Container valve

Abstract

To provide a container valve that improves the operability of the control unit while also being able to be miniaturized. [Solution] The container valve has a container fixing part 2 attached to a storage container T1 for storing gas, and a valve body 101 formed on the inside of which a gas passage GC1 communicating with the inside of the storage container T1 via the container fixing part 2 and a discharge part 6 for discharging gas to the outside, a pressure reducing valve 1 provided between the gas passage GC1 and the discharge part 6 and reducing the pressure of the gas flowing in from the storage container T1 side and causing it to flow out to the discharge part 6 side, and an on / off valve 5 provided between the pressure reducing valve 1 and the discharge part 6 and opening and closing the space between the pressure reducing valve 1 and the discharge part 6 when an operating part 52 is operated.

Description

Technical Field

[0001] The present invention relates to a container valve.

Background Art

[0002] There has been proposed a container valve including a container attachment portion to which a valve body is attached to a storage container allowing storage of a fluid, a fluid inlet / outlet portion allowing inlet / outlet of the fluid in the valve body, a flow path communicating from the container attachment portion to the fluid inlet / outlet portion and having both ends open to allow passage of the fluid, and an on-off valve that switches opening and closing at an intermediate portion of the flow path (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the container valve as described in Patent Document 1, the pressure of the gas filled in the storage container acts on the on-off valve that seals (closes) the fluid inlet / outlet portion. Therefore, when operating the on-off valve, it is necessary to rotate a rotary handle that drives the on-off valve against the pressure of the gas filled in the storage container, so that the torque required to rotate the rotary handle increases. For this reason, it is necessary to increase the size of the rotary handle, and accordingly, the operability deteriorates and there is a risk that the entire container valve becomes larger.

[0005] The present invention has been made in view of the above circumstances, and an object thereof is to provide a container valve that can improve the operability of an operation portion and can be miniaturized.

Means for Solving the Problems

[0006] To achieve the above objective, the container valve according to the present invention is A valve body having a container fixing portion attached to a storage container for storing fluid, a storage container side flow path that communicates with the inside of the storage container via the container fixing portion, and a discharge portion for discharging the fluid to the outside, A pressure reducing valve is provided between the storage container side flow path and the discharge section, which reduces the pressure of the fluid flowing in from the storage container side and causes it to flow out to the discharge section side. The system includes an on-off valve provided between the pressure reducing valve and the discharge section, which opens and closes the gap between the pressure reducing valve and the discharge section when the operating section is operated. [Effects of the Invention]

[0007] According to the present invention, by interposing the on-off valve between the aforementioned pressure reducing valve and the discharge section, the pressure applied to the on-off valve can be reduced compared to the case where the on-off valve is interposed in the first flow path. Therefore, since the pressure applied to the on-off valve can be reduced, the force required to operate the operating section against that pressure can be reduced, thereby improving the operability of the operating section and enabling miniaturization of the operating section. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic diagram of a container valve according to an embodiment of the present invention. [Figure 2] The container valve according to the embodiment is shown, with (A) being a plan view and (B) being a side view. [Figure 3] This is a cross-sectional view of the container valve according to the embodiment, taken along line AA in Figure 2(A). [Figure 4] This is a cross-sectional view of the container valve according to the embodiment, taken along the line BB in Figure 2(B). [Figure 5] This is a cross-sectional view of a pressure reducing valve according to an embodiment. [Figure 6] This figure shows an example of the correlation between the primary and secondary pressures of a pressure reducing valve, as shown in the lookup table according to the embodiment. [Figure 7]This is a schematic diagram of the container valve related to a modified example. [Figure 8] This is a schematic diagram of the container valve related to a modified example. [Figure 9] This is a plan view of a modified container valve. [Modes for carrying out the invention]

[0009] Hereinafter, a container valve according to an embodiment of the present invention will be described with reference to the drawings. The container valve according to this embodiment comprises a valve body having a container fixing part attached to a storage container for storing fluid, a storage container side passage that communicates with the inside of the storage container via the container fixing part, and a discharge part for discharging fluid to the outside; a pressure reducing valve provided between the storage container side passage and the discharge part, which reduces the pressure of the fluid flowing in from the storage container side passage and causes it to flow out to the discharge part side; and an on / off valve provided between the pressure reducing valve and the discharge part, which opens and closes the space between the pressure reducing valve and the discharge part when an operating part is operated.

