WO2024012780A1 - Fuel gas tank system - Google Patents

Fuel gas tank system Download PDF

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Publication number
WO2024012780A1
WO2024012780A1 PCT/EP2023/065670 EP2023065670W WO2024012780A1 WO 2024012780 A1 WO2024012780 A1 WO 2024012780A1 EP 2023065670 W EP2023065670 W EP 2023065670W WO 2024012780 A1 WO2024012780 A1 WO 2024012780A1
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WO
WIPO (PCT)
Prior art keywords
valve
fuel gas
gas tank
shut
spring
Prior art date
Application number
PCT/EP2023/065670
Other languages
German (de)
French (fr)
Inventor
Hans-Christoph Magel
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 WO2024012780A1 publication Critical patent/WO2024012780A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves

Definitions

  • the invention relates to a fuel gas tank system with the features of the preamble of claim 1.
  • Mobile fuel gas tank systems with at least one fuel gas tank for storing fuel gas, for example hydrogen or natural gas, are known.
  • the fuel gas tanks are usually designed as high-pressure tanks.
  • a high pressure tank always requires a shut-off valve to seal off the tank when the vehicle is not in use.
  • Both are usually integrated into a tank unit that can be connected to a fuel gas tank of a fuel gas tank system, with the tank unit being attached as an attachment to the outside of the fuel gas tank.
  • the present invention is based on the object of reducing the installation space requirement of a fuel gas tank system.
  • a fuel gas tank system with at least one fuel gas tank and a tank unit is proposed.
  • a shut-off valve is integrated into the tank unit, which has a magnetic tactor for acting on a lifting magnet armature acted upon by the spring force of a spring.
  • the magnet armature forms a valve member for releasing and closing a valve seat or it is connected to a valve member.
  • the tank unit is integrated into an outlet of the fuel gas tank and the shut-off valve of the tank unit projects into a storage volume of the fuel gas tank, so that at least the magnetic actuator of the shut-off valve is accommodated in the storage volume.
  • the tank unit By integrating the tank unit into the outlet of the fuel gas tank, it does not require any additional installation space. This means that the space required for the fuel gas tank system is reduced.
  • the shut-off valve of the tank unit By integrating the tank unit into the outlet of the fuel gas tank, the shut-off valve of the tank unit is also optimally protected from external influences. Furthermore, the number of high-pressure sealing points can be reduced.
  • the magnetic actuator of the shut-off valve Since at least the magnetic actuator of the shut-off valve is accommodated in the storage volume of the fuel gas tank, it does not have to be designed to be pressure-tight and/or gas-tight. The number of sealing points can thereby be further reduced.
  • the proposed fuel gas tank system is preferably used in a fuel cell vehicle or in a gas vehicle.
  • the valve seat of the shut-off valve is formed by a valve body which is movable relative to the valve member in order to release and close a further valve seat.
  • This enables the shut-off valve to be opened in multiple stages.
  • the valve member In a first stage, the valve member is first lifted out of the first valve seat using magnetic force.
  • the second valve seat opens.
  • the opening of the second valve seat is supported by the fact that the fuel gas flowing out through the first valve seat causes pressure equalization in the first stage, so that essentially only the spring force of the spring has to be overcome to open the second valve seat.
  • Both seats can therefore be opened with just one magnetic coil and with a comparatively low magnetic force. This means that a comparatively small magnetic coil can be used so that the The installation space requirement of the shut-off valve and thus the tank unit is reduced. This means that installation space is saved.
  • opening the second valve seat ensures a sufficiently large opening cross section.
  • the further valve seat preferably has a seat diameter D2 that is larger than a seat diameter D1 of the first valve seat. In this way, an even larger opening cross section can be provided. Since pressure equalization already occurs in the first stage when the shut-off valve is opened in multiple stages, increasing the seat diameter of the second valve seat essentially has no influence on the magnetic force required for opening. The magnetic coil therefore does not have to be made larger.
  • valve member and the valve body are preferably arranged coaxially and biased by the spring in the direction of the valve seats. To close the two valve seats, only one spring is required, so that additional installation space is saved.
  • valve body is accommodated in a valve chamber into which an inlet that can be connected to a storage volume of the fuel gas tank opens from the radial direction. A direct connection between the valve chamber and the storage volume can then be established via the inlet.
  • the tank unit forms the further valve seat and at least one gas line for removing fuel gas and/or for filling it with fuel gas.
  • valve member and the valve body are guided into one another and can be coupled via an annular collar which is formed on an end section of the valve member received in the valve body.
  • a driver function can be implemented via the ring collar.
  • the ring collar arrives after a partial stroke of the Valve member for opening the first valve seat to rest on the valve body, so that it is lifted out of the second valve seat by the valve member.
  • the second valve seat can be opened like the first valve seat using the magnetic force of the magnetic actuator.
  • the nested arrangement of the valve member and valve body helps to save additional space, particularly in the axial direction.
  • valve body is biased in the direction of the valve member by a further spring, the spring force of which is smaller than that of the first spring.
  • the valve body is relieved of the spring force of the spring acting in the closing direction.
  • pressure is equalized via the opened first valve seat, so that - with a time delay - the valve body is lifted out of the second valve seat by means of the additional spring.
