WO2020235504A1 - Valve device and gas consumption unit - Google Patents

Abstract

[Problem] The purpose of the present invention is to provide a valve device and a gas consumption unit which can be attached to a storage container to restrict the passage of fluid, the valve device and the gas consumption unit being small-sized but provided with a safety valve that releases an excessive pressure greater than a predetermined pressure. [Solution] A relief body (41) is configured in a ring shape to fit around a tubular main body (13) so as to move forward and backward along an axial direction (L) inside a cover portion (30). The relief body (41) is provided with a relief spring (42), two O-rings (4), and a third flow channel (R3). The relief spring (42) urges the relief body (41) toward a proximal end side (Lb) with an urging force of a predetermined pressure or less. The two O-rings (4) are separated in the axial direction (L) and seal gaps between the tubular main body (13) and the relief body (41). The third flow channel (R3) communicates with a part located between the tubular main body (13) and the relief body (41) and between the two O-rings (4), and with a first flow channel (R1). The effective area of the O-ring (4b) on the proximal end side (Lb) is wider than the effective area of the O-ring (4a) on a distal end side (Lf).

Description

Valve device and gas consumption unit

The present invention relates to, for example, a valve device and a gas consumption unit which can be attached to a storage container to regulate the conduction of a fluid and have a safety valve for releasing an excess pressure larger than a predetermined pressure.

In general, in a valve device provided with an on-off valve that conducts a fluid such as gas and switches between an open state and a sealed state, a safety valve that releases the pressure when an unintended excessive pressure acts may be provided. (See Patent Document 1).

As shown in Patent Document 1, such a valve device has a safety valve arranged so as to branch from a flow path through which the fluid conducts and project in the direction opposite to the conduction port through which the fluid conducts. It was difficult to construct a compact valve device.

Japanese Unexamined Patent Publication No. 7-225000

Therefore, an object of the present invention is to provide a valve device and a gas consumption unit which can be attached to a storage container to regulate the conduction of a fluid and can be miniaturized even if a safety valve for releasing an excess pressure larger than a predetermined pressure is provided. ..

The present invention is a valve device including a flow path through which a fluid passes, an on-off valve for switching opening and closing in an intermediate portion of the flow path, and a safety valve for opening the fluid having an excess pressure larger than a predetermined pressure. A tubular device main body having one conduction port of the flow path is surrounded, and a surrounding portion having a discharge port for communicating the outside and the inside is provided, and the safety valve is provided inside the surrounding portion. A ring-shaped urging means that is externally fitted to the apparatus main body so as to advance and retreat along the axial direction of the safety valve and urges the safety valve toward the valve closing direction with an urging force of a predetermined pressure or less, and the shaft. Two sealing portions that seal between the device main body and the safety valve, and between the two sealing portions between the device main body and the safety valve, and the flow, at predetermined intervals in the direction. A branch flow path communicating with the road is provided, and the effective area of the sealing portion on the valve closing side of the two sealing portions is wider than the effective area of the sealing portion on the valve opening side. And.

The fluid can be a gas, a liquid, or a gel.
According to the present invention, it is possible to regulate the conduction of a fluid by attaching it to a storage container, and it is possible to make it compact even if it is provided with a safety valve that releases an excess pressure larger than a predetermined pressure.

More specifically, the safety valve is configured in a ring shape that fits into the device body so as to advance and retreat along the axial direction of the device body, and surrounds a tubular device body having one conduction port of the flow path. At the same time, the urging means urges the safety valve provided inside the surrounding portion having the discharge port for communicating the outside and the inside toward the valve closing direction with an urging force of a predetermined pressure or less, and is predetermined in the axial direction. The two sealing portions that seal between the device main body and the safety valve, the two sealing portions between the device main body and the safety valve, and the flow path are spaced apart from each other. Since a branch flow path for communication is provided and the effective area of the sealing portion on the valve closing side of the two sealing portions is larger than the effective area of the sealing portion on the valve opening side, the branch flow path is provided. When the differential pressure corresponding to the difference in the effective area is a large pressure that exceeds the urging force of the urging means, the safety valve moves in the valve opening direction to open against the urging force of the urging means. It is possible to valve and release excess pressure above a predetermined pressure.

In this way, the safety valve capable of releasing an excessive pressure equal to or higher than a predetermined pressure is configured in a ring shape that fits into the main body of the device so as to advance and retreat along the axial direction, so that the valve device is compactly configured. be able to.

As an aspect of the present invention, an attachment portion attached to a storage container for storing the fluid, a first flow path extending in the axial direction from the attachment portion, and a second flow path extending in the axial direction from the conduction port. A valve chamber in which the on-off valve is arranged so as to be able to move forward and backward in the opening / closing direction is provided, the flow path is composed of the first flow path and the second flow path, and the valve chamber intersects in the axial direction. The first flow path and the second flow path may be communicated with each other in the crossing direction, and the on-off valve may advance and retreat in the crossing direction in the valve chamber to open and close.

According to the present invention, the on-off valve can be moved forward and backward in the intersecting direction intersecting the axial direction to switch between opening and closing, so that the valve device is more compact than the valve device in which the on-off valve is moved forward and backward along the axial direction to switch between opening and closing. can do.

Further, as an aspect of the present invention, the branch flow path may communicate with the first flow path.
According to the present invention, the excess pressure on the storage container side can be released accurately and sensitively even when the valve is closed.

Further, as an aspect of the present invention, a filter may be provided on the mounting portion.
According to the present invention, it is possible to prevent foreign matter from entering the inside of the valve device from the storage container side. Therefore, it is possible to prevent foreign matter from entering the inside of the valve device, which reduces the closing property and causes malfunction.

Further, as an aspect of the present invention, the filter may be formed with a diameter slightly smaller than the inner diameter of the mounting portion, and a ring-shaped closing ring may be provided on the opening side of the filter to close the gap on the outer diameter side.
According to the present invention, it is possible to prevent foreign matter from entering the valve device from the storage container side, and the filter can be easily removed for cleaning or replacement.

More specifically, since the filter is formed to have a diameter slightly smaller than the inner diameter of the mounting portion, it can be easily removed from the mounting portion and cleaned or replaced. However, foreign matter may enter through the gap between the filter and the mounting portion, but since a blocking ring is provided on the opening side of the filter to close the gap on the outer diameter side, the filter and the mounting portion It is possible to prevent foreign matter from entering through the gap between the two.

Further, as an aspect of the present invention, a plurality of the filters having different filtration accuracy may be provided at predetermined intervals in the axial direction, and a ring-shaped elastic ring may be provided between the plurality of filters.
The difference in filtration accuracy means that the particle size of foreign matter transmitted through the filter is different.

According to the present invention, as compared with the case of using a single filter having high filtration accuracy, the load on each filter is reduced to prevent clogging, and foreign matter is surely prevented from entering the inside of the valve device from the storage container side. can do.
More specifically, even if foreign matter permeates the first filter among the plurality of filters having different filtration accuracy provided at predetermined intervals in the axial direction, the next filter allows the foreign matter to enter the inside of the valve device. It can be prevented more.

Since a ring-shaped elastic ring is provided between the plurality of filters arranged at predetermined intervals in the axial direction, a space is secured between the filters. Therefore, the foreign matter that has passed through the filter may stay in the space between the filters without being filtered by the next filter. Therefore, it is possible to reliably prevent foreign matter from entering the inside of the valve device.

Further, as an aspect of the present invention, a decompression mechanism may be provided at the conduction port.
According to the present invention, a valve device having a depressurizing function can be configured and the fluid can be decompressed and used.

The decompression mechanism is a unitized decompression mechanism, and may be detachably attached to the valve device. When the unitized decompression mechanism is detachably attached to the conduction port in this way, the fluid can be decompressed and used when the fluid is used. Further, when the storage container is filled with the fluid, by removing the pressure reducing mechanism and filling the storage container directly from the conduction port, it is possible to prevent the pressure reducing mechanism from functioning as a conduction direction regulating valve and becoming difficult to fill.

