WO2024061553A1 - Ensemble soupape pour un réservoir de gaz combustible, réservoir de gaz combustible comprenant un ensemble soupape et système de réservoir de gaz combustible - Google Patents

Ensemble soupape pour un réservoir de gaz combustible, réservoir de gaz combustible comprenant un ensemble soupape et système de réservoir de gaz combustible Download PDF

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Publication number
WO2024061553A1
WO2024061553A1 PCT/EP2023/072858 EP2023072858W WO2024061553A1 WO 2024061553 A1 WO2024061553 A1 WO 2024061553A1 EP 2023072858 W EP2023072858 W EP 2023072858W WO 2024061553 A1 WO2024061553 A1 WO 2024061553A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel gas
valve
gas tank
valve assembly
integrated
Prior art date
Application number
PCT/EP2023/072858
Other languages
German (de)
English (en)
Inventor
Lars Ulrich
Mario BERARDI
Mathias Haenel
Harald Glawe
Till WESTENBERGER
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2024061553A1 publication Critical patent/WO2024061553A1/fr

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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves

Definitions

  • the invention relates to a valve assembly for a fuel gas tank.
  • the invention also relates to a fuel gas tank with a valve assembly according to the invention and to a fuel gas tank system.
  • the fuel gas can in particular be hydrogen or natural gas, which is stored under pressure in a fuel gas tank.
  • the preferred area of application of the invention is fuel cell and/or gas vehicles that are driven using a fuel gas.
  • the fuel gas tank is usually designed as a high-pressure tank.
  • a high pressure tank always requires a shut-off valve to seal off the tank when the vehicle is not in use.
  • the shut-off valve is usually designed as a normally closed valve.
  • the shut-off valve can be preceded by a mass flow limiting valve, which ensures that fuel gas is blown out of the fuel gas tank in a highly throttled and therefore controlled manner in the event of damage.
  • the shut-off valve can be an integral part of a valve assembly that can be used as a compact unit in the fuel gas tank, in particular in the area of a bottle neck of the fuel gas tank.
  • the shut-off valve is integrated into a removal path for removing fuel gas from the fuel gas tank.
  • a separate refueling path can be provided for filling the fuel gas tank with fuel gas.
  • a check valve is usually integrated into these to specify the direction of flow in the refueling path.
  • an additional mass flow limiting valve can also be provided in the refueling path.
  • the installation space required and the costs increase. Since the available installation space, especially in the area of a bottle neck of a fuel gas tank, is limited, additional protection of the check valve arranged in the refueling path is generally dispensed with.
  • the present invention is concerned with the task of providing a solution for securing a shut-off valve integrated in a removal path and a check valve integrated in a refueling path, which is optimized in terms of installation space and costs.
  • valve assembly with the features of claim 1 and the fuel gas tank with the features of claim 7 are proposed.
  • Advantageous developments of the invention can be found in the respective subclaims.
  • a fuel gas tank system with a fuel gas tank according to the invention is proposed.
  • the valve assembly proposed for a fuel gas tank comprises a housing in which a fuel gas line is formed, which branches within the housing into an extraction path with an integrated shut-off valve and a refueling path with an integrated check valve.
  • a mass flow limiting valve is integrated into the fuel gas line downstream of the shut-off valve and the check valve in relation to the fuel gas flow direction when fuel gas is removed from the fuel gas tank, which prevents an uncontrolled outflow of fuel gas via the fuel gas line both in the event of a defective shut-off valve and a defective check valve.
  • the mass flow limiting valve integrated into the fuel gas line is preferably designed in such a way that flow can flow freely through it in the refueling direction. In this case, the refueling process is not hindered by the mass flow limiting valve.
  • the mass flow limiting valve can in particular be designed such that it is always open during normal operation. This ensures that neither the removal of fuel gas from the fuel gas tank nor the filling of the fuel gas tank with fuel gas is hindered by the mass flow limiting valve. This can be achieved, for example, by a spring acting on a valve element in the opening direction.
  • the mass flow limiting valve remains open as long as a certain mass flow in the removal direction, which defines an activation threshold, is not exceeded.
  • a pneumatic force acts on the valve element in the closing direction, which is greater than the spring force of the spring, so that the valve element closes and a throttle bore integrated into the mass flow limiting valve only releases a greatly reduced mass flow.
  • the closed state of the mass flow limiting valve is preferably maintained until the difference between the tank pressure and the line or ambient pressure has fallen to such an extent due to the throttled mass flow in the removal direction that the spring force of the spring opens the valve element again.
  • This “reset” threshold is usually significantly lower than the “activation” threshold.
  • a filter is integrated into the fuel gas line downstream of the mass flow limiting valve based on the fuel gas flow direction when fuel gas is removed from the fuel gas tank, that is, based on the removal direction.
  • the filter is intended to prevent the entry of particles that could damage the valves of the valve assembly and/or cause the valves to jam.
  • the proposed arrangement of the filter protects all of the aforementioned valves of the valve arrangement.
  • a manually operable valve is preferably integrated into the fuel gas line downstream or upstream of the mass flow limiting valve in relation to the fuel gas flow direction when removing fuel gas from the fuel gas tank, i.e. in relation to the removal direction.
  • fuel gas can be drained from the fuel gas tank, for example in the event of a repair.
  • the shut-off valve integrated into the valve assembly is preferably designed as an electromagnetically controllable and/or normally closed valve.
  • the controllability of the shut-off valve enables controlled removal of fuel gas from the fuel gas tank.