  • the second valve seat is opened by means of the spring force of another spring.
  • both valve seats are closed. If the magnetic actuator is energized, a magnetic field is built up, the magnetic force of which acts on the magnetic armature. The magnet armature moves in the direction of the magnet actuator, whereby the valve member is lifted out of the first valve seat and the first valve seat opens. Fuel gas flowing out through the first valve seat causes a pressure equalization, so that the second valve seat can be opened with little force (magnetic force or spring force) with a time delay. This means that a larger opening cross-section is available, which enables a sufficient flow of fuel gas even at low storage pressure. To close the shut-off valve, the current supply to the solenoid coil is stopped, so that the spring returns the valve member and the valve body to their valve seats.
  • the fuel gas tank system according to the invention shown in the figure comprises a tank unit 16, which is integrated into a fuel gas tank 13 of the fuel gas tank system, specifically in the area of a bottleneck-like outlet 15 of the fuel gas tank 13.
  • a tank unit 16 By integrating the tank unit 16 into the fuel gas tank 13, installation space can be saved, so that the installation space requirement of the fuel gas tank system according to the invention decreases.
  • the integration of the tank unit 16 into the fuel gas tank 13 is made possible by the compact structure of the tank unit 16.
  • the tank unit 16 includes a shut-off valve 1, which serves to remove fuel gas from a storage volume 14 of the fuel gas tank 13.
  • a first gas line 17 is integrated into the tank unit 16.
  • the storage volume 14 of the fuel gas tank 13 can be filled with fuel gas via a further gas line 18 of the tank unit 16 arranged parallel thereto.
  • the shut-off valve 1 of the tank unit 16 shown in the figure is arranged at one end of the tank unit 16 so that it protrudes into the storage volume 14 of the fuel gas tank 13.
  • a magnetic actuator 2 for actuating the shut-off valve 1 is surrounded by storage pressure or high pressure, so that it does not have to be sealed pressure-tight or gas-tight to the outside.
  • a sealing ring 9 only needs to be inserted in the area of an electrical connection line 12, which serves to connect the magnetic actuator 2 to an external power source and is led to the outside via the tank unit 16.
  • shut-off valve 1 accommodated in the fuel gas tank 13 is optimally protected from external influences.
  • the magnetic actuator 2 of the shut-off valve 1 acts on a lifting magnet armature 4, which is connected to a bolt-shaped valve member 6.
  • the magnet armature 4 and the valve member 6 are biased towards a valve seat 5 by the spring force of a spring 3.
  • the magnetic actuator 2 has an annular magnetic coil 2.1 which partially surrounds the magnet armature 4 and is accommodated in an outer pole body 2.2. If the magnetic coil 2.1 is energized, a magnetic field, the magnetic force of which moves the magnet armature 4 including the valve member 6 in the direction of the magnetic actuator 2.
  • the valve seat 5 opens. Since the valve seat 5 has a comparatively small seat diameter D1, only a small magnetic force is required to open it.
  • the valve seat 5 is formed by a valve body 7, which has a bore 7.2 for this purpose.
  • An end section 6.1 of the valve member 6 is inserted into the valve body 7 via a further bore 7.1.
  • an annular collar 6.2 is formed, which comes into contact with the valve body 7 after a partial stroke of the valve member 6.
  • the valve body 7 is then carried along and thereby lifted by another valve seat 8.
  • This has a seat diameter D2 that is significantly larger than the seat diameter D1 of the first valve seat 5. Nevertheless, the magnetic force of the magnetic actuator 2 is sufficient to lift the valve body 7 out of the second valve seat 8, since essentially only the spring force of the spring 3 has to be overcome.
  • fuel gas flows out of a valve chamber 10, which is connected to the storage volume 14 via an inlet 11, into the gas line 17, so that pressure equalization is achieved.
  • a further spring (not shown) can also be provided, by means of which the valve body 7 is biased in the direction of the valve member 6.
  • the opening of the second valve seat 8 is then not effected with the aid of the magnetic force of the magnetic actuator 2, but rather by means of the spring force of the further spring.
  • the valve member 6 and the valve body 7 can be made simpler in this case.

Abstract

The invention relates to a fuel gas tank system having at least one fuel gas tank (13) and a tank unit (16), wherein a shut-off valve (1) is integrated in the tank unit (16), the shut-off valve (1) comprising a magnetic actuator (2) for acting upon a magnet armature (4), which is acted upon by the spring force of a spring (3), can perform a stroke movement and forms a valve member (6), or is connected to a valve member (6), for opening up and closing a valve seat (5). According to the invention, the tank unit (16) is integrated in an outlet (15) of the fuel gas tank (13), and the shut-off valve (1) of the tank unit (16) projects into a storage volume (14) of the fuel gas tank (13) such that at least the magnetic actuator (2) of the shut-off valve (1) is accommodated in the storage volume (14).

Description

Beschreibung
Figure imgf000002_0001
Description
Figure imgf000002_0001
Die Erfindung betrifft ein Brenngastanksystem mit den Merkmalen des Oberbegriffs des Anspruchs 1. The invention relates to a fuel gas tank system with the features of the preamble of claim 1.