In the present invention, a flow path through which a fluid passes, an on-off valve for switching opening and closing in an intermediate portion of the flow path, an attachment portion for attaching a valve device main body at a predetermined position, and the on-off valve are arranged so as to be able to advance and retreat in the opening and closing direction. A valve device provided with a valve chamber, wherein a filter is provided in the mounting portion, and the filter is formed to have a diameter slightly smaller than the inner diameter of the mounting portion, and is on the outer diameter side on the opening side of the filter. It is characterized in that a ring-shaped closing ring for closing the gap is provided.

The valve device may be a so-called container valve device used by being attached to a gas storage container, or a so-called pipe valve device used by being connected to a pipe.
In the case of a piping valve device in which the mounting portion is provided on both the upstream side and the downstream side in the conduction direction, it may be provided at least on the upstream side mounting portion.

According to the present invention, it is possible to prevent foreign matter from entering the inside of the valve device.
More specifically, in general, a container valve device (Japanese Patent Laid-Open No. 2010-223396) attached to a gas storage container as a valve device provided with an on-off valve that conducts a fluid such as gas and switches between an open state and a sealed state. (Japanese Patent Laid-Open No. 2011) and a piping valve device (Japanese Patent Laid-Open No. 2011-177843) connected to a pipe.

In such a valve device, the on-off valve is opened and closed to switch the conduction of the fluid. However, when a foreign substance is conducted together with the fluid, the foreign substance is mixed in the consumed fluid or the foreign substance is caught inside the valve device to close the valve device. Was likely to decrease.

On the other hand, a filter is provided in the mounting portion, the filter is formed with a diameter slightly smaller than the inner diameter of the mounting portion, and a ring-shaped closing ring that closes a gap on the outer diameter side on the opening side of the filter is provided. The provided valve device can prevent foreign matter from entering the inside of the valve device.

Furthermore, even if the filter is clogged, it can be easily removed, cleaned or replaced, and foreign matter can be prevented from entering the inside of the valve device. Therefore, it is possible to prevent foreign matter from being mixed into the consumed fluid or foreign matter from being caught inside the valve device and reducing the closing property.

More specifically, by providing the filter in the mounting portion, it is possible to prevent foreign matter from entering the inside of the device.
Further, the filter is formed to have a diameter slightly smaller than the inner diameter of the mounting portion, and is provided with a ring-shaped closing ring that closes a gap on the outer diameter side on the opening side of the filter. Therefore, the filter can be firmly mounted on the mounting portion while preventing foreign matter from entering between the filter formed with a diameter slightly smaller than the inner diameter of the mounting portion and the inner diameter of the mounting portion.

Furthermore, since the filter is formed to have a diameter slightly smaller than the inner diameter of the mounting portion, the filter can be easily removed from the mounting portion by removing the closing ring that fixes the filter to the mounting portion. The clogged filter can be cleaned or replaced, and foreign matter can be prevented from entering the inside of the valve device.

As an aspect of the present invention, a plurality of the filters having different filtration accuracy may be provided at predetermined intervals in the axial direction, and a ring-shaped elastic ring may be provided between the plurality of filters.

According to the present invention, as compared with the case of using a single filter having high filtration accuracy, the load on each filter is reduced, clogging is less likely to occur, and foreign matter is surely prevented from entering the inside of the valve device from the supply side. be able to.

More specifically, even if foreign matter permeates the first filter among the plurality of filters having different filtration accuracy provided at predetermined intervals in the axial direction, the next filter allows the foreign matter to enter the inside of the valve device. It can be prevented more.

Further, since the ring-shaped elastic ring provided between the plurality of filters arranged at predetermined intervals in the axial direction forms a space between the filters, the foreign matter that has passed through the filters is as follows. It may stay in the space between the filters without being filtered by the filters. Therefore, it is possible to reliably prevent foreign matter from entering the inside of the valve device.

Further, in the present invention, a flow path through which a fluid passes, an on-off valve for switching opening and closing in an intermediate portion of the flow path, a mounting portion for attaching a valve device main body at a predetermined position, and the on-off valve are arranged so as to be able to move forward and backward in the opening and closing direction. It is a valve device provided with a valve chamber to be formed, characterized in that a filter is provided in the mounting portion, and a plurality of the filters having different filtration accuracy are provided at predetermined intervals in the axial direction. To do.

According to the present invention, it is possible to reliably prevent foreign matter from entering the inside of the valve device. Further, as compared with the case where a filter having high filtration accuracy is used alone, the load on each filter can be reduced and clogging can be made less likely.

More specifically, even if foreign matter permeates the first filter among the plurality of filters having different filtration accuracy provided at predetermined intervals in the axial direction, the next filter allows the foreign matter to enter the inside of the valve device. It can be prevented more. Therefore, compared to the case where a filter with high filtration accuracy is used alone, the load on each filter can be reduced to prevent clogging, and foreign matter can be reliably prevented from entering the inside of the valve device from the supply side. it can.

As an aspect of the present invention, a ring-shaped elastic ring may be provided between the plurality of filters.
According to the present invention, a ring-shaped elastic ring provided between a plurality of the filters arranged at predetermined intervals in the axial direction forms a space between the filters, so that foreign matter that has passed through the filters can be removed. It may stay in the space between the filters without being filtered by the next filter. Therefore, it is possible to reliably prevent foreign matter from entering the inside of the valve device.

Further, as an aspect of the present invention, the filter may be formed with a diameter slightly smaller than the inner diameter of the mounting portion, and a ring-shaped closing ring may be provided on the opening side of the filter to close the gap on the outer diameter side.
According to the present invention, it is possible to prevent foreign matter from entering the inside of the valve device, and the filter can be easily removed for cleaning or replacement.

More specifically, since the filter is formed to have a diameter slightly smaller than the inner diameter of the mounting portion, it can be easily removed from the mounting portion and cleaned or replaced. However, foreign matter may enter through the gap between the filter and the mounting portion, but since a blocking ring is provided on the opening side of the filter to close the gap on the outer diameter side, the filter and the mounting portion It is possible to prevent foreign matter from entering through the gap between the two.

Further, as an aspect of the present invention, a decompression mechanism may be provided at the conduction port.
According to the present invention, a valve device having a depressurizing function can be configured and the fluid can be decompressed and used.

Further, as an aspect of the present invention, the mounting portion is configured to be mounted on a storage container for storing the fluid, and a first flow path extending in the axial direction from the mounting portion and a first flow path extending in the axial direction from the conduction port. Two flow paths and a valve chamber in which the on-off valve is arranged so as to be able to move forward and backward in the opening / closing direction are provided, the flow path is composed of the first flow path and the second flow path, and the valve chamber is the valve chamber. The first flow path and the second flow path may be communicated with each other in the crossing direction intersecting in the axial direction, and the on-off valve may advance and retreat in the crossing direction in the valve chamber to open and close.

According to the present invention, since the on-off valve can be moved forward and backward in the intersecting direction intersecting the axial direction to switch between opening and closing, it can be configured more compactly than a valve device for moving the on-off valve forward and backward along the axial direction to switch between opening and closing. ..

Further, in the present invention, the above-mentioned valve device, a storage container to which the attachment portion in the valve device is attached and gas is stored as the fluid, and a gas combustion portion connected to the conduction port and burning the gas are provided. It is characterized by being a provided gas consumption unit.
According to the present invention, the gas can be burned in the gas combustion section while adjusting the derivation amount of the gas stored in the storage container or by a preset derivation amount, and can be opened when an excessive pressure is applied. it can.

Further, as an aspect of the present invention, the gas is hydrogen gas, and the storage container may store the hydrogen gas in a hydrogen storage alloy.
According to the present invention, hydrogen gas can be safely burned.

More specifically, compared to the case where gaseous or liquid hydrogen is stored as it is in a storage container, the pressure when storing it in a hydrogen storage alloy is lower, so that hydrogen gas can be safely burned. ..