  • the design as a normally closed valve meets the safety requirement of the shut-off valve to close tightly in the event of a fault.
  • the housing of the valve assembly preferably has a connecting section for connecting to the fuel gas tank.
  • the connecting section facilitates assembly of the valve assembly.
  • the connecting section preferably has an external thread which can be screwed into a corresponding internal thread of the fuel gas tank, in particular the bottle neck of the fuel gas tank. The screw connection enables easy assembly and - if necessary - easy disassembly of the valve assembly.
  • the housing preferably has a connection section for connecting an external fuel gas line.
  • the internal fuel gas line can be connected to an external fuel gas line via the connection section for removing fuel gas and for filling the fuel gas tank with fuel gas.
  • the connection section of the housing is arranged outside the fuel gas tank and forms a so-called “tophead” section.
  • the installation space restrictions for the tophead section are significantly lower than those for the connection section inserted into the fuel gas tank, so that a valve arranged in this section, preferably the mass flow limiting valve and possibly other valves, such as the shut-off valve, can be optimized in terms of flow and pressure loss.
  • installation space is saved in the fuel gas tank, especially in the bottle neck of the fuel gas tank.
  • a fuel gas tank with a valve assembly according to the invention is proposed.
  • the use of a valve assembly according to the invention increases the safety of the fuel gas tank, since with only one mass flow limiting valve not only a protection of the shut-off valve integrated in the removal path, but also a protection of the check valve integrated in the refueling path is achieved. At the same time, installation space and costs can be saved because only a single mass flow limiting valve is required for protection.
  • the housing of the valve assembly is inserted, in particular screwed, into sections of the fuel gas tank, preferably into a bottle neck of the fuel gas tank.
  • the housing preferably has a connecting section inserted into the fuel gas tank and a connecting section projecting above the fuel gas tank, the so-called “tophead” section.
  • the area of the fuel gas line is formed in the tophead section, in which the extraction path and the refueling path are brought together, so that only a connection to an external fuel gas line is necessary.
  • the mass flow limiting valve is also preferably integrated into the connection section or the tophead section.
  • a filter and/or a manual valve, if present, may also be located in the tophead section.
  • the shut-off valve is integrated into the connection section or tophead section. Since the installation space restrictions in the tophead section are lower, all valves housed there can the flow and function can be optimized. At the same time, the installation space in the fuel gas tank is maximized.
  • a fuel gas tank system which comprises at least one fuel gas tank according to the invention.
  • the proposed fuel gas tank system is preferably used in a fuel cell vehicle or in a gas vehicle.
  • Fig. 1 is a schematic representation of a valve assembly according to the invention for a fuel gas tank
  • Fig. 2 shows a schematic longitudinal section through a mass flow limiting valve for a valve assembly according to the invention.
  • fuel gas can be removed from a fuel gas tank 2 and the fuel gas tank 2 can be filled with fuel gas.
  • the fuel gas can be, for example, hydrogen or natural gas.
  • the valve assembly 1 shown is inserted, preferably screwed, into the fuel gas tank 2 in the area of a bottle neck 17.
  • the valve assembly 1 has a housing 3 with a connecting section 3.1 for insertion or screwing into the bottle neck 17.
  • the housing 3 has a connection section 3.2, which lies outside the bottle neck 17 of the fuel gas tank 2, so that the installation space restrictions are lower in this section.
  • Most of the valves of the valve assembly 1 are therefore integrated into the connection section 3.2 of the housing 3.
  • the valves of the valve assembly 1 include an electromagnetically controllable shut-off valve 6, which is integrated into a removal path 5 of the valve assembly 1.
  • the shut-off valve 6 is followed by a check valve 13 in the direction of removal of fuel gas or in the removal direction, which is intended to prevent unintentional opening of the shut-off valve 6 when filling the fuel gas tank 2 with fuel gas.
  • the removal path 5 opens into a fuel gas line 4, via which the removal path 5 is pneumatically connected to a refueling path 7.
  • the same pressure is present in the refueling path 7 and in the removal path 5.
  • valves of the valve assembly 1 are a manually operable valve 11 integrated into the fuel gas line 4, which is actuated in particular in the event of repairs.
  • a filter 10 is preferably connected upstream of the manually operable valve 11 in order to prevent particles from entering the valve assembly 1.
  • a further filter 16 can be integrated into the removal path 5.
  • a check valve 8 is integrated into the refueling path 7 and is intended to prevent fuel gas from flowing out of the fuel gas tank 2.
  • the check valve 8 is the only valve arranged in the connecting section 3.1 of the housing 3 of the valve assembly 1, so that the connecting section 3.1 requires little installation space and is easy to integrate into the bottle neck 17 of the fuel gas tank 2.
  • the valve assembly 1 of Figure 1 also includes a relief path 23, which also opens into the fuel gas line 4 and in which further valves are arranged.
  • another manually operable valve 14 is provided, which passes all valves and is also referred to as a “bleed valve”.
  • a valve 15 is arranged in a branch 24 of the extraction path 23, which is a safety valve to reduce any excess pressure.
  • the fuel gas line 4 Furthermore, a mass flow limiting valve 9 is integrated. In the event of damage, the mass flow limiting valve 9 prevents an uncontrolled outflow of fuel gas from the fuel gas tank 2, regardless of whether fuel gas enters the fuel gas line 4 via the extraction path 5 or the refueling path 7.
  • Figure 2 shows an example of a mass flow limiting valve 9 for a valve assembly 1 according to the invention. It comprises a spring 18, the spring force of which acts in the opening direction on a valve element 19 that can be moved back and forth, so that the spring 18 keeps the mass flow limiting valve 9 open during normal operation. Arrows mark the direction of flow from an inlet 21 towards an outlet