[0010] As shown in Figure 1, the container valve according to this embodiment comprises a valve body 101, a container fixing part 2 provided on the valve body 101 and attached to a storage container T1 for storing gas, a discharge part 6, a filling part 3, an on-off valve 5 built into the valve body 101, a pressure reducing valve 1, and a pressure sensor 4. The pressure sensor 4 is also capable of communicating with a remaining amount display device 9 that displays the remaining amount of gas stored in the storage container T1. As shown in Figures 2(A) and (B), the valve body 101 is provided with a container fixing part 2 protruding from the valve body 101 in the -Z direction, a filling part 3 protruding from the valve body 101 in the +Y direction, and a sensor attachment part 1011 protruding from the valve body 101 in the +X direction to which the pressure sensor 4 is attached. Furthermore, the pressure reducing valve 1 is continuously integrated on the +Z direction side of the valve body 101, and the on-off valve 5 is continuously integrated on the -Y direction side. Furthermore, as shown in Figure 3, the inside of the valve body 101 has a gas passage GC1 extending in the Z-axis direction and a gas passage GC4 extending in the Y-axis direction and communicating with the gas passage GC1 at its -Y end. Also, as shown in Figure 4, the sensor mounting portion 1011 has a recess 1011a recessed in the -X direction and a gas passage GC4 that communicates with the gas passage GC2 from the bottom of the recess 1011a. The inner wall of the recess 1011a has a female screw portion 1011b for fixing the pressure sensor 4 to the valve body 101.

[0011] The container fixing part 2 is cylindrical and has a male threaded portion 2a formed on its outer wall for fixing to the storage container T1. The inside of the container fixing part 2 is in communication with the gas passage GC1 of the valve body 101. The filling part 3 is for filling the storage container T1 with gas when the container valve is attached to the storage container T1, and is cylindrical and has a male threaded portion 3a formed on its outer wall into which a connector (not shown) for supplying gas from a gas supply source is screwed. The inside of the container fixing part 2 is in communication with the gas passage GC4 of the valve body 101, and when filling the storage container T1 with gas, gas is filled into the storage container T1 from the gas supply source through the connector, gas passages GC5 and GC1, and the container fixing part 2. The filling part 3 is also provided with a check valve (not shown) that allows gas to flow only from the outside of the filling part 3 in the direction of gas passages GC5 and GC1.

[0012] As shown in Figure 4, the on-off valve 5 comprises a main body 511, a valve body 512, and a valve body holder 514 that movably holds the valve body 512 relative to the main body 511. Inside the main body 511, there is a gas passage GC31 extending along the +Y direction and communicating with the gas passage GC2 of the pressure reducing valve 1 (described later) at its +Y end, a cavity 511b with a circular cross-section extending in the Y-axis direction from the -Y end of the main body 511 on the -Y side of the gas passage GC31, and a cavity 511a with a smaller diameter cross-section than cavity 511b, communicating with cavity 511b on the -Y side and with communication with gas passage GC31 on the +Y side. Inside cavity 511b, there is a female screw portion 511c for fixing the valve body holder 514. Furthermore, a recess 511e is formed at the -X-direction end of the main body 511, with a female screw portion 511f formed on the inside for fixing the discharge portion 6. In addition, a gas flow path GC32 is formed inside the main body 511, extending in the +X direction from the bottom of the recess 511e and communicating with the inside of the cavity 511a at the +X-direction end. Also, a valve seat 511d is formed between the cavities 511a and 511b, which decreases in diameter towards the -Y direction, causing the tip of the valve body 512 to move toward and away from it.