When hydrogen gas stored in a hydrogen storage alloy is used, the hydrogen storage alloy is pulverized by repeating the absorption and release of the hydrogen gas. Therefore, by providing the above-mentioned filter in the mounting portion, the powder can be obtained. It is possible to prevent the converted hydrogen storage alloy from entering the valve device.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a valve device and a gas consumption unit that can be attached to a storage container to regulate the conduction of a fluid and can be miniaturized even if a safety valve for releasing an excess pressure larger than a predetermined pressure is provided.

Sectional view of the valve device. A cross-sectional view of the valve device in a state where the main body mechanism and the decompression mechanism are disassembled. Explanatory view by schematic exploded perspective view of the main body mechanism. Perspective view of the mounting part. An exploded perspective view of the mounting part. Schematic cross-sectional view of a hydrogen combustion unit to which a valve device is attached. The schematic sectional view which shows the operating state of the valve device in a hydrogen combustion unit. The schematic sectional view which shows the operating state of the valve device in a hydrogen combustion unit. The schematic sectional view which shows the operating state of the valve device in a hydrogen combustion unit. Sectional drawing of the main body mechanism of another embodiment. Explanatory drawing of the container valve device of another embodiment.

A valve device 1 according to an embodiment of the present invention and a hydrogen combustion unit X which is an embodiment of a gas consumption unit will be described with reference to FIGS. 1 to 9.
FIG. 1 shows a cross-sectional view of the valve device 1, FIG. 2 shows a cross-sectional view of the valve device 1 in a state where the main body mechanism 2 and the decompression mechanism 3 are disassembled, and FIG. 3 is a schematic perspective view of the main body mechanism 2. An explanatory diagram is shown. FIG. 4 shows a perspective view of the mounting portion 11, FIG. 5 shows an exploded perspective view of the mounting portion 11, and FIG. 6 shows a schematic cross-sectional view of the hydrogen combustion unit X to which the valve device 1 is mounted. Reference numeral 9 denotes a schematic cross-sectional view showing an operating state of the valve device 1 in the hydrogen combustion unit X. It should be noted that FIGS. 7 to 9 show an enlarged part of the hydrogen combustion unit X.

More specifically, FIG. 3A shows an exploded perspective view of the relief body 41 separated from the body 10, and FIG. 3B shows a perspective view of the relief body 41 assembled. In FIG. 3, in order to clarify the configuration of the main body mechanism 2, particularly the configuration of the relief body 41, a part of the front side in the circumferential direction is shown in a transparent state. Further, the internal structure of the body 10 and the cover portion 30 are not shown.

In FIG. 4 showing a perspective view of the mounting portion 11 and FIG. 5 showing an exploded perspective view of the mounting portion 11, in order to clarify the configuration of the mounting portion 11 and the configuration of each element mounted on the mounting portion 11, the usage state The mounting portion 11 arranged downward is shown so as to face upward. Further, in FIGS. 4 and 5, a part of the front side of the mounting portion 11 in the circumferential direction is shown in a transparent state.

As described above, FIG. 6 illustrates a cross-sectional view of the hydrogen combustion unit X, but only above the storage container Y.
FIG. 7 shows a schematic cross-sectional view of the valve device 1 assembled to the hydrogen combustion unit X with the on-off valve 22 opened, and FIG. 8 shows a schematic cross-sectional view of the valve device 1 with the pressure reducing mechanism 3 operating. FIG. 9 shows a schematic cross-sectional view of the main body mechanism 2 in a state where the relief body 41 is opened.
The left-right direction in FIG. 1 is the axial direction L, the right side in FIG. 1 is the base end side Lb, and the left side is the tip end side Lf.

The valve device 1 is a valve device that can be attached to the storage container Y (FIG. 6) to regulate the conduction of hydrogen gas stored in the storage container Y and is provided with a safety valve unit 40 that releases an excess pressure larger than a predetermined pressure. is there.

As shown in FIG. 1, the valve device 1 is configured by connecting the main body mechanism 2 and the decompression mechanism 3 in the axial direction L so as to be detachable.
The main body mechanism 2 is composed of a body 10, an opening / closing operation unit 20, a cover unit 30, a safety valve unit 40, and a filter unit 50 along the axial direction L.

The body 10 has a cylindrical mounting portion 11 from the base end side Lb to the tip end side Lf, a cylindrical central diameter large portion 12 to which the opening / closing operation portion 20 is mounted, and a mounting portion having a diameter larger than that of the mounting portion 11. It has the same diameter as 11 and is composed of a tubular main body 13 to which the decompression mechanism 3 is connected.

The mounting portion 11 has a screw thread 111 screwed into the mounting port Ya on the upper portion of the storage container Y (FIG. 6) on the outer periphery, and the base end side Lb on which the filter portion 50 can be mounted is opened. It is cylindrical with a filter space 112.

More specifically, on the inner surface of the mounting portion 11 constituting the filter space 112, as shown in FIG. 5, a fitting groove 113 for fitting the fixing ring 52 in the filter portion 50 to the proximal end side Lb, and the filter portion A mounting portion 114 having a diameter smaller than that of the fitting groove 113 on which the fixing ring 52 and the elastic ring 53 of 50 are mounted is formed.

The large central diameter portion 12 has a disk shape having a diameter about twice that of the mounting portion 11, and provides a columnar opening / closing space 121 extending in the radial direction from a part of the outside in the circumferential direction to a depth exceeding the center. Have.
The opening / closing space 121 is a substantially cylindrical space in which the opening / closing operation unit 20 is mounted to switch between opening and closing, and the first space 122 and the central valve chamber portion constituting the valve chamber are formed from the outer diameter (lower side in FIG. 1). It is composed of 123 and a third space 124.

The operating body 21 of the opening / closing operation unit 20 is arranged in the first space 122, and the opening / closing valve 22 of the opening / closing operation unit 20 is arranged in the central valve chamber unit 123. In the third space 124, an on-off spring 23 that urges the on-off valve 22 in the valve-opening direction (downward in FIG. 1) is arranged.

The first space 122 is provided with a screw groove 125 that is exposed to the outside of the opening / closing space 121 and is screwed with a screw thread 211 provided on the outer peripheral surface of the operating body 21, and is screwed in the radial direction by the rotational operation of the operating body 21. It is configured to allow entry and exit.

The central valve chamber portion 123 is provided near the center of the opening / closing space 121 extending in the radial direction, is a cylindrical space having a diameter smaller than that of the first space 122, and is provided with a tapered portion 126 on the side of the third space 124. ing.
The third space 124 is a bottomed cylindrical space having a diameter smaller than that of the central valve chamber portion 123 in which the opening / closing spring 23 that is externally fitted to the extending portion 222 of the on-off valve 22 is arranged.

The tubular main body 13 has a cylindrical shape extending from the central diameter large portion 12 to the tip side Lf, the tip side Lf side is opened inside, and the mounting convex portion 61 of the decompression body 60 of the decompression mechanism 3 described later is inserted. An insertion space 131 is provided. The insertion space 131 is a bottomed space having a depth of about 2/3 of the length in the axial direction L in the tubular main body 13.

Mounting grooves 132 and 133 for mounting the O-ring 4 having an elliptical cross section are provided near the center of the tubular main body 13 in the axial direction and on the outer circumference of the base end side Lb.
More specifically, the mounting grooves 132 and 133 are substantially U-shaped grooves whose three surfaces are surrounded by the side surface of the tip end side Lf and the base end side Lb and the bottom surface inside the diameter, and the outside diameter is open.

The mounting groove 132 provided near the center of L of the tubular main body portion 13 has a smaller diameter than the mounting groove 133 provided on the base end side Lb. Specifically, the bottom surface of the mounting groove 132 provided near the center of L of the tubular main body portion 13 has a smaller diameter than the bottom surface of the mounting groove 133 provided on the base end side Lb. Therefore, the O-ring 4a mounted on the mounting groove 132 has a smaller diameter than the O-ring 4b mounted on the mounting groove 133.

Further, a first flow path R1 and a second flow path R2 are provided inside the opening / closing space 121.
Further, the first flow path R1 passes through the side of the central valve chamber portion 123 in the third space 124 inside the opening / closing space 121, and extends in the axial direction L from the filter space 112 of the mounting portion 11 toward the tip side Lf. ing. The second flow path R2 communicates the central valve chamber portion 123 constituting the valve chamber and the insertion space 131 in the axial direction L.