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

L'invention concerne un ensemble soupape (1) pour un réservoir de gaz combustible (2), comprenant un boîtier (3) dans lequel est formée une conduite de gaz combustible (4) qui se ramifie, à l'intérieur du boîtier (3), en un trajet d'extraction (5) ayant une soupape d'arrêt intégrée (6) et un trajet de ravitaillement (7) ayant un clapet anti-retour intégré (8), une soupape de limitation de débit massique (9) étant intégrée dans la conduite de gaz combustible (4) en aval de la soupape d'arrêt (6) et du clapet anti-retour (8) par rapport à la direction d'écoulement de gaz combustible pendant l'extraction de gaz combustible à partir du réservoir de gaz combustible (2), et empêchant une sortie non contrôlée de gaz combustible par la conduite de gaz combustible (4) aussi bien dans le cas d'une soupape d'arrêt défectueuse (6) que dans le cas d'un clapet anti-retour défectueux (8). L'invention concerne également un réservoir de gaz combustible (2) et un système de réservoir de gaz combustible.
PCT/EP2023/072858 2022-09-21 2023-08-18 Ensemble soupape pour un réservoir de gaz combustible, réservoir de gaz combustible comprenant un ensemble soupape et système de réservoir de gaz combustible WO2024061553A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022209914.1 2022-09-21
DE102022209914.1A DE102022209914A1 (de) 2022-09-21 2022-09-21 Ventilbaugruppe für einen Brenngastank, Brenngastank mit Ventilbaugruppe sowie Brenngastanksystem

Publications (1)

Publication Number Publication Date
WO2024061553A1 true WO2024061553A1 (fr) 2024-03-28

Family

ID=87797857

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/072858 WO2024061553A1 (fr) 2022-09-21 2023-08-18 Ensemble soupape pour un réservoir de gaz combustible, réservoir de gaz combustible comprenant un ensemble soupape et système de réservoir de gaz combustible

Country Status (2)

Country Link
DE (1) DE102022209914A1 (fr)
WO (1) WO2024061553A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6691729B2 (en) * 2000-10-06 2004-02-17 Kabushiki Kaisha Neriki Valve assembly

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5427158B2 (ja) 2010-10-19 2014-02-26 川崎重工業株式会社 燃料ガス供給充填システム
DE102012206604A1 (de) 2012-04-20 2013-10-24 Hyptec Gmbh Elektromagnetisches Ventil für ein Behälterventil einer Kraftstoffversorgungsanlage
JP6305769B2 (ja) 2014-01-15 2018-04-04 株式会社ジェイテクト 弁装置
DE102016214577A1 (de) 2016-08-05 2018-02-08 Bayerische Motoren Werke Aktiengesellschaft Druckbehältersystem umfassend mindestens einen ersten Druckbehälter und einen zweiten Druckbehälter zum Speichern eines Brennstoffs, insbesondere von Wasserstoff, für ein Fahrzeug
DE102017213521A1 (de) 2017-08-03 2019-02-07 Bayerische Motoren Werke Aktiengesellschaft Ventil-Vorrichtung für einen Speicherbehälter
DE102020108176A1 (de) 2020-03-25 2021-09-30 Bayerische Motoren Werke Aktiengesellschaft Brennstoffversorgungssystem und Kraftfahrzeug
DE102020112830A1 (de) 2020-05-12 2021-11-18 Bayerische Motoren Werke Aktiengesellschaft Steuereinheit und Verfahren zum Betrieb eines Druckbehälter-Ventils eines Druckbehälters
DE102021106038A1 (de) 2021-03-12 2021-05-12 Bayerische Motoren Werke Aktiengesellschaft Druckbehältersystem mit einer Druckbehälterbaugruppe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6691729B2 (en) * 2000-10-06 2004-02-17 Kabushiki Kaisha Neriki Valve assembly

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Publication number Publication date
DE102022209914A1 (de) 2024-03-21

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