SHUT-OFF VALVE FOR A PRESSURIZED-GAS VESSEL, PRESSURIZED-GAS VESSEL

Abstract

The invention relates to a shut-off valve (1) for a pressurized-gas vessel, comprising a valve closing body (2) which can perform stroke movements and which is preloaded by the spring force of a closing spring (3) against a valve seat (4), such that, when the valve closing body (2) is in a closed position, a connection of a valve inlet (5) to a valve outlet (6) is shut off, and furthermore comprising an actuator arrangement (7) for opening the valve closing body (2). According to the invention, the actuator arrangement (7) interacts with an actuating element (8) which is arranged spaced apart from and coaxial with respect to the valve closing body (2) and which is movable by means of the actuator arrangement (7) in the direction of the valve closing body (2), such that, when the actuating element (8) abuts against the valve closing body (2), an opening impulse can be generated. The invention furthermore relates to a pressurized-gas vessel having a shut-off valve (1) according to the invention.

Claims

1. A shut-off valve (1) for a pressurized-gas vessel, the shut-off valve (1) comprising a valve closing body (2) which is configured to perform stroke movements and which is preloaded against a valve seat (4) by the spring force of a closing spring (3), with the result that, when the valve closing body (2) is in a closed position, a connection of a valve inlet (5) to a valve outlet (6) is shut off, and furthermore comprising an actuator arrangement (7) for opening the valve closing body (2), wherein the actuator arrangement (7) interacts with an actuating element (8) which is arranged at a distance from and coaxially with the valve closing body (2) and which is configured to be moved in a direction of the valve closing body (2) by the actuator arrangement (7), such that, when the actuating element (8) strikes the valve closing body (2), an opening momentum is generated.

2. The shut-off valve (1) as claimed in claim 1, wherein the actuator arrangement (7) is preloaded by the spring force of a return spring (9), wherein the spring force of the return spring (9) acts counter to a direction of force of the actuator arrangement (7).

3. The shut-off valve (1) as claimed in claim 1, wherein the actuator arrangement (7) comprises a linearly acting actuator.

4. The shut-off valve (1) as claimed in claim 1, wherein the actuating element (8) is a push rod and/or is manufactured from a magnetic material at least in some region or regions or in part.

5. The shut-off valve (1) as claimed in claim 1, wherein the actuator arrangement (7) comprises an actuator chamber (10), which is sealed with respect to a region (11) which carries pressurized gas and is configured to be vented via a venting channel (12).

6. The shut-off valve (1) as claimed in claim 1, wherein an opening stroke of the valve closing body (2) is limited by a stop (13), and an electromagnet (14) for holding the valve closing body (2) in an open position is arranged in the region of the stop (13).

7. The shut-off valve (1) as claimed in claim 1, wherein the valve closing body (2) and/or the valve seat (4) are/is of conical design, at least in some section or sections.

8. The shut-off valve (1) as claimed in claim 1, wherein the valve closing body (2) is guided by the closing spring (3) and/or a guide cage.

9. The shut-off valve (1) as claimed in claim 1, wherein the valve inlet (5) is connected or is configured to be connected to the pressurized-gas vessel, with the result that high pressure prevails in the valve inlet (5).

10. A pressurized-gas vessel having a shut-off valve (1) as claimed in claim 1.

11. The shut-off valve (1) as claimed in claim 1, wherein the actuating element (8) is preloaded by the spring force of a return spring (9), wherein the spring force of the return spring (9) acts counter to a direction of force of the actuator arrangement (7).

12. The shut-off valve (1) as claimed in claim 2, wherein the actuating element (8) is preloaded by the spring force of a return spring (9), wherein the spring force of the return spring (9) acts counter to a direction of force of the actuator arrangement (7).

13. The shut-off valve (1) as claimed in claim 12, wherein the actuator arrangement (7) comprises a linearly acting actuator, which includes a magnet.