Further, the first flow path R1 extends beyond the first space 122 to the tip end side Lf of the tubular main body portion 13, and has a diameter from the tip end side of the first flow path R1 toward the outer surface of the tubular main body portion 13. A third flow path R3 extending in the direction and communicating with the outside of the tubular main body 13 is provided.

The outer end of the third flow path R3 is located between the mounting grooves 132 and 133 arranged at predetermined intervals in the axial direction L.
Further, the insertion space 131 through which the end of the tip end side Lf of the second flow path R2 communicates serves as a conduction port in the main body mechanism 2.

The range from the filter space 112 to the central valve chamber portion 123 of the first flow path R1 and the second flow path R2 arranged in this way communicate with each other from the filter space 112 to the insertion space 131 in the main body mechanism 2. It constitutes R.

The opening / closing operation unit 20 is mounted in the opening / closing space 121 of the central diameter large portion 12 of the body 10, and has a configuration in which the opening / closing operation is switched in the radial direction, and is mounted in the first space 122 constituting the opening / closing space 121. It is composed of an on-off valve 22 mounted on the body 21, a central valve chamber portion 123, and an on-off spring 23 arranged in the third space 124 and urging the on-off valve 22 to the outside diameter (lower in FIG. 1).

The operating body 21 has a cylindrical shape mounted on the first space 122, and a screw thread 211 screwed into a screw groove 125 formed on the inner surface of the first space 122 is formed on the outer peripheral surface, and an operating tool (rotating operation tool) is operated. An insertion recess 212 into which an insertion recess 212 (not shown) can be inserted is provided on the outer diameter.

The on-off valve 22 has a cylindrical shape to be attached to the central valve chamber portion 123 constituting the opening / closing space 121, and has a pre-throttled pre-throttle portion 221 on the tip side (upper in FIG. 1) from the pre-throttle portion 221. An extension portion 222 that extends is provided.

Further, the on-off valve 22 is provided with an O-ring 4 (see FIG. 1) on the side of the operating body 21, more specifically, on the side of the operating body 21 from the third flow path R3 and in the vicinity of the pre-throttle portion 221. It is provided.
The opening / closing spring 23 is a coil spring that is arranged in the third space 124 and is externally fitted to the extending portion 222, and is in the direction of separating the opening / closing valve 22, that is, the side of the operating body 21 that is outside the diameter (lower in FIG. 1). ) Is configured to be urged.

When the operation tool (not shown) is inserted into the insertion recess 212 and the operation body 21 is screwed into the opening / closing operation unit 20 configured in this way, the opening / closing valve 22 resists the urging force of the opening / closing spring 23. Move to the side of 23. When the on-off valve 22 moved to the opening / closing spring 23 side is in the valve closing position (upper position in FIG. 1) in this way, the front throttle portion 221 is located on the tapered portion 126 in the opening / closing space 121, and the O-ring 4 Sealed by.

On the contrary, when the operating body 21 is screwed out by the opening operation (rotation in the opposite direction), the on-off valve 22 moves to the side of the operating body 21 which is on the outer diameter due to the urging force of the opening / closing spring 23, and the front throttle portion 221 moves. It is separated from the tapered portion 126, and the fluid can conduct between them (valve opening position).

The cover portion 30 covers the tubular main body portion 13 and the central diameter large portion 12 of the body 10, the front end side cover portion 31 covering the tubular main body portion 13 and the proximal end side covering the central diameter large portion 12. It is formed by the cover portion 32.

The tip side cover portion 31 has a cylindrical shape having an inner surface having a diameter larger than the outer circumference of the tubular main body portion 13, and a gable wall 311 is provided on the tip side Lf. In this way, a space for arranging the safety valve portion 40, which will be described later, can be formed between the front end side cover portion 31, the gable wall 311 and the tubular main body portion 13. The outer peripheral surface of the front end side cover portion 31 is provided with a screw thread 312 screwed into a screw groove 91 provided on the inner surface of the connection nut 90.

The base end side cover portion 32 has a cylindrical shape having a larger diameter than the tip end side cover portion 31 in which the tip end side Lf of the central diameter large portion 12 and the base end side Lb covering the outer diameter are open. Further, the base end side cover portion 32 is circumferentially oriented through a discharge port 321 that communicates the outside with the space for arranging the safety valve portion 40, which will be described later, between the tip end side cover portion 31, the gable wall 311 and the tubular main body portion 13. There are multiple in.

The safety valve portion 40 arranged in the space formed between the front end side cover portion 31, the gable wall 311 and the tubular main body portion 13 is composed of a relief body 41 and a relief spring 42. The relief body 41 has a ring shape that is externally fitted to the tubular main body portion 13, and the relief spring 42 has a configuration in which the relief body 41 is urged to the base end side Lb by using the gable wall 311 of the front end side cover portion 31 as a reaction force. Is.

The relief body 41 is arranged on the Lf side on the tip side, and has a tip side ring portion 411 that is externally fitted to the tubular main body portion 13, a base end side ring portion 412 having a diameter slightly larger than the tip end side ring portion 411, and a base end. It has a ring shape composed of a flange 413 that extends outward in diameter at the base end side Lb of the side ring portion 412.
An inclined surface 414 that inclines outward in diameter toward the proximal end side Lb is provided between the distal end side ring portion 411 and the proximal end side ring portion 412 having a diameter slightly larger than that of the distal end side ring portion 411. ing.

The relief body 41 configured in this way is in contact with the inner surface of the tip-side ring portion 411 with the O-ring 4a mounted in the mounting groove 132 of the tubular main body portion 13 in a state of being externally fitted to the tubular main body portion 13. The O-ring 4b mounted in the mounting groove 133 abuts on the inner surface of the base end side Lb of the base end side ring portion 412 having a diameter larger than that of the tip end side ring portion 411. As a result, the space between the relief body 41 and the tubular main body 13 is sealed.

The space between the relief body 41 and the tubular main body 13 sealed by the contact of the O- rings 4a and 4b is such that the base end side ring portion 412 has a slightly larger diameter than the tip end side ring portion 411. Therefore, the space in the base end side ring portion 412 is also widened.

The filter portion 50, which is mounted in the filter space 112 provided in the mounting portion 11 of the body 10 and prevents foreign matter from entering from the storage container Y, includes two filters 51 (51a, 51b), a fixing ring 52, and elasticity. It is composed of a ring 53.

The two filters 51 (51a, 51b) have different filtration accuracy. The fixing ring 52 prevents the filter 51 from coming off, and the elastic ring 53 is arranged between the two filters 51.

The filter 51 has a disk shape that is slightly smaller than the inner diameter of the mounting portion 114 in the filter space 112 and has a predetermined thickness, and is arranged on the proximal end side Lb from the second filter 51a arranged on the distal end side Lf. The 1 filter 51b is a filter having a low density and a large transmission hole diameter.

The two filters 51 configured in this way are arranged at the mounting portion 114 at a predetermined interval in the axial direction L. At the base end side Lb of the first filter 51b, the fixing ring 52 fitted into the fitting groove 113 of the mounting portion 11 has a quadrangular cross section, and is a C-shaped ring body in a plan view in which a part in the circumferential direction is open. Yes, it has appropriate elasticity.

The elastic ring 53 arranged between the two filters 51 arranged at predetermined intervals in the axial direction L in the mounting portion 114 is an elastic ring body having a circular cross section, and is an inner surface of the mounting portion 114. It is formed with an outer diameter along the above.

The filter portion 50 in which each element is configured in this way is arranged so as to sandwich the elastic ring 53 between the two filters 51 in the mounting portion 114 of the filter space 112. Then, at the base end side Lb, the fixing ring 52 can be fitted into the fitting groove 113, and the filter portion 50 can be assembled in the filter space 112.

The decompression mechanism 3 that is assembled with the main body mechanism 2 to form the valve device 1 is composed of a decompression body 60, a cap portion 70, a decompression portion 80, and a connecting nut 90 along the axial direction L. In the decompression mechanism 3, as shown in the drawing, an O-ring 4 is appropriately arranged at each sliding portion, but the description thereof will be omitted here.