Stand der Technik State of the art
Bekannt sind mobile Brenngastanksysteme mit mindestens einem Brenngastank zur Speicherung von Brenngas, beispielsweise Wasserstoff oder Erdgas. Die Brenngastanks sind dabei in der Regel als Hochdrucktanks ausgelegt. Ein Hochdrucktank benötigt immer ein Absperrventil, um den Tank dicht abzusperren, wenn das Fahrzeug nicht in Betrieb ist. Zudem muss eine Zuleitung zum Befüllen des Tanks vorhanden sein. Beides ist üblicherweise in eine Tankeinheit integriert, die mit einem Brenngastank eines Brenngastanksystems verbindbar ist, wobei die Tankeinheit als Anbauteil außen am Brenngastank angebracht wird. Mobile fuel gas tank systems with at least one fuel gas tank for storing fuel gas, for example hydrogen or natural gas, are known. The fuel gas tanks are usually designed as high-pressure tanks. A high pressure tank always requires a shut-off valve to seal off the tank when the vehicle is not in use. There must also be a supply line for filling the tank. Both are usually integrated into a tank unit that can be connected to a fuel gas tank of a fuel gas tank system, with the tank unit being attached as an attachment to the outside of the fuel gas tank.
Ausgehend von dem vorstehend genannten Stand der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, den Bauraumbedarf eines Brenngastanksystems zu senken. Based on the above-mentioned prior art, the present invention is based on the object of reducing the installation space requirement of a fuel gas tank system.
Zur Lösung der Aufgabe wird das Brenngastanksystem mit den Merkmalen des Anspruchs 1 vorgeschlagen. Vorteilhafte Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen. To solve the problem, the fuel gas tank system with the features of claim 1 is proposed. Advantageous developments of the invention can be found in the subclaims.
Offenbarung der Erfindung Disclosure of the invention
Vorgeschlagen wird ein Brenngastanksystem mit mindestens einem Brenngastank und einer Tankeinheit. In die Tankeinheit ist ein Absperrventil integriert, das einen Magne- taktor zur Einwirkung auf einen von der Federkraft einer Feder beaufschlagten, hubbeweglichen Magnetanker umfasst. Der Magnetanker bildet zum Freigeben und Verschließen eines Ventilsitzes ein Ventilglied aus oder er ist mit einem Ventilglied verbunden. Erfindungsgemäß ist die Tankeinheit in einen Auslass des Brenngastanks integriert und das Absperrventil der Tankeinheit ragt in ein Speichervolumen des Brenngastanks hinein, so dass zumindest der Magnetaktor des Absperrventils im Speichervolumen aufgenommen ist. A fuel gas tank system with at least one fuel gas tank and a tank unit is proposed. A shut-off valve is integrated into the tank unit, which has a magnetic tactor for acting on a lifting magnet armature acted upon by the spring force of a spring. The magnet armature forms a valve member for releasing and closing a valve seat or it is connected to a valve member. According to the invention, the tank unit is integrated into an outlet of the fuel gas tank and the shut-off valve of the tank unit projects into a storage volume of the fuel gas tank, so that at least the magnetic actuator of the shut-off valve is accommodated in the storage volume.
Durch die Integration der Tankeinheit in den Auslass des Brenngastanks benötigt diese keinen zusätzlichen Bauraum. Das heißt, dass der Bauraumbedarf des Brenngastanksystems reduziert wird. Durch die Integration der Tankeinheit in den Auslass des Brenngastanks ist zudem das Absperrventil der Tankeinheit optimal vor äußeren Einwirkungen geschützt. Ferner kann die Anzahl der Hochdruckdichtstellen reduziert werden. By integrating the tank unit into the outlet of the fuel gas tank, it does not require any additional installation space. This means that the space required for the fuel gas tank system is reduced. By integrating the tank unit into the outlet of the fuel gas tank, the shut-off valve of the tank unit is also optimally protected from external influences. Furthermore, the number of high-pressure sealing points can be reduced.
Da zumindest der Magnetaktor des Absperrventils im Speichervolumen des Brenngastanks aufgenommen ist, muss er nicht druckfest und/oder gasdicht ausgeführt werden. Die Anzahl der Dichtstellen kann dadurch weiter reduziert werden. Since at least the magnetic actuator of the shut-off valve is accommodated in the storage volume of the fuel gas tank, it does not have to be designed to be pressure-tight and/or gas-tight. The number of sealing points can thereby be further reduced.
Das vorgeschlagene Brenngastanksystem gelangt vorzugsweise in einem Brennstoffzellenfahrzeug oder in einem Gasfahrzeug zum Einsatz. The proposed fuel gas tank system is preferably used in a fuel cell vehicle or in a gas vehicle.
