill level and thus opens or closes the gas passage by changing the position.
- the second valve Since the first partial valve is automatically opened again when the float drops again due to a falling fill level, the second valve also has the second partial valve.
- the second partial valve can in particular be kept closed when the float opens the first partial valve again when the fill level drops. This enables gas to be released through the third valve, even if the first partial valve is already open.
- the degassing space is connected to a second pressure measuring device.
- the volume of the degassing space is 30 to 200 times greater than the volume of the gas sample space.
- the volume of the degassing space is preferably 50 to 150 times greater than the volume of the gas sample space.
- the degassing space is designed for pressures between 5 kPa and 500 kPa.
- the degassing space must be designed for both negative and positive pressure. If the cooling water is operated, for example, in the cooling water circuit at a pressure of 300 kPa, then a safety design of 450 kPa, for example, makes sense.
- the invention relates to a method for operating a vacuum degasser according to the invention.
- the pump continuously pumps liquid out of the degassing space via the drain.
- the method has the following steps of a cycle, which are carried out repetitively one after the other: a) Supplying liquid via the inflow with the first valve open into the degassing space, the second valve being held in the open position, the third valve being held in the closed position b) closing the second valve when a first fill level of the liquid in the degassing chamber is reached, the pressure in the gas sample chamber being detected with the aid of the first pressure measuring device after the second valve is closed. c) closing the first valve and opening the third valve, d) closing the third valve, e) opening the first valve after a second time interval and restarting the cycle.
- step c) takes place after a first time interval or after reaching a second filling level or a pressure in the degassing space.
- the gas concentration in the liquid is deduced from the pressure measured in step b) in the gas sample space.
- the first valve is open during the first time interval and the first valve is closed during the second time interval.
- the first time interval thus begins with when the first valve opens and ends when the first valve closes.
- the second time interval begins with the closing of the first valve and ends with the opening of the first valve.
- step c By opening the third valve in step c), the increased gas pressure caused by the gas emerging from the cooling liquid is released to the environment, and pressure equalization takes place.
- step b) in a preferred embodiment, after the second valve has been closed, when a first fill level of the liquid in the degassing space has been reached, a further supply of liquid can take place via the inflow into the degassing space.
- the method according to the invention makes it possible to make a statement about the gas concentration in the liquid via a simple pressure measurement with a simple pressure sensor, which is a simple and robust method.
- step a) the second valve can also only be opened within the first interval and before step b) is reached, since here only pressure equalization has to take place in the gas space.
- the valve does not have to be opened at the beginning of step a).
- Step d) could also take place after step e) if the second valve is not yet open at the beginning of step a). However, step d) must have been carried out before the second valve is opened in step a).
- the first pressure measuring device can also detect the ambient pressure when the third valve is open.
- the ambient pressure can be included in the consideration of the gas concentration of the liquid. Alternatively or additionally, a further ambient pressure measuring device can be present.
- the second valve is closed in step b) as soon as the fill level sensor detects a predetermined fill level.
- the second valve is closed in step b) with the aid of a first partial valve and a second partial valve, the first partial valve being connected to a float.
- the second valve can therefore be closed when either the first partial valve or the second partial valve or the first and the second partial valve are closed. This makes it possible, with comparatively simple means, to meet the different conditions for opening and closing the second valve. For example, a swimmer alone would close the second valve at the right time, but would open it again much too early. Therefore, such a first partial valve connected to a float is combined with a second partial valve which only opens when the second valve is to be opened.
- the second valve is closed after a third time interval, the third time interval being shorter than the first time interval.
- the first time interval is chosen to have a length of 5 s to 5 min, preferably a length of 10 s to 1 min.
- the second time interval is chosen to have a length of 5 s to 5 min, preferably a length of 10 s to 30 s.
- the first time interval and the second time interval are selected to be variable and are selected as a function of the fill level of the degassing space.
- an upper level is specified. If this is reached, the first will be Time interval regarded as ended. A lower level is also specified. If this is reached, the second time interval is considered to have ended.
- the determination takes place
- the determination takes place
- the pressure and / or the temperature of the liquid in the inflow and / or degassing space is additionally recorded.
- the pressure and / or the temperature of the liquid are taken into account when determining the gas concentration in the liquid.
- the first fill level in step b) is selected such that the gas space in the degassing space that is not filled with cooling water is selected to be 3 to 5 times larger than the volume of the gas sample space.
- the invention relates to a calibration method for a vacuum degasser according to the invention.
- the vacuum degasser is operated with a liquid with a known gas content, known temperature and known pressure using the method according to the invention.
- the pressure in the gas sample space is determined as a function of the gas content, the temperature and the pressure of the liquid, a correlation table being created between the pressure in the gas sample space and the gas content of the liquid.
- the correlation table can also be estimated theoretically from solubilities and gas law, the experimental determination is advantageous, since in particular the kinetics of the water penetrating into a negative pressure is difficult to calculate. If, however, the surface and thus also the diffusion lengths are not known, theoretical correlation tables can only give a rough approximation.