The pressure reducing body 60 is composed of a mounting convex portion 61, a piston receiving portion 62 having a diameter larger than that of the mounting convex portion 61, and a sealing ring 64.
The mounting convex portion 61 is inserted into the insertion space 131 of the tubular main body 13 at the base end side Lb, and the piston receiving portion 62 is arranged at the tip end side Lf of the mounting convex portion 61. The sealing ring 64 is inserted into the base end side Lb of the gangway 63 that penetrates the mounting convex portion 61 and the piston receiving portion 62 in the axial direction L.

The mounting convex portion 61 has a cylindrical shape that is inserted into the insertion space 131 of the tubular main body portion 13, and the piston receiving portion 62 is arranged at the tip side Lf of the mounting convex portion 61 and has a larger diameter than the mounting convex portion 61. The tip side Lf is open. A through-passage 63 that penetrates the mounting convex portion 61 and the piston receiving portion 62 configured in this way in the axial direction L is provided, the base end side Lb of the through-passage 63 is enlarged in diameter, and the sealing ring 64 is attached. Has been done.

The sealing ring 64 mounted on the expanded portion of the base end side Lb in the through-passage 63 has a filter 65 mounted on the base end side Lb, and a through hole 641 penetrating in the axial direction L is provided inside. The periphery of the tip side Lf of the through hole 641 forms a sealing convex portion 642 protruding toward the tip side Lf.

The cap portion 70 is arranged at the tip end side Lf of the piston receiving portion 62, has a bottomed cylindrical shape, and is arranged so as to be externally fitted to the piston receiving portion 62 at the base end side Lb. A conduction port 71 penetrating in the axial direction L is provided on the tip end side Lf of the cap portion 70 configured in this way.

The decompression portion 80 arranged in the space surrounded by the decompression body 60 and the cap portion 70 has an inverted T-shape in vertical cross-sectional shape, and forms a gangway 83 penetrating in the axial direction L. ing.
The decompression portion 80 is a large-diameter disk having a vertical cross-sectional shape of an inverted T shape and extending in the radial direction at a rod-shaped sealing rod-shaped portion 81 extending to the base end side Lb and a tip-side Lf of the sealing rod-shaped portion 81. It is composed of a part 82.

The base end side Lb of the sealing rod-shaped portion 81 is provided with a sealing recess 811 which is recessed in the tip end side Lf and abuts on the sealing convex portion 642 to seal. Further, a pressure reducing spring 84 is provided to urge the pressure reducing portion 80 to the tip side Lf by using the pressure reducing body 60 as a reaction force.

Specifically, the base end side Lb of the pressure reducing spring 84 is in contact with the piston receiving portion 62 of the pressure reducing body 60, the pressure reducing spring 84 is in contact with the large diameter disk portion 82, and the piston receiving portion 62 of the pressure reducing body 60 is subjected to a reaction force. As a result, the pressure reducing spring 84 is configured to urge the large-diameter disk portion 82 toward the base end side Lb. The urging force of the pressure reducing spring 84 is composed of an urging force corresponding to the depressurizing force for reducing the pressure of the conducting fluid to a predetermined pressure.

The connection nut 90 is a cylindrical body in which the tip end side Lf is rotatably fitted to the cylindrical cap portion 70 and the base end side Lb is open, and is formed on the outer peripheral surface of the tip end side cover portion 31. A screw groove 91 to be screwed into the provided screw thread 312 is provided on the inner surface.

The decompression mechanism 3 in which each element is configured in this way connects the base end side Lb of the sealing rod-shaped portion 81 from the tip side Lf to the through-passage 63 of the decompression body 60 in which the sealing ring 64 is attached to the base end side Lb. insert. At this time, the pressure reducing spring 84 is arranged between the piston receiving portion 62 and the large diameter disk portion 82. Then, the decompression body 60 and the cap portion 70 can be assembled and integrated, and the connecting nut 90 can be attached and assembled from the tip side Lf of the cap portion 70.

The decompression mechanism 3 assembled in this way inserts the mounting convex portion 61 of the decompression body 60 into the insertion space 131 of the tubular main body 13 of the body 10 in the main body mechanism 2. Then, the valve device 1 can be configured by screwing the screw groove 91 of the connection nut 90 in the pressure reducing mechanism 3 and the screw thread 312 of the tip side cover portion 31.

As shown in FIG. 6, the valve device 1 configured in this way is equipped with the hydrogen combustion unit Z on the cap portion 70 having the conduction port 71 of the decompression mechanism 3, and is stored in the base end side Lb of the main body mechanism 2. A container Y is attached to form a hydrogen combustion unit X.

Specifically, the attachment portion Za provided on the base end side Lb of the hydrogen combustion portion Z is connected to the cap portion 70 having the conduction port 71 in the decompression mechanism 3 constituting the valve device 1 to form the valve device 1. The attachment portion 11 of the main body mechanism 2 is attached to the attachment port Ya, and the valve device 1 is attached to the storage container Y.

The storage container Y is a storage container provided with an attachment port Ya at the top, and stores hydrogen gas as a fluid to be stored. Specifically, a hydrogen storage alloy (not shown) in which hydrogen gas is stored in a storage alloy is arranged inside the storage container Y, and the storage container Y stores hydrogen gas to be used as fuel.

In the hydrogen combustion portion Z, a mounting portion Za connected to the cap portion 70 having the conduction port 71 is provided on the base end side Lb, and a burner portion Zb for discharging hydrogen gas and burning is provided on the tip end side Lf. Further, the hydrogen combustion unit Z is provided with an opening / closing adjustment unit Zc for opening / closing and adjusting the amount of gaseous hydrogen gas derived from the burner portion Zb between the mounting portion Za and the burner portion Zb.

As shown in FIG. 7, the hydrogen combustion unit X configured in this way opens the opening / closing operation unit 20 to move the on / off valve 22 to the valve opening position, and causes the taper portion 126 and the tip throttle portion 221. A gap is formed between the two, and the valve device 1 is opened. In the valve device 1 in the valve open state as described above, the gaseous hydrogen gas led out from the storage container Y is introduced into the first flow path R1 through the filter space 112 in which the filter unit 50 is arranged, and is introduced into the second flow path R1. It conducts through the flow path R2, that is, through the flow path R to the insertion space 131.

Hydrogen gas passes from the insertion space 131 through the filter 65 and the through hole 641 of the sealing ring 64 mounted on the tip end side Lf of the through path 63 of the decompression body 60 in the decompression mechanism 3, and the through path 83 of the decompression unit 80. Then, the pressure of hydrogen gas acts on the Lf on the tip end side of the decompression section 80, and as shown in FIG. 7, the decompression section 80 moves Lb on the proximal end side against the urging force of the decompression spring 84 and seals. The convex portion 642 and the sealing concave portion 811 come into contact with each other to enter a sealed state.

By being in the sealed state in this way, the pressure acting on the pressure reducing portion 80 from the tip side Lf disappears, and the pressure reducing portion 80 moves to the tip side Lf by the urging force of the pressure reducing spring 84 (see FIG. 8). The hydrogen gas whose pressure has been reduced by the pressure reducing mechanism 3 by repeating the advancement and retreat of the pressure reducing unit 80 in the axial direction L and opening the opening / closing adjustment unit Zc passes through the conduction port 71 and is desired by the burner unit Zb. It is possible to release hydrogen gas as a fuel by the amount and pressure of the release. In this way, by igniting the hydrogen gas released from the burner portion Zb at a desired release amount and pressure, combustion can be performed in a desired state.

As described above, in the state where the hydrogen gas conducts the valve device 1, the hydrogen gas also conducts to the first flow path R1 and the third flow path R3 on the tip side of the central valve chamber portion 123, and the relief The pressure of the conductive hydrogen gas also acts on the space between the body 41 and the tubular main body 13.