Gemäß einer bevorzugten Ausführungsform der Erfindung wird der Ventilsitz des Absperrventils durch einen Ventilkörper ausgebildet, der zum Freigeben und Verschließen eines weiteren Ventilsitzes gegenüber dem Ventilglied hubbeweglich ist. Dies ermöglicht ein mehrstufiges Öffnen des Absperrventils. In einer ersten Stufe wird zunächst das Ventilglied mittels Magnetkraft aus dem ersten Ventilsitz gehoben. In einer zweiten Stufe, das heißt zeitversetzt, öffnet der zweite Ventilsitz. Das Öffnen des zweiten Ventilsitzes wird dadurch unterstützt, dass durch das über den ersten Ventilsitz ausströmende Brenngas bereits in der ersten Stufe ein Druckausgleich bewirkt wird, so dass zum Öffnen des zweiten Ventilsitzes im Wesentlichen nur die Federkraft der Feder überwunden werden muss. Das Öffnen beider Sitze kann somit mit nur einer Magnetspule und mit einer vergleichsweise geringen Magnetkraft bewirkt werden. Das heißt, dass eine vergleichsweise kleine Magnetspule verwendet werden kann, so dass der Bauraumbedarf des Absperrventils und damit der Tankeinheit gesenkt wird. Das heißt, dass Bauraum eingespart wird. Zugleich ist mit Öffnen des zweiten Ventilsitzes ein ausreichend großer Öffnungsquerschnitt sichergestellt. According to a preferred embodiment of the invention, the valve seat of the shut-off valve is formed by a valve body which is movable relative to the valve member in order to release and close a further valve seat. This enables the shut-off valve to be opened in multiple stages. In a first stage, the valve member is first lifted out of the first valve seat using magnetic force. In a second stage, i.e. with a time delay, the second valve seat opens. The opening of the second valve seat is supported by the fact that the fuel gas flowing out through the first valve seat causes pressure equalization in the first stage, so that essentially only the spring force of the spring has to be overcome to open the second valve seat. Both seats can therefore be opened with just one magnetic coil and with a comparatively low magnetic force. This means that a comparatively small magnetic coil can be used so that the The installation space requirement of the shut-off valve and thus the tank unit is reduced. This means that installation space is saved. At the same time, opening the second valve seat ensures a sufficiently large opening cross section.
Bevorzugt weist der weitere Ventilsitz einen Sitzdurchmesser D2 auf, der größer als ein Sitzdurchmesser D1 des ersten Ventilsitzes ist. Auf diese Weise kann ein noch größerer Öffnungsquerschnitt bereitgestellt werden. Da beim mehrstufigen Öffnen des Absperrventils bereits in der ersten Stufe ein Druckausgleich erfolgt, hat die Vergrößerung des Sitzdurchmessers des zweiten Ventilsitzes im Wesentlichen keinen Einfluss auf die zum Öffnen benötigte Magnetkraft. Die Magnetspule muss demnach nicht größer ausgelegt werden. The further valve seat preferably has a seat diameter D2 that is larger than a seat diameter D1 of the first valve seat. In this way, an even larger opening cross section can be provided. Since pressure equalization already occurs in the first stage when the shut-off valve is opened in multiple stages, increasing the seat diameter of the second valve seat essentially has no influence on the magnetic force required for opening. The magnetic coil therefore does not have to be made larger.
Ferner bevorzugt sind das Ventilglied und der Ventilkörper koaxial angeordnet und durch die Feder in Richtung der Ventilsitze vorgespannt. Zum Schließen der beiden Ventilsitze wird demnach nur eine Feder benötigt, so dass weiterer Bauraum eingespart wird. Furthermore, the valve member and the valve body are preferably arranged coaxially and biased by the spring in the direction of the valve seats. To close the two valve seats, only one spring is required, so that additional installation space is saved.
Des Weiteren wird vorgeschlagen, dass der Ventilkörper in einem Ventilraum aufgenommen ist, in den aus radialer Richtung ein mit einem Speichervolumen des Brenngastanks verbindbarer Zulauf mündet. Über den Zulauf kann dann eine direkte Verbindung des Ventilraums mit dem Speichervolumen hergestellt werden. Furthermore, it is proposed that the valve body is accommodated in a valve chamber into which an inlet that can be connected to a storage volume of the fuel gas tank opens from the radial direction. A direct connection between the valve chamber and the storage volume can then be established via the inlet.
In Weiterbildung der Erfindung wird ferner vorgeschlagen, dass die Tankeinheit den weiteren Ventilsitz sowie mindestens eine Gasleitung zur Entnahme von Brenngas und/oder zum Befüllen mit Brenngas ausbildet. Durch diese Maßnahmen kann die Tankeinheit noch kompakter gestaltet werden. Denn zum Einen benötigt das Absperrventil kein separates Ventilgehäuse. Zum Anderen kann in die Tankeinheit eine Füllleitung ggf. mit einem weiteren Ventil und/oder Sensor integriert werden. Die Funktionsintegration wiederum hilft Bauraum einzusparen. In a further development of the invention, it is further proposed that the tank unit forms the further valve seat and at least one gas line for removing fuel gas and/or for filling it with fuel gas. These measures allow the tank unit to be made even more compact. On the one hand, the shut-off valve does not require a separate valve housing. On the other hand, a filling line can be integrated into the tank unit, if necessary with another valve and/or sensor. The functional integration in turn helps to save installation space.