[0013] The valve body retaining portion 514 has a cylindrical retaining portion body 5141, which has a male threaded portion 514a formed on its outer wall that screws into the female threaded portion 511c of the cavity 511b, and a female threaded portion 514b formed on its inner wall that screws into the male threaded portion 512b of the valve body 512 (described later), and an outer flange portion 5142 that protrudes outward from the -Y direction end of the retaining portion body 5141 in a direction perpendicular to the Y axis direction. The valve body retaining portion 514 is screwed to the main body portion 511 with the +Y direction side of the outer flange portion 5142 in contact with the -Y direction end of the cavity 511b of the main body portion 511.

[0014] The valve body 512 is cylindrical, with a cone portion 512c formed at its tip that tapers in diameter towards the +Y direction. A groove 512a is formed in the portion facing the cavity 511a of the main body 511 on the -Y direction side, rather than the cone portion 512c in the Y direction, surrounding a central axis along the Y direction. An annular sealing member 513 is fitted into the groove 512a. An operating portion 52 is continuously and integrally provided at the -Y direction end of the valve body 512, and a male threaded portion 512b is formed in the portion facing the valve body holding portion 514 near the -Y direction end, which screws into the female threaded portion 514b of the valve body holding portion 514. The valve body 512 moves along the Y direction as the operating portion 52 rotates around its central axis along the Y direction. Then, when the valve body 512 moves in the +Y direction and the side wall of the cone portion 512c of the valve body 512 comes into contact with the valve seat 511d of the main body 511, the gas passages GC31 and GC32 are blocked and the valve is in a closed state. On the other hand, when the valve body 512 moves in the -Y direction and the side wall of the cone portion 512c of the valve body 512 separates from the valve seat 511d of the main body 511, the gas passages GC31 and GC32 are in an open state and communicate with each other.

[0015] The discharging part 6 includes a discharging part main body 611 and a bottomed cylindrical connector 612 that is rotatably attached around the central axis along the X-axis direction at the -X direction side end of the discharging part main body 611 and is connected to the gas supply destination. The discharging part main body 611 is cylindrical and has a gas flow path 611b that extends along the X-axis direction from the +X direction side end to the vicinity of the -X direction side end inside, and a gas flow path 611c that extends from the -X direction side end of the gas flow path 611b in the -Y direction and communicates with the inside of the connector 612. Further, on both sides in the X-axis direction of the portion where the gas flow path 611b opens in the side wall of the discharging part main body 611, grooves 611d and 611e are formed so as to surround the central axis along the X-axis direction of the discharging part main body 611, and annular seal members 621 and 622 are fitted into the grooves 611d and 611e respectively. The connector 612 has a through hole (not shown) formed in the bottom wall that communicates with the gas flow path 611c, and is rotatably attached around the central axis along the X-axis direction of the discharging part main body 611 with the bottom wall side facing the outer wall of the discharging part main body 611. Thereby, it prevents the gas flowing from the -Y direction side end of the gas flow path 611c into the inside of the connector 612 from leaking out through the gap between the outer wall of the discharging part main body 611 and the connector 612. Furthermore, a male screw part 611a that screws into a female screw part 511f formed inside the recess 511e of the main body part 511 of the on-off valve 5 is formed at the +X direction side end of the discharging part main body 611, and the discharging part 6 is fixed to the on-off valve 5 in a state where the male screw part 611a is screwed into the female screw part 511f.