The hydrogen gas conducted in the space between the relief body 41 and the tubular main body 13 in this way acts on the inclined surface 414 as a pressure corresponding to the difference in the effective area between the O-ring 4a and the O-ring 4b. Then, when the differential pressure becomes an excessive pressure exceeding the urging force of the relief spring 42, the relief body 41 moves to the tip side Lf against the urging force of the relief spring 42 (see FIG. 9).

When the relief body 41 moves to the tip side Lf, the outer diameter of the third flow path R3 is opened, and the relief body 41 passes through the space formed between the tip side cover portion 31, the gable wall 311 and the tubular main body portion 13 and is released. Excess pressure can be released by discharging from outlet 321.

When the relief body 41 moves to the tip end side Lf to release the excess pressure, the relief body 41 moves to the base end side Lb due to the urging force of the relief spring 42, and the initial safety valve portion 40 is sealed. It becomes.

As described above, a flow provided with a flow path R through which the hydrogen gas passes, an on-off valve 22 for switching the opening and closing in the intermediate portion of the flow path R, and a relief body 41 for releasing the hydrogen gas having an excess pressure larger than a predetermined pressure. A cover portion 30 having a discharge port 321 that communicates between the outside and the inside is provided while surrounding the tubular main body portion 13 of the tubular body 10 having the insertion space 131 of the tip side Lf in the road R, and the relief body 41. Is configured inside the cover portion 30 in a ring shape that fits externally into the tubular main body portion 13 so as to advance and retreat along the axial direction L, and the relief body 41 is moved to the base end side Lb with an urging force of a predetermined pressure or less. Between the relief spring 42 that urges toward the body, the two O- rings 4a and 4b that seal between the body 10 and the relief body 41 at a predetermined distance in the axial direction L, and between the body 10 and the relief body 41. A third flow path R3 that communicates between the two O- rings 4a and 4b in the above and the flow path R formed by the first flow path R1 is provided, and the base end side Lb of the two O- rings 4a and 4b is provided. Since the effective area of the O-ring 4b is wider than the effective area of the O-ring 4a on the tip side Lf, the relief body 41 can be attached to the storage container Y to regulate the conduction of hydrogen gas and release an excess pressure larger than a predetermined pressure. It can be configured compactly even if it is equipped with.

More specifically, the relief body 41 is formed in a ring shape that fits into the body 10 so as to advance and retreat along the axial direction L, and has a tubular body 10 having an insertion space 131 of the tip side Lf in the flow path R. The relief spring 42 faces the base end side Lb with an urging force of a predetermined pressure or less on the relief body 41 provided inside the cover portion 30 having a discharge port 321 that surrounds the shape main body portion 13 and communicates the outside and the inside. Two O- rings 4a and 4b that urge the body 10 and seal the relief body 41 at a predetermined interval in the axial direction L, and two O-rings between the body 10 and the relief body 41. A third flow path R3 that communicates between the rings 4a and 4b and the flow path R formed by the first flow path R1 is provided, and of the two O- rings 4a and 4b, the O-ring 4b on the base end side Lb is provided. Since the effective area of the tip side Lf is wider than the effective area of the O-ring 4a of the tip side Lf, the pressure from the third flow path R3 is slightly larger than that of the tip side ring portion 411 and the tip end side ring portion 411. When it acts on the inclined surface 414 formed between the ring portion 412 and the differential pressure according to the difference in the effective area is a large pressure exceeding the urging force of the relief spring 42, it opposes the urging force of the relief spring 42. The relief body 41 moves in the valve opening direction to open the valve, and an excess pressure equal to or higher than a predetermined pressure can be released.

In this way, the relief body 41 capable of releasing an excessive pressure equal to or higher than a predetermined pressure is configured in a ring shape that fits into the body 10 so as to advance and retreat along the axial direction L, so that the valve device 1 can be made compact. Can be configured.

Further, the valve device 1 includes a mounting portion 11 attached to a storage container Y for storing hydrogen gas, a first flow path R1 extending axially from the mounting portion 11, and a second flow path R1 extending axially from the insertion space 131. A flow path R2 and a central valve chamber portion 123 in which the on-off valve 22 is arranged so as to be able to move forward and backward in the opening / closing direction (vertical direction in FIG. 1) are provided. Then, the flow path R is composed of the first flow path R1 and the second flow path R2, and the central valve chamber portion 123 connects the first flow path R1 and the second flow path R2 in the radial direction orthogonal to the axial direction L. In addition to communicating with each other, the on-off valve 22 can advance and retreat in the radial direction in the central valve chamber portion 123 to switch between opening and closing. Therefore, the valve device 1 can be configured more compactly than the valve device that moves the on-off valve forward and backward along the axial direction L to switch between opening and closing.

Further, since the third flow path R3 communicates with the first flow path R1, the excess pressure on the storage container Y side can be released accurately and sensitively even in the valve closed state.
Further, since the filter 51 is provided on the mounting portion 11, it is possible to prevent foreign matter from entering the inside of the valve device 1 from the storage container Y side. Therefore, it is possible to prevent foreign matter from entering the inside of the valve device 1 to reduce the closing property or cause a malfunction.

Further, the filter 51 is formed to have a diameter slightly smaller than the inner diameter of the mounting portion 11, and is provided with a ring-shaped fixing ring 52 that closes the gap on the outer diameter side at the base end side Lb of the filter 51. Therefore, it is possible to prevent foreign matter from entering the inside of the valve device 1 from the storage container Y side, and the filter 51 can be easily removed for cleaning or replacement.

More specifically, since the filter 51 is formed to have a diameter slightly smaller than the inner diameter of the mounting portion 11, it can be easily removed from the mounting portion 11 for cleaning or replacement. However, foreign matter may enter through the gap between the filter 51 and the mounting portion 11, but since the fixing ring 52 that closes the gap on the outer diameter side is provided at the base end side Lb of the filter 51, the filter 51 and the mounting portion 11 are mounted. It is possible to prevent foreign matter from entering through the gap with the portion 11.

Further, two filters 51a and 51b having different filtration accuracy are provided at predetermined intervals in the axial direction L, and a ring-shaped elastic ring 53 is provided between the two filters 51a and 51b. Therefore, as compared with the case where a filter having high filtration accuracy is used alone, the load on the filters 51a and 51b is reduced to prevent clogging, and foreign matter invades the inside of the valve device 1 from the storage container Y side. Can be reliably prevented.

More specifically, of the two filters 51a and 51b having different filtration accuracy provided at predetermined intervals in the axial direction L, even if a foreign matter permeates through the first filter 51b on the proximal end side Lb, the first filter on the distal end side Lf. The 2 filter 51a can further prevent foreign matter from entering the inside of the valve device 1.

Since the ring-shaped elastic ring 53 is provided between the two filters 51a and 51b arranged at predetermined intervals in the axial direction L, a space is secured between the filters 51a and 51b. Therefore, the foreign matter that has passed through the first filter 51b on the proximal end side Lb may stay in the space between the filters 51a and 51b without being filtered by the second filter 51a on the distal end side Lf. Therefore, it is possible to reliably prevent foreign matter from entering the inside of the valve device 1.

Further, as described above, the flow path R through which the hydrogen gas passes, the on-off valve 22 for switching the opening and closing in the intermediate portion of the flow path R, the mounting portion 11 for attaching the body 10 at a predetermined position, and the on-off valve 22 are in the opening / closing direction. The valve device 1 is provided with a central valve chamber portion 123 that is freely arranged in and out of the mounting portion 11, and filters 51a and 51b are provided in the mounting portion 11, and the filters 51a and 51b are smaller than the inner diameter of the mounting portion 11. Since the ring-shaped fixing ring 52 formed with a small diameter and closing the gap on the outer diameter side on the opening side of the filters 51a and 51b is provided, it is possible to prevent foreign matter from entering the inside of the valve device 1.

Furthermore, even if the filters 51a and 51b are clogged, they can be easily removed, cleaned or replaced, and foreign matter can be prevented from entering the inside of the valve device 1. Therefore, it is possible to prevent foreign matter from being mixed into the consumed hydrogen gas or foreign matter from being caught inside the valve device 1 to reduce the closing property.