Vorteilhafterweise sind das Ventilglied und der Ventilkörper ineinander geführt und über einen Ringbund koppelbar, der an einem im Ventilkörper aufgenommenen Endabschnitt des Ventilglieds ausgebildet ist. Über den Ringbund kann eine Mitnehmerfunktion realisiert werden. Idealerweise gelangt der Ringbund nach einem Teilhub des Ventilglieds zum Öffnen des ersten Ventilsitzes zur Anlage am Ventilkörper, so dass dieser durch das Ventilglied aus dem zweiten Ventilsitz gehoben wird. Der zweite Ventilsitz kann in diesem Fall wie der erste Ventilsitz mittels der Magnetkraft des Magnetaktors geöffnet werden. Die verschachtelte Anordnung von Ventilglied und Ventilkörper hilft zusätzlichen Bauraum einzusparen, und zwar insbesondere in axialer Richtung. Advantageously, the valve member and the valve body are guided into one another and can be coupled via an annular collar which is formed on an end section of the valve member received in the valve body. A driver function can be implemented via the ring collar. Ideally, the ring collar arrives after a partial stroke of the Valve member for opening the first valve seat to rest on the valve body, so that it is lifted out of the second valve seat by the valve member. In this case, the second valve seat can be opened like the first valve seat using the magnetic force of the magnetic actuator. The nested arrangement of the valve member and valve body helps to save additional space, particularly in the axial direction.
Alternativ wird vorgeschlagen, dass der Ventilkörper in Richtung des Ventilglieds durch eine weitere Feder vorgespannt ist, deren Federkraft kleiner als die der ersten Feder ist. Nach einem Teilhub des Ventilglieds ist der Ventilkörper von der Federkraft der in Schließrichtung wirkenden Feder entlastet. Zugleich erfolgt über den geöffneten ersten Ventilsitz ein Druckausgleich, so dass - zeitlich versetzt - der Ventilkörper mittels der weiteren Feder aus dem zweiten Ventilsitz gehoben wird. Der zweite Ventilsitz wird in diesem Fall mittels der Federkraft einer weiteren Feder geöffnet. Dadurch, dass die Federkraft der weiteren Feder kleiner als die der in Schließrichtung wirkenden ersten Feder gewählt ist, ist ein sicheres Schließen des Absperrventils gewährleistet. Alternatively, it is proposed that the valve body is biased in the direction of the valve member by a further spring, the spring force of which is smaller than that of the first spring. After a partial stroke of the valve member, the valve body is relieved of the spring force of the spring acting in the closing direction. At the same time, pressure is equalized via the opened first valve seat, so that - with a time delay - the valve body is lifted out of the second valve seat by means of the additional spring. In this case, the second valve seat is opened by means of the spring force of another spring. The fact that the spring force of the additional spring is selected to be smaller than that of the first spring acting in the closing direction ensures that the shut-off valve closes securely.
Im Ruhezustand, das heißt bei unbestromtem Magnetaktor sind beide Ventilsitze geschlossen. Wird der Magnetaktor bestromt, baut sich ein Magnetfeld auf, dessen Magnetkraft auf den Magnetanker wirkt. Der Magnetanker bewegt sich in Richtung des Magnetaktors, wobei das Ventilglied aus dem ersten Ventilsitz gehoben wird und der erste Ventilsitz öffnet. Über den ersten Ventilsitz ausströmendes Brenngas bewirkt einen Druckausgleich, so dass zeitlich versetzt der zweite Ventilsitz mit geringer Kraft (Magnetkraft oder Federkraft) geöffnet werden kann. Dadurch steht ein größerer Öff- nungsquerschnitt zur Verfügung, der auch bei geringem Speicherdruck einen ausreichenden Durchfluss von Brenngas ermöglicht. Zum Schließen des Absperrventils wird die Bestromung der Magnetspule beendet, so dass die Feder das Ventilglied und den Ventilkörper in ihre Ventilsitze zurückstellt. In the idle state, i.e. when the magnetic actuator is de-energized, both valve seats are closed. If the magnetic actuator is energized, a magnetic field is built up, the magnetic force of which acts on the magnetic armature. The magnet armature moves in the direction of the magnet actuator, whereby the valve member is lifted out of the first valve seat and the first valve seat opens. Fuel gas flowing out through the first valve seat causes a pressure equalization, so that the second valve seat can be opened with little force (magnetic force or spring force) with a time delay. This means that a larger opening cross-section is available, which enables a sufficient flow of fuel gas even at low storage pressure. To close the shut-off valve, the current supply to the solenoid coil is stopped, so that the spring returns the valve member and the valve body to their valve seats.
Eine bevorzugte Ausführungsform der Erfindung wird nachfolgend anhand der beigefügten Zeichnung näher erläutert. Diese zeigt einen schematischen Längsschnitt durch ein erfindungsgemäßes Brenngastanksystem im Bereich eines Absperrventils, das in einen Brenngastank des Brenngastanksystems integriert ist. Ausführliche Beschreibung der Zeichnung A preferred embodiment of the invention is explained in more detail below with reference to the accompanying drawing. This shows a schematic longitudinal section through a fuel gas tank system according to the invention in the area of a shut-off valve, which is integrated into a fuel gas tank of the fuel gas tank system. Detailed description of the drawing
Das in der Figur dargestellte erfindungsgemäße Brenngastanksystem umfasst eine Tankeinheit 16, die in einen Brenngastank 13 des Brenngastanksystems integriert ist, und zwar im Bereich eines flaschenhalsartigen Auslasses 15 des Brenngastanks 13. Durch die Integration der Tankeinheit 16 in den Brenngastank 13 kann Bauraum eingespart werden, so dass der Bauraumbedarf des erfindungsgemäßen Brenngastanksystems sinkt. Die Integration der Tankeinheit 16 in den Brenngastank 13 wird ermöglicht durch den kompakten Aufbau der Tankeinheit 16. The fuel gas tank system according to the invention shown in the figure comprises a tank unit 16, which is integrated into a fuel gas tank 13 of the fuel gas tank system, specifically in the area of a bottleneck-like outlet 15 of the fuel gas tank 13. By integrating the tank unit 16 into the fuel gas tank 13, installation space can be saved, so that the installation space requirement of the fuel gas tank system according to the invention decreases. The integration of the tank unit 16 into the fuel gas tank 13 is made possible by the compact structure of the tank unit 16.