- a conventional sensor for determining the gas content of the liquid is operated in front of or in parallel with the vacuum degasser.
- a conventional sensor is a sensor that can determine the absolute concentration of the gas that is dissolved in the liquid.
- this gas can be nitrogen, oxygen or carbon dioxide.
- the sensor can be a nitrogen, oxygen or carbon dioxide sensor, for example. With the help of the sensor, the concentration is specifically determined in each case.
- FIG. 2 second embodiment
- FIG. 3 flowchart
- a first embodiment of the vacuum degasser The central part is the degassing space 10, which is designed as a pressure vessel. Via an inflow 20 For example, liquid, in particular cooling water, can be passed into the degassing chamber 10.
- a first valve 40 is arranged to open and close the inflow. Liquid is continuously removed from the degassing space 10 via the drain 30 with the aid of the pump 50. Gas can be released from the degassing space 10 via the gas outlet 60, which can be closed with the second valve 70, into the gas sample space 80 and from there through the third valve 90 into the environment.
- the pressure in the gas sample space 80 can be measured by means of the first pressure measuring device 100.
- the embodiment shown has an optional fill level sensor 110 which regulates the second valve 70.
- a second pressure measuring device 120 is also arranged on the degassing chamber 10.
- Fig. 2 shows a second embodiment.
- the second valve 70 consists of a first partial valve 72 and a second partial valve 74.
- the fill level sensor 110 is also designed in the form of a float 112, which can open and close the first partial valve 72.
- the second valve 70 is open when both the first partial valve 72 and the second partial valve 74 are open. If at least one partial valve 72, 74 is closed, the second valve 70 is closed, since the closure of one of the two partial valves 72, 74 already means that no more gas can pass from the degassing chamber 10 into the gas sample chamber 80. So that there is a connection between the degassing chamber 10 and the gas sample chamber 80, both partial valves 72, 74 must be open.
- This embodiment is very simple and therefore very robust.
- Fig. 3 the method is shown as a flow chart.
- step a liquid is fed into the degassing chamber 10 via the inflow 20 with the first valve 40 open, the second valve 70 being held in the open position.
- the third valve 90 is held in the closed position.
- step b) the second valve closes in step b) when the liquid reaches a first level in the degassing space and further liquid is supplied via the inflow into the degassing space second valve, the pressure in the gas sample chamber is detected with the aid of the first pressure measuring device.
- step b) the first valve is closed and the third valve is opened in step c). As a result, the gas released from the liquid is released into the environment.
- step d After step c), the third valve is closed in step d).
- step d After step d), the first valve is opened in step e) after a second time interval and the cycle starts again with step a).
- Closing in step c) takes place after a first time interval or after a second fill level has been reached.
- the gas concentration in the liquid is deduced from the pressure measured in step b) in the gas sample space.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020202024.8A DE102020202024A1 (de) | 2020-02-18 | 2020-02-18 | Vakuumentgaser mit einer Messfunktion zur Ermittlung der Konzentration an gelöstem Gas in einem Fluid und Verfahren zum Betreiben des Vakuumentgasers |
| PCT/EP2021/053261 WO2021165124A1 (de) | 2020-02-18 | 2021-02-11 | Vakuumentgaser mit einer messfunktion zur ermittlung der konzentration an gelöstem gas in einem fluid und verfahren zum betreiben des vakuumentgasers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4106898A1 true EP4106898A1 (de) | 2022-12-28 |
Family
ID=74668796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21706488.0A Pending EP4106898A1 (de) | 2020-02-18 | 2021-02-11 | Vakuumentgaser mit einer messfunktion zur ermittlung der konzentration an gelöstem gas in einem fluid und verfahren zum betreiben des vakuumentgasers |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4106898A1 (de) |
| DE (1) | DE102020202024A1 (de) |
| WO (1) | WO2021165124A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020206554B3 (de) | 2020-05-26 | 2021-10-28 | Thyssenkrupp Ag | Verfahren zum Betreiben zweier fluidtechnisch parallel geschalteter Vakuumentgaser und Verwendung des Verfahrens |
| DE102021203948B4 (de) | 2021-04-21 | 2023-03-02 | Thyssenkrupp Ag | Unterseeboot mit gemeinsam redundanten Kühlkreisläufen, beispielsweise einer Brennstoffzelle und einer Batterie |
| CN115932132A (zh) * | 2022-12-02 | 2023-04-07 | 中国核动力研究设计院 | 碱性冷却剂中气态γ辐解产物的在线分离测量装置及方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT409673B (de) * | 2001-03-23 | 2002-10-25 | Anton Paar Gmbh | Verfahren und vorrichtung zur bestimmung der gehalte von in flüssigkeiten gelösten gasen |
| US8042378B2 (en) * | 2008-01-15 | 2011-10-25 | Japan Atomic Energy Agency | Gas amount measurement device |
| DE102011083988A1 (de) * | 2011-10-04 | 2013-04-04 | Thyssenkrupp Marine Systems Gmbh | Verfahren zum Kühlen einer wärmeerzeugenden Vorrichtung eines Unterseeboots und insbesondere zum Kühlen einer Brennstoffzellenanlage in einem Unterseeboot und Kühlvorrichtung zum Kühlen einer wärmeerzeugenden Vorrichtung in einem Unterseeboot und insbesondere zum Kühlen einer Brennstoffzellenanlage in einem Unterseeboot |
| EP2645461A1 (de) | 2012-03-30 | 2013-10-02 | Siemens Aktiengesellschaft | Kühlkreislauf zum Kühlen einer elektrochemischen Zelle sowie Verfahren zum Betreiben eines solchen Kühlkreislaufs |
| EP2700940A1 (de) | 2012-08-21 | 2014-02-26 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zur Messung des Gasgehalts in einer Flüssigkeit sowie Verwendung einer solchen Vorrichtung |
| CH710814A2 (de) * | 2015-03-03 | 2016-09-15 | Imi Hydronic Eng Switzerland Ag | Vorrichtung zur Entgasung einer Flüssigkeit. |
| DE102015015579B3 (de) * | 2015-12-04 | 2016-12-29 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zur Überwachung einer Brennstoffzellenanlage |
| EP3275524A1 (de) | 2016-07-29 | 2018-01-31 | Siemens Aktiengesellschaft | Unterdruck-entgasungsvorrichtung für eine flüssigkeit sowie verfahren zu deren betrieb |
-
2020
- 2020-02-18 DE DE102020202024.8A patent/DE102020202024A1/de active Pending
-
2021
- 2021-02-11 WO PCT/EP2021/053261 patent/WO2021165124A1/de not_active Ceased
- 2021-02-11 EP EP21706488.0A patent/EP4106898A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021165124A1 (de) | 2021-08-26 |
| DE102020202024A1 (de) | 2021-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP4106898A1 (de) | Vakuumentgaser mit einer messfunktion zur ermittlung der konzentration an gelöstem gas in einem fluid und verfahren zum betreiben des vakuumentgasers | |
| EP3209412B1 (de) | Überprüfung einer membrandichtheit wenigstens einer membran eines elektrolyseurs | |
| DE3708471A1 (de) | Verfahren und vorrichtung zur dichtheitskontrolle von zwei hintereinander in einer fluidleitung angeordneten ventilen | |
| DE102005060862B3 (de) | Verfahren und Vorrichtung zur Beurteilung eines Dosiervorgangs | |
| EP3275524A1 (de) | Unterdruck-entgasungsvorrichtung für eine flüssigkeit sowie verfahren zu deren betrieb | |
| EP3071964A1 (de) | Vorrichtung und verfahren zur detektion von gas | |
| DE10227160B4 (de) | Verfahren zur Durchführung eines Integritätstests von Filterelementen | |
| DE112015004729T5 (de) | Mehrfachanwendungs-Öffnungs-Kondensatableitvorrichtung | |
| DE102017113756B4 (de) | Verfahren und Vorrichtung zur Druckprüfung von beliebigen Prüflingen, deren Volumen mit einer Flüssigkeit gefüllt wird | |
| EP2987996A1 (de) | Ablasseinrichtung | |
| DE69124379T2 (de) | Vorrichtung mit einem differentiellen schwimmer und sensor, der eine solche enthält | |
| DE102021006584B3 (de) | Modul zur Erfassung einer Leckage einer Anordnung und Verfahren zur Erfassung einer Leckage einer Anordnung mit einem Tank | |
| DE102021128688B3 (de) | Modul zur Erfassung einer Leckage einer Anordnung und Verfahren zur Erfassung einer Leckage einer Anordnung | |
| DE102005025382B3 (de) | Verfahren und Vorrichtung zur Bestimmung von freiem und gelöstem Gas in Wasser | |
| EP1464948A1 (de) | Blasendrucktensiometer | |
| DE10135448A1 (de) | Vorrichtung zur Erfassung von Fluidverunreinigungen | |
| EP4610572A1 (de) | Verfahren zur ermittlung des aktuellen ist-vordrucks eines membrandruckausdehnungsgefässes | |
| DE10310874B4 (de) | Leckageerkennung bei einem Ventil | |
| DE102018113381B4 (de) | Verfahren und vorrichtung zur prüfung der dichtheit einer abwasserdruckleitung | |
| AT524168A1 (de) | Erkennungsvorrichtung für eine Erkennung von Leckagegas | |
| EP3460447A1 (de) | Prüfanordnung für bruchspannung und prüfmittel | |
| DE102017203254A1 (de) | Verfahren zur Bestimmung einer Leckagefläche eines Kraftstoffbehälters | |
| DE102004041621A1 (de) | Vorrichtung zur Analyse eines Messfluids | |
| DE102007017020A1 (de) | Verfahren sowie Vorrichtung zur Leckprüfung von Hohlvolumen | |
| DE102016009090B4 (de) | Verfahren zur Leckerkennung für einen Tank und Vorrichtung zur Ausführung des Verfahrens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20220919 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: TKMS GMBH Owner name: THYSSENKRUPP AG |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20251023 |