More specifically, by providing the filters 51a and 51b on the mounting portion 11, it is possible to prevent foreign matter from entering the inside of the valve device 1.
Further, the filters 51a and 51b are formed to have a diameter slightly smaller than the inner diameter of the mounting portion 11, and a ring-shaped fixing ring 52 is provided on the opening side of the filters 51a and 51b to close the gap on the outer diameter side. Therefore, the filters 51a and 51b are firmly attached to the mounting portion 11 while preventing foreign matter from entering between the filters 51a and 51b formed with a diameter slightly smaller than the inner diameter of the mounting portion 11 and the inner diameter of the mounting portion 11. be able to.

Furthermore, the filters 51a and 51b are formed to have a diameter slightly smaller than the inner diameter of the mounting portion 11. Therefore, by removing the fixing ring 52 that fixes the filters 51a and 51b to the mounting portion 11, the filters 51a and 51b can be easily removed from the mounting portion 11 to clean or replace the clogged filters 51a and 51b. be able to. Therefore, it is possible to prevent foreign matter from entering the inside of the valve device 1.

Further, since a plurality of filters 51a and 51b having different filtration accuracy are provided at predetermined intervals in the axial direction L, it is possible to reliably prevent foreign matter from entering the inside of the valve device 1. Further, as compared with the case where a filter having high filtration accuracy is used alone, the load on each of the filters 51a and 51b can be reduced and clogging can be made less likely.

More specifically, among a plurality of filters 51a and 51b having different filtration accuracy provided at predetermined intervals in the axial direction L, even if a foreign matter permeates through the first filter 51b of the proximal end side Lb, the first of the distal end side Lf. The 2 filter 51a can further prevent foreign matter from entering the inside of the valve device 1. Therefore, as compared with the case where a filter having high filtration accuracy is used alone, the load on each of the filters 51a and 51b is reduced to prevent clogging, and foreign matter invades the inside of the valve device 1 from the storage container Y side. Can be reliably prevented.

Further, since the ring-shaped elastic ring 53 is provided between the plurality of filters 51a and 51b, it is provided between the plurality of filters 51a and 51b arranged at predetermined intervals in the axial direction L. The ring-shaped elastic ring 53 forms a space between the filters 51a and 51b. Therefore, the foreign matter that has passed through the filters 51a and 51b may stay in the space between the filters 51a and 51b without being filtered by the second filter 51a on the tip side Lf. Therefore, it is possible to reliably prevent foreign matter from entering the inside of the valve device 1.

Further, the mounting portion 11 is configured to be mounted on the storage container Y for storing hydrogen gas, and has a first flow path R1 extending in the axial direction L from the mounting portion 11 and a second flow path extending in the axial direction L from the insertion space 131. R2 and a central valve chamber portion 123 in which the on-off valve 22 is arranged so as to be able to advance and retreat in the opening / closing direction (vertical direction in FIG. 1) are provided, and the flow path R is formed by the first flow path R1 and the second flow path R2. The central valve chamber portion 123 communicates with the first flow path R1 and the second flow path R2 in the radial direction orthogonal to the axial direction L, and the on-off valve 22 advances and retreats in the central valve chamber portion 123 in the radial direction. Since the opening / closing can be switched, the valve device 1 can be configured more compactly than the valve device for switching the opening / closing by moving the on-off valve forward and backward along the axial direction L.

Further, since the decompression mechanism 3 is provided in the insertion space 131, the valve device 1 having a decompression function can be configured and the hydrogen gas can be decompressed and used.
Further, since the decompression mechanism 3 is unitized and is detachably attached to the main body mechanism 2, hydrogen gas can be decompressed and used at the time of use. Further, when the storage container Y is filled with hydrogen gas, the pressure reducing mechanism 3 is removed and the storage container Y is filled directly from the insertion space 131, so that the pressure reducing mechanism 3 functions as a conduction direction regulating valve and becomes difficult to fill. Can be prevented.

Further, a valve device 1, a storage container Y to which the attachment portion 11 in the valve device 1 is attached and stored hydrogen gas, and a hydrogen combustion portion Z connected to the insertion space 131 and burning hydrogen gas are provided. The hydrogen combustion unit X can be burned in the hydrogen combustion unit Z while adjusting the derivation amount of the hydrogen gas stored in the storage container Y or by a preset derivation amount, and when an excessive pressure acts, the hydrogen combustion unit X can be burned. It can be opened.

Further, since the storage container Y stores hydrogen gas by storing it in a hydrogen storage alloy, the hydrogen gas can be safely burned.
More specifically, compared to the case where gaseous or liquid hydrogen is stored as it is in the storage container Y, the pressure when storing hydrogen gas by storing it in a hydrogen storage alloy is lower, so hydrogen gas can be burned safely. be able to.

When hydrogen gas stored in a hydrogen storage alloy is used, the hydrogen storage alloy is pulverized by repeating absorption and release of the hydrogen gas, but since the filter 51 is provided in the mounting portion 11, the powder is powdered. It is possible to prevent the embodied hydrogen storage alloy from entering the inside of the valve device 1.

In correspondence between the constitution of the present invention and the above-described embodiment, the fluid of the present invention corresponds to hydrogen gas.
Similarly below
The flow path corresponds to the flow path R,
The on-off valve corresponds to the on-off valve 22
The safety valve corresponds to the relief body 41,
The valve device corresponds to the valve device 1
The conduction port corresponds to the insertion space 131 and
The main body of the device corresponds to the body 10
The outlet corresponds to the outlet 321
The surrounding part corresponds to the cover part 30,
The axial direction corresponds to the axial direction L,
The valve closing direction corresponds to the base end side Lb,
The urging means corresponds to the relief spring 42,
The sealing part corresponds to O- rings 4a and 4b,
The branch flow path corresponds to the third flow path R3,
The storage container corresponds to the storage container Y,
The mounting part corresponds to the mounting part 11,
The first flow path corresponds to the first flow path R1 and
The second flow path corresponds to the second flow path R2,
The valve chamber corresponds to the central valve chamber 123,
The crossing direction corresponds to the radial direction,
The filter corresponds to the filter 51 (51a, 51b) and
The opening side corresponds to the base end side Lb,
The blocking ring corresponds to the fixing ring 52 and
The elastic ring corresponds to the elastic ring 53,
The decompression mechanism corresponds to the decompression mechanism 3,
The storage container corresponds to the storage container Y,
The gas combustion unit corresponds to the hydrogen combustion unit Z,
The gas consumption unit corresponds to the hydrogen combustion unit X,
The present invention is not limited to the configuration of the above-described embodiment, and many embodiments can be obtained.

For example, in the above description, hydrogen gas is used as the fluid, but it may be a liquid or a gel.
Further, the cover portion 30 may be integrally configured with the body 10, or the main body mechanism 2 and the decompression mechanism 3 may be integrally configured.

Further, in the above description, mounting grooves 132 and 133 for mounting the O-ring 4 having an elliptical cross section are provided near the center of the tubular main body 13 in the axial direction L and on the base end side Lb, and the mounting grooves 132 and 133 are provided. The mounted O-ring 4 is configured to abut on the inner surface of the relief body 41 fitted to the tubular main body 13 to seal the space between the relief body 41 and the tubular main body 13, and is mounted. The O-ring 4a mounted on the groove 132 is formed to have a smaller diameter than the O-ring 4b mounted on the mounting groove 133, and the relief body 41 moves to the tip side Lf by the differential pressure of excess pressure acting on the inclined surface 414. It was configured to open the valve. On the other hand, as shown in FIG. 10, instead of the mounting groove 133 provided on the base end side Lb of the tubular main body portion 13, the diameter center side of the tip end side Lf of the central diameter large portion 12, that is, the tubular main body portion A mounting groove 134 having a concave shape is provided at the base end side Lb with the tip side Lf open at the corner between 13 and the large central diameter portion 12, and the O-ring 4c mounted on the mounting groove 134 is mounted on the mounting groove 132. It may be formed to have a diameter larger than that of the O-ring 4a to be formed. In this case, inside the diameter of the base end side Lb of the flange 413 of the relief body 41, a bite convex portion 44 that protrudes to the base end side Lb and bites into the O-ring 4c at the valve closing position is provided.