14. The shut-off valve (1) as claimed in claim 12, wherein the actuator arrangement (7) comprises a linearly acting actuator, which includes a piezoelectric actuator.

15. The shut-off valve (1) as claimed in claim 12, wherein the actuator arrangement (7) comprises a linearly acting actuator, which includes an eddy current actuator.

16. The shut-off valve (1) as claimed in claim 4, wherein the actuating element (8) is manufactured from a magnetic material at least in some region or regions or in part.

17. The shut-off valve (1) as claimed in claim 1, wherein the actuating element (8) is manufactured from a magnetic material at least in some region or regions or in part.

18. The shut-off valve (1) as claimed in claim 1, wherein the actuator arrangement (7) comprises an actuator chamber (10), which is connected to a region (11) which carries pressurized gas.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] A preferred embodiment of the invention is explained in greater detail below with reference to the appended drawings. More specifically:

[0020] FIG. 1 shows a schematic longitudinal section through a shut-off valve according to the invention in the closed position,

[0021] FIG. 2 shows a schematic longitudinal section through the shut-off valve of FIG. 1 when the actuator is activated, and

[0022] FIG. 3 shows a schematic longitudinal section through the shut-off valve of FIG. 1 in the open position.

DETAILED DESCRIPTION

[0023] The shut-off valve 1 illustrated in FIGS. 1 to 3 has a valve closing body 2 which can be moved back and forth between a valve seat 4 and a stop 13. By means of the spring force of a closing spring 3, the valve closing body 2 is preloaded against the valve seat 4. In the open position of the valve closing body 2, a connection is made between a valve inlet 5 and a valve outlet 6. The valve inlet 5 has a connection to a high-pressure connection 15, via which the shut-off valve 1 is connected or can be connected to a pressurized-gas vessel (not illustrated).

[0024] In addition, the shut-off valve 1 shown has an actuator arrangement 7, which interacts with an actuating element 8. In the closed position of the shut-off valve 1 and when the actuator arrangement 7 is deenergized, this actuating element is arranged at a distance from and coaxially with the valve closing body 2 (see FIG. 1). The actuator arrangement 7 is arranged behind the actuating element 8. If current is supplied to an actuator of the actuator arrangement 7, the actuator forces move the actuating element 8 in the direction of the valve closing body 2 (see FIG. 2). During this process, the actuating element 8 absorbs kinetic energy which, on impact with the valve closing body 2, is converted into an opening momentum which leads to the valve closing body 2 being lifted out of the valve seat 4 counter to the spring force of the closing spring 3 and counter to high pressure. During this process, a first opening cross section is exposed, which leads to the pressure downstream of the valve seat 4 adjusting to the pressure upstream. As a result of the remaining kinetic energy introduced into the valve closing body 2 by way of the momentum, the latter moves further in the direction of the stop 13. When the stop 13 is reached, current is supplied to an electromagnet 14, which forms the stop 13 and whose magnetic force holds the valve closing body 2 in this end position (see FIG. 3). The valve closing body 2 now exposes the maximum opening cross section of the shut-off valve 1. At this point in time, the actuating element 8 has already reassumed its initial position since the energization of the actuator has been ended, with the result that a return spring 9 was able to reset the actuating element 8.

[0025] To close the shut-off valve 1, the energization of the electromagnet 14 is ended and, as a result, the closing spring 3 returns the valve closing body 2 to the valve seat 4. The shut-off valve 1 is then once again in the state illustrated in FIG. 1.

[0026] In the exemplary embodiment illustrated in FIGS. 1 to 3, the actuator of the actuator arrangement 7 and the return spring 9 are arranged in an actuator chamber 10 which is sealed with respect to a region 11 which carries pressurized gas. This means that the actuator does not come into contact with the pressurized gas. The sealing is effected by means of a guide 16 of the actuating element 8. A venting channel 12 is provided for venting the actuator chamber 10.