[0016] As shown in Figure 5, the pressure reducing valve 1 comprises a pressure reducing valve body 11, a valve seat 24 formed integrally with the pressure reducing valve body 11, a valve element 21, a guide member 23, a first biasing member 31, and a second biasing member 32. The pressure reducing valve body 11 has a main body portion 111 and a cover 112 that covers the open end of the main body portion 111 on the +Z direction side. A gas flow path GC2 is formed inside the main body portion 111. Also, inside the main body portion 111, there is a cavity 111a with a circular cross-section that extends in the Z-axis direction from the +Z direction end of the main body portion 111 on the +Z direction side of the gas flow path GC2, and a cavity 111b with a smaller diameter cross-section than cavity 111a that communicates with cavity 111a on the +Z direction side and with the gas flow path GC2 on the -Z direction side. The lid 112 is cylindrical in shape and has an outer diameter approximately equal to the inner diameter of the cavity 111a of the main body 111, with a projection 1121 that protrudes in the -Z direction. An annular sealing member 1122 is fitted into the side wall of the projection 1121. A recess 112a is formed on the -Z side of the lid 112, recessed in the +Z direction from the projection 1121, and a screw hole 112b that penetrates in the Z-axis direction is formed at the bottom of the recess 112a. A female screw portion 111f is formed near the +Z end of the inner wall of the cavity 111a, and a male screw portion 1121f that screws into the female screw portion 111f is formed on the side wall of the projection 1121. The lid 112 is fixed to the main body 111 with the male threaded portion 1121f of the protrusion 1121 screwed into the female threaded portion 111f of the cavity 111a. Here, the space between the side wall of the protrusion 1121 of the lid 112 and the inner wall of the +Z direction end of the cavity 111a of the main body 111 is sealed by the sealing member 1122.

[0017] The valve seat 24 is positioned to close the open end of the main body 111 on the -Z side and has a nozzle 24a that penetrates from the gas passage GC1 to the gas passage GC2. In addition, the valve seat 24 is provided with a rib 24b on the gas passage GC2 side that protrudes in the +Z direction and has an opening at its tip where the +Z side end of the nozzle 24a is located.

[0018] The guide member 23 has a guide member main body 231a that is long and cylindrical and has an outer diameter substantially the same as the inner diameter of the cavity 111b of the main body portion 111, and an outer flange portion 231b that projects radially from a substantially central portion in the longitudinal direction of the guide member main body 231a, and guides the valve body 21 inserted inside to move along the Z-axis direction. Further, an annular seal member 232 is fitted into a groove 231c formed on the -Z direction side of the outer flange portion 231b in the longitudinal direction of the guide member 23. And the guide member 23 is arranged such that a portion on the -Z direction side of the outer flange portion 231b in its longitudinal direction is fitted into the cavity 111b of the main body portion 111, and the -Z direction side of the outer flange portion 231b abuts against a stepped portion 111c formed between the cavities 111a and 111b of the main body portion 111. Here, the space between the outer wall of the guide member 23 and the inner wall of the cavity 111b is sealed by the seal member 232.

[0019] The valve body 21 is a long, bottomed cylindrical shape, and has a valve body main body 211a positioned within the cavities 111a and 111b with its cylindrical axis aligned along the Z-axis direction and its bottom portion 211h facing the -Z direction, and an outer flange portion 211b extending from the +Z-direction end of the valve body main body 211a in a direction perpendicular to the Z-axis direction. The bottom portion 211h of the valve body main body 211a is positioned to move toward and away from the tip of the rib 24b through which the nozzle 24a opens on the valve seat 24. The -Z-direction end of the valve body main body 211a is inserted inside the guide member main body 231a of the guide member 23 and is guided by the guide member 23 to move in the Z-axis direction. An annular recess 211c is formed on the -Z-direction side of the outer flange portion 211b so as to surround the base end of the valve body main body 211a. Furthermore, a circular recess 211d is formed on the +Z direction side of the outer flange portion 211b in plan view. In addition, a groove 211e is formed on the outer wall near the -Z direction end of the valve body 211a so as to surround the central axis along the Z-axis direction of the valve body 211a, and an annular sealing member 213 is fitted inside the groove 211e. Also, a groove 211f is formed on the side wall of the outer flange portion 211b so as to surround the central axis along the Z-axis direction of the valve body 211a, and an annular sealing member 212 is fitted inside the groove 211f. As a result, the space between the outer wall of the valve body 211a and the inner wall of the guide member 23 is sealed by the sealing member 213, and the space between the side wall of the outer flange portion 211b and the inner wall of the cavity 111a is sealed by the sealing member 212. Furthermore, a through-hole 211g is provided between the bottom 211h and the groove 211e of the valve body 211, penetrating the side wall of the valve body 211. This allows the gas present in the gas flow path GC2 to flow through the through-hole 211g into the area inside the valve body 211a, filling the area enclosed by the inside of the valve body 21, the cover 112, and the biasing force adjustment member 22 with gas, and maintaining it at a pressure equal to the pressure in the gas flow path GC2.