Further, as described above, in the relief body 41, the relief body 41 can be configured with a uniform diameter without providing the tip end side ring portion 411 and the base end side ring portion 412 having a diameter larger than that of the tip end side ring portion 411. Just do it.

In this case, the flange 413 of the relief body 41 at the valve closing position (the position on the right side in FIG. 10) abuts on the O-ring 4c from the tip side Lf, and the biting convex portion 44 bites into the O-ring 4c to form the relief body 41. The space between the tubular body and the main body 13 is sealed, but since the O-ring 4c has a larger diameter than the O-ring 4a, the differential pressure of the excess pressure acts on the inside of the diameter of the flange 413 to relieve the valve. The body 41 moves to the tip end side Lf to open the valve, and can achieve the same effect as the hydrogen combustion unit X provided with the valve device 1 and the valve device 1 described above.

Although the O-ring 4c is shown in a circular cross section in FIG. 10, it may be configured by an O-ring having a rectangular cross section in which the surface of the Lf on the tip side where the biting convex portion 44 bites is flat. The same effect as that of the hydrogen combustion unit X provided with the valve device 1 and the valve device 1 can be obtained.

Further, in the above description, the valve device 1 is assembled with the hydrogen combustion unit Z to form the hydrogen combustion unit X, but a filter space 112 is provided in the attachment portion 11a of the container valve device 1a as shown in FIG. The filter unit 50 may be assembled and used. Note that FIG. 11 is a schematic view of a general container valve device, and the mounting portion 11a is shown in a cross-sectional view. Further, since the container valve device 1a has a general structure, detailed description thereof will be omitted, and the container valve device 1a is not limited to the container valve device having the illustrated structure, and may be, for example, a pin index valve. ..

As described above, the container valve device 1a in which the filter space 112 is provided in the mounting portion 11a and the filter portion 50 is assembled can exert the same effect as the effect of mounting the filter portion 50 in the valve device 1 described above. ..

Further, in a piping valve as disclosed in Patent Document 2, a filter space 112 may be provided in a mounting portion on the upstream side in the conduction direction at least during consumption, and the filter portion 50 may be assembled and used. Even in this case, the same effect as that of mounting the filter unit 50 in the valve device 1 described above can be obtained.

1 ... Valve device 1a ... Container valve device 3 ... Decompression mechanism 4a, 4b ... O-ring 10 ... Body 11 ... Mounting part 22 ... Open / close valve 30 ... Cover part 41 ... Relief body 42 ... Relief spring 51 (51a, 51b) ... Filter 52 ... Fixed ring 53 ... Elastic ring 123 ... Central valve chamber 131 ... Insertion space 321 ... Discharge port L ... Axial direction Lb ... Base end side R ... Flow path R1 ... First flow path R2 ... Second flow path R3 ... Third. Flow path X ... Hydrogen combustion unit Y ... Storage container Z ... Hydrogen combustion unit

Claims (18)

1. A valve device including a flow path through which a fluid passes, an on-off valve for switching between opening and closing in an intermediate portion of the flow path, and a safety valve for releasing the fluid having an excess pressure larger than a predetermined pressure.
   A tubular device main body having one conduction port of the flow path is surrounded, and a surrounding portion having a discharge port for communicating the outside and the inside is provided.
   The safety valve is configured inside the surrounding portion in a ring shape that fits outside the device body so as to advance and retreat along the axial direction of the device body.
   An urging means that urges the safety valve toward the valve closing direction with an urging force equal to or lower than the predetermined pressure.
   Two sealing portions that seal between the device main body and the safety valve at predetermined intervals in the axial direction.
   A branch flow path communicating with the flow path is provided between the two sealing portions between the device main body and the safety valve.
   A valve device in which the effective area of the sealing portion on the valve closing side is larger than the effective area of the sealing portion on the valve opening side of the two sealing portions.
2. An attachment part attached to the storage container for storing the fluid, and
   A first flow path extending in the axial direction from the mounting portion,
   A second flow path extending in the axial direction from the conduction port,
   A valve chamber is provided in which the on-off valve is arranged so as to be able to move forward and backward in the opening / closing direction.
   The flow path is composed of the first flow path and the second flow path.
   Claim 1 in which the first flow path and the second flow path are communicated with each other in an intersecting direction in which the valve chamber intersects in the axial direction, and the on-off valve advances and retreats in the crossing direction in the valve chamber to open and close. The valve device described in.
3. The valve device according to claim 2, wherein the branch flow path communicates with the first flow path.
4. The valve device according to claim 2 or 3, wherein a filter is provided in the mounting portion.
5. The filter is formed to have a diameter slightly smaller than the inner diameter of the mounting portion.
   The valve device according to claim 4, wherein a ring-shaped closing ring for closing the gap on the outer diameter side on the opening side of the filter is provided.
6. A plurality of the filters having different filtration accuracy are provided at predetermined intervals in the axial direction, and the filters are provided.
   The valve device according to claim 4 or 5, wherein a ring-shaped elastic ring is provided between the plurality of filters.
7. The valve device according to any one of claims 1 to 6, wherein a decompression mechanism is provided at the conduction port.
8. The valve device according to any one of claims 1 to 7.
   A storage container to which the attachment portion in the valve device is attached and gas is stored as the fluid, and
   A gas consumption unit connected to the conduction port and provided with a gas combustion unit that burns the gas.
9. The gas is hydrogen gas and
   The gas consumption unit according to claim 8, wherein the storage container stores the hydrogen gas in a hydrogen storage alloy.
10. A valve device provided with a flow path through which a fluid passes, an on-off valve for switching between opening and closing in an intermediate portion of the flow path, and a mounting portion for mounting the valve device main body at a predetermined position.
    A filter is provided on the mounting portion.
    The filter is formed to have a diameter slightly smaller than the inner diameter of the mounting portion.
    A valve device provided with a ring-shaped closing ring that closes a gap on the outer diameter side on the opening side of the filter.
11. A plurality of the filters having different filtration accuracy are provided at predetermined intervals in the axial direction, and the filters are provided.
    The valve device according to claim 10, wherein a ring-shaped elastic ring is provided between the plurality of filters.
12. A flow path through which a fluid passes, an on-off valve for switching between opening and closing in the middle portion of the flow path, a mounting portion for attaching the valve device main body at a predetermined position, and a valve chamber in which the on-off valve is arranged so as to be able to move forward and backward in the opening and closing direction. Is a valve device provided with
    A filter is provided on the mounting portion.
    A valve device provided with a plurality of the filters having different filtration accuracy at predetermined intervals in the axial direction.
13. The valve device according to claim 12, wherein a ring-shaped elastic ring is provided between the plurality of filters.
14. The filter is formed to have a diameter slightly smaller than the inner diameter of the mounting portion.
    The valve device according to claim 12 or 13, wherein a ring-shaped closing ring is provided on the opening side of the filter to close the gap on the outer diameter side.
15. The valve device according to any one of claims 10 to 14, wherein a decompression mechanism is provided at the conduction port.
16. The mounting portion is configured to be mounted on a storage container for storing the fluid.
    A first flow path extending axially from the mounting portion,
    A second flow path extending in the axial direction from the conduction port,
    A valve chamber is provided in which the on-off valve is arranged so as to be able to move forward and backward in the opening / closing direction.
    The flow path is composed of the first flow path and the second flow path.
    10. Claim 10 that the first flow path and the second flow path are communicated with each other in an intersecting direction in which the valve chamber intersects in the axial direction, and the on-off valve advances and retreats in the crossing direction in the valve chamber to open and close. The valve device according to any one of 15 to 15.
17. The valve device according to claim 15 or 16.
    A storage container to which the attachment portion in the valve device is attached and gas is stored as the fluid, and
    A gas consumption unit connected to the conduction port and provided with a gas combustion unit that burns the gas.
18. The gas is hydrogen gas and
    The gas consumption unit according to claim 17, wherein the storage container stores the hydrogen gas in a hydrogen storage alloy.

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