Die Tankeinheit 16 umfasst ein Absperrventil 1 , das der Entnahme von Brenngas aus einem Speichervolumen 14 des Brenngastanks 13 dient. Hierzu ist in die Tankeinheit 16 eine erste Gasleitung 17 integriert. Über eine parallel hierzu angeordnete weitere Gasleitung 18 der Tankeinheit 16 kann das Speichervolumen 14 des Brenngastanks 13 mit Brenngas befüllt werden. The tank unit 16 includes a shut-off valve 1, which serves to remove fuel gas from a storage volume 14 of the fuel gas tank 13. For this purpose, a first gas line 17 is integrated into the tank unit 16. The storage volume 14 of the fuel gas tank 13 can be filled with fuel gas via a further gas line 18 of the tank unit 16 arranged parallel thereto.
Das Absperrventil 1 der in der Figur dargestellten Tankeinheit 16 ist an einem Ende der Tankeinheit 16 angeordnet, so dass es in das Speichervolumen 14 des Brenngastanks 13 hineinragt. Ein Magnetaktor 2 zur Betätigung des Absperrventils 1 ist von Speicherdruck bzw. Hochdruck umgeben, so dass er nicht nach außen druckfest bzw. gasdicht abgedichtet werden muss. Lediglich im Bereich einer elektrischen Anschlussleitung 12, die dem Anschluss des Magnetaktors 2 an eine externe Stromquelle dient und über die Tankeinheit 16 nach außen geführt ist, muss ein Dichtring 9 eingesetzt werden. Durch die Integration der Tankeinheit 16, insbesondere des Absperrventils 1 der Tankeinheit 16, in den Brenngastank 13 kann somit die Anzahl der Dichtstellen minimiert werden.The shut-off valve 1 of the tank unit 16 shown in the figure is arranged at one end of the tank unit 16 so that it protrudes into the storage volume 14 of the fuel gas tank 13. A magnetic actuator 2 for actuating the shut-off valve 1 is surrounded by storage pressure or high pressure, so that it does not have to be sealed pressure-tight or gas-tight to the outside. A sealing ring 9 only needs to be inserted in the area of an electrical connection line 12, which serves to connect the magnetic actuator 2 to an external power source and is led to the outside via the tank unit 16. By integrating the tank unit 16, in particular the shut-off valve 1 of the tank unit 16, into the fuel gas tank 13, the number of sealing points can be minimized.
Ferner ist das im Brenngastank 13 aufgenommene Absperrventil 1 optimal vor äußeren Einwirkungen geschützt. Furthermore, the shut-off valve 1 accommodated in the fuel gas tank 13 is optimally protected from external influences.
Der Magnetaktor 2 des Absperrventils 1 wirkt auf einen hubbeweglichen Magnetanker 4 ein, der mit einem bolzenförmigen Ventilglied 6 verbunden ist. Der Magnetanker 4 und das Ventilglied 6 sind durch die Federkraft einer Feder 3 in Richtung eines Ventilsitzes 5 vorgespannt. Der Magnetaktor 2 weist vorliegend eine den Magnetanker 4 abschnittsweise umgebende ringförmige Magnetspule 2.1 auf, die in einem Außenpolkörper 2.2 aufgenommen ist. Wird die Magnetspule 2.1 bestromt, bildet sich ein Magnet- feld aus, dessen Magnetkraft den Magnetanker 4 einschließlich des Ventilglieds 6 in Richtung des Magnetaktors 2 bewegt. Dabei öffnet sich der Ventilsitz 5. Da der Ventilsitz 5 einen vergleichsweise kleinen Sitzdurchmesser D1 aufweist, wird zum Öffnen nur eine geringe Magnetkraft benötigt. The magnetic actuator 2 of the shut-off valve 1 acts on a lifting magnet armature 4, which is connected to a bolt-shaped valve member 6. The magnet armature 4 and the valve member 6 are biased towards a valve seat 5 by the spring force of a spring 3. In the present case, the magnetic actuator 2 has an annular magnetic coil 2.1 which partially surrounds the magnet armature 4 and is accommodated in an outer pole body 2.2. If the magnetic coil 2.1 is energized, a magnetic field, the magnetic force of which moves the magnet armature 4 including the valve member 6 in the direction of the magnetic actuator 2. The valve seat 5 opens. Since the valve seat 5 has a comparatively small seat diameter D1, only a small magnetic force is required to open it.
Der Ventilsitz 5 wird durch einem Ventilkörper 7 ausgebildet, der hierzu eine Bohrung 7.2 aufweist. Über eine weitere Bohrung 7.1 ist ein Endabschnitt 6.1 des Ventilglieds 6 in den Ventilkörper 7 eingeführt. An dem Endabschnitt 6.1 ist ein Ringbund 6.2 ausgebildet, der nach einem Teilhub des Ventilglieds 6 zur Anlage am Ventilkörper 7 gelangt. Mit Fortsetzung des Hubs des Ventilglieds 6 wird dann der Ventilkörper 7 mitgeführt und dabei von einem weiteren Ventilsitz 8 gehoben. Dieser weist einen Sitzdurchmesser D2 auf, der deutlich größer als der Sitzdurchmesser D1 des ersten Ventilsitzes 5 ist. Dennoch reicht die Magnetkraft des Magnetaktors 2 aus, den Ventilkörper 7 aus dem zweiten Ventilsitz 8 zu heben, da im Wesentlichen nur die Federkraft der Feder 3 überwunden werden muss. Denn bereits mit Öffnen des ersten Ventilsitzes 5 strömt Brenngas aus einem Ventilraum 10, der über einen Zulauf 11 mit dem Speichervolumen 14 verbunden ist, in die Gasleitung 17 ab, so dass ein Druckausgleich bewirkt wird. The valve seat 5 is formed by a valve body 7, which has a bore 7.2 for this purpose. An end section 6.1 of the valve member 6 is inserted into the valve body 7 via a further bore 7.1. At the end section 6.1, an annular collar 6.2 is formed, which comes into contact with the valve body 7 after a partial stroke of the valve member 6. As the stroke of the valve member 6 continues, the valve body 7 is then carried along and thereby lifted by another valve seat 8. This has a seat diameter D2 that is significantly larger than the seat diameter D1 of the first valve seat 5. Nevertheless, the magnetic force of the magnetic actuator 2 is sufficient to lift the valve body 7 out of the second valve seat 8, since essentially only the spring force of the spring 3 has to be overcome. As soon as the first valve seat 5 is opened, fuel gas flows out of a valve chamber 10, which is connected to the storage volume 14 via an inlet 11, into the gas line 17, so that pressure equalization is achieved.
Anstelle der dargestellten mechanischen Kopplung des Ventilglieds 6 und des Ventilkörpers 7 über den Ringbund 6.2 kann auch eine weitere Feder (nicht dargestellt) vorgesehen sein, mittels welcher der Ventilkörper 7 in Richtung des Ventilglieds 6 vorgespannt ist. Das Öffnen des zweiten Ventilsitzes 8 wird dann nicht mit Hilfe der Magnetkraft des Magnetaktors 2, sondern mittels der Federkraft der weiteren Feder bewirkt. Das Ventilglied 6 und der Ventilkörper 7 können in diesem Fall einfacher ausgeführt sein. Instead of the illustrated mechanical coupling of the valve member 6 and the valve body 7 via the annular collar 6.2, a further spring (not shown) can also be provided, by means of which the valve body 7 is biased in the direction of the valve member 6. The opening of the second valve seat 8 is then not effected with the aid of the magnetic force of the magnetic actuator 2, but rather by means of the spring force of the further spring. The valve member 6 and the valve body 7 can be made simpler in this case.

Claims

Ansprüche Expectations
1 . Brenngastanksystem mit mindestens einem Brenngastank (13) und einer Tankeinheit (16), wobei in die Tankeinheit (16) ein Absperrventil (1) integriert ist, das einen Magnetaktor (2) zur Einwirkung auf einen von der Federkraft einer Feder (3) beaufschlagten, hubbeweglichen Magnetanker (4) umfasst, der zum Freigeben und Verschließen eines Ventilsitzes (5) ein Ventilglied (6) ausbildet oder mit einem Ventilglied (6) verbunden ist, dadurch gekennzeichnet, dass die Tankeinheit (16) in einen Auslass (15) des Brenngastanks (13) integriert ist und das Absperrventil (1) der Tankeinheit (16) in ein Speichervolumen (14) des Brenngastanks (13) hineinragt, so dass zumindest der Magnetaktor (2) des Absperrventils (1) im Speichervolumen (14) aufgenommen ist. 1 . Fuel gas tank system with at least one fuel gas tank (13) and a tank unit (16), a shut-off valve (1) being integrated into the tank unit (16), which has a magnetic actuator (2) to act on a magnet acted upon by the spring force of a spring (3), comprises a lifting magnet armature (4), which forms a valve member (6) for releasing and closing a valve seat (5) or is connected to a valve member (6), characterized in that the tank unit (16) in an outlet (15) of the fuel gas tank (13) is integrated and the shut-off valve (1) of the tank unit (16) protrudes into a storage volume (14) of the fuel gas tank (13), so that at least the magnetic actuator (2) of the shut-off valve (1) is accommodated in the storage volume (14).
2. Brenngastanksystem nach Anspruch 1 , dadurch gekennzeichnet, dass der Ventilsitz (5) durch einen Ventilkörper (7) ausgebildet wird, der zum Freigeben und Verschließen eines weiteren Ventilsitzes (8) gegenüber dem Ventilglied (6) hubbeweglich ist. 2. Fuel gas tank system according to claim 1, characterized in that the valve seat (5) is formed by a valve body (7) which is movable relative to the valve member (6) to release and close a further valve seat (8).
3. Brenngastanksystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der weitere Ventilsitz (8) einen Sitzdurchmesser (D2) aufweist, der größer als ein Sitzdurchmesser (D1) des ersten Ventilsitzes (5) ist. 3. Fuel gas tank system according to claim 1 or 2, characterized in that the further valve seat (8) has a seat diameter (D2) which is larger than a seat diameter (D1) of the first valve seat (5).
4. Brenngastanksystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Ventilglied (6) und der Ventilkörper (7) koaxial angeordnet und durch die Feder (3) in Richtung der Ventilsitze (5, 8) vorgespannt sind. 4. Fuel gas tank system according to one of the preceding claims, characterized in that the valve member (6) and the valve body (7) are arranged coaxially and are biased by the spring (3) in the direction of the valve seats (5, 8).
5. Brenngastanksystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Ventilkörper (7) in einem Ventilraum (10) aufgenommen ist, in den aus radialer Richtung ein mit einem Speichervolumen (14) des Brenngastanks (13) verbindbarer Zulauf (11) mündet. 5. Fuel gas tank system according to one of the preceding claims, characterized in that the valve body (7) is accommodated in a valve chamber (10), into which an inlet (11) which can be connected to a storage volume (14) of the fuel gas tank (13) opens from the radial direction .
6. Brenngastanksystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Tankeinheit (16) den weiteren Ventilsitz (8) sowie mindestens eine Gasleitung (17, 18) zur Entnahme von Brenngas und/oder zum Befül- len mit Brenngas ausbildet. 6. Fuel gas tank system according to one of the preceding claims, characterized in that the tank unit (16) forms the further valve seat (8) and at least one gas line (17, 18) for removing fuel gas and / or for filling with fuel gas.
7. Brenngastanksystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Ventilglied (6) und der Ventilkörper (7) ineinander geführt und über einen Ringbund (6.2) koppelbar sind, wobei der Ringbund (6.2) an ei- nem im Ventilkörper (7) aufgenommenen Endabschnitt (6.1) des Ventilglieds (6) ausgebildet ist. 7. Fuel gas tank system according to one of the preceding claims, characterized in that the valve member (6) and the valve body (7) are guided into one another and can be coupled via an annular collar (6.2), the annular collar (6.2) being attached to one in the valve body (7 ) recorded end section (6.1) of the valve member (6) is formed.
8. Brenngastanksystemnach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Ventilkörper (7) in Richtung des Ventilglieds (6) durch eine weitere Feder (9) vorgespannt ist, deren Federkraft kleiner als die der ersten Feder (3) ist. 8. Fuel gas tank system according to one of claims 1 to 6, characterized in that the valve body (7) is biased in the direction of the valve member (6) by a further spring (9), the spring force of which is smaller than that of the first spring (3).
PCT/EP2023/065670 2022-07-15 2023-06-12 Fuel gas tank system WO2024012780A1 (en)

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DE102022207249.9A DE102022207249A1 (en) 2022-07-15 2022-07-15 Fuel gas tank system

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020096212A1 (en) * 2001-01-09 2002-07-25 Akira Yamada High pressure gas supplying system
US20030066836A1 (en) * 2001-09-19 2003-04-10 Samtech Corporation High-pressure tank apparatus
US7337798B2 (en) * 2003-08-28 2008-03-04 Toyota Jidosha Kabushiki Kaisha Gas supply apparatus
US20090014089A1 (en) * 2006-03-06 2009-01-15 Toyota Jidosha Kabushiki Kaisha Valve, Valve Controller, and Fuel Cell System
US8413951B2 (en) * 2006-03-02 2013-04-09 Kabushiki Kaisha Kawasaki Precision Machinery Valve device
KR101407015B1 (en) * 2012-06-04 2014-06-12 영도산업 주식회사 Fluid Control Valve Assembly
US20140239207A1 (en) * 2013-02-26 2014-08-28 Kawasaki Jukogyo Kabushiki Kaisha Valve device
US20220042652A1 (en) * 2018-12-13 2022-02-10 Robert Bosch Gmbh Method for operating a tank device for storing compressed fluids

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020096212A1 (en) * 2001-01-09 2002-07-25 Akira Yamada High pressure gas supplying system
US20030066836A1 (en) * 2001-09-19 2003-04-10 Samtech Corporation High-pressure tank apparatus
US7337798B2 (en) * 2003-08-28 2008-03-04 Toyota Jidosha Kabushiki Kaisha Gas supply apparatus
US8413951B2 (en) * 2006-03-02 2013-04-09 Kabushiki Kaisha Kawasaki Precision Machinery Valve device
US20090014089A1 (en) * 2006-03-06 2009-01-15 Toyota Jidosha Kabushiki Kaisha Valve, Valve Controller, and Fuel Cell System
KR101407015B1 (en) * 2012-06-04 2014-06-12 영도산업 주식회사 Fluid Control Valve Assembly
US20140239207A1 (en) * 2013-02-26 2014-08-28 Kawasaki Jukogyo Kabushiki Kaisha Valve device
US20220042652A1 (en) * 2018-12-13 2022-02-10 Robert Bosch Gmbh Method for operating a tank device for storing compressed fluids

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