[0020] The first biasing member 31 is, for example, a coil spring, which is compressed to a length shorter than its natural length, with one end fixed to the pressure reducing valve body 11 via the guide member 23, and the other end in contact with the valve body 21, thereby biasing the valve body 21 in a direction that separates it from the valve seat 24. More specifically, the first biasing member 31 is positioned with one end on its -Z side in contact with the outer flange portion 231b of the guide member 23, and the other end fitted inside the recess 211c of the valve body 21.

[0021] The second biasing member 32 is, for example, a coil spring, which is compressed to a length shorter than its natural length, and one end abuts against the valve body 21, biasing the valve body 21 toward the valve seat 24, thereby offsetting a portion of the biasing force of the first biasing member 31. More specifically, the second biasing member 32 is positioned such that one end on the -Z direction side is fitted inside the recess 211d of the valve body 21, and the other end is fitted inside the recess 112a of the cover 112 of the pressure reducing valve body 11.

[0022] The biasing force adjustment member 22 has a main portion 22a with a circular cross-section and a groove 22d formed on its side wall so as to surround a central axis along the Z-axis direction; a male threaded portion 22b that protrudes from the +Z-direction side of the main portion 22a in the +Z direction and has a screw formed on its side wall; and a nut member 22c that screws into the male threaded portion 22b and prevents the male threaded portion 22b from rotating around a rotation axis along the Z-axis direction relative to the pressure reducing valve body 11. An annular sealing member 222 is fitted inside the groove 22d of the main portion 22a. A recess 22e is formed on the -Z-direction side of the main portion 22a, and the +Z-direction end of the second biasing member 32 is fitted inside it. The main part 22a is positioned inside the recess 112a of the cover 112, and the male threaded part 22b is screwed into the threaded hole 112b of the cover 112, with its tip protruding outwards from the cover 112, thus fixing it to the cover 112. The nut member 22c is screwed onto the tip of the male threaded part 22b that protrudes outwards from the cover 112. This biasing force adjustment member 22 is provided so as to be movable relative to the pressure reducing valve body 11 by rotating the male threaded part 22b relative to the pressure reducing valve body 11. By changing the relative position of the biasing force adjustment member 22 with respect to the pressure reducing valve body 11, the length of the compressed second biasing member 32 can be changed, thereby adjusting the biasing force of the second biasing member 32. Furthermore, after positioning the biasing force adjustment member 22, moving the nut member 22c to the base end of the portion of the male screw portion 22b that protrudes outward from the cover 112 can prevent the male screw portion 22b from rotating relative to the pressure reducing valve body 11.

[0023] As shown in Figure 4, the pressure sensor 4 has a sensor body 41 and a sensor fixing part 42 for fixing the sensor body 41 to the valve body 101, and measures the pressure of the gas filled in the gas flow path GC2. The sensor body 41 can communicate with the remaining amount display device 9 and transmits pressure measurement value information indicating the measured pressure of the gas filled in the gas flow path GC2 to the remaining amount display device 9. The sensor fixing part 42 is cylindrical and has a gas flow path 42a formed on its inner side, extending in the X-axis direction from the -X-direction end and communicating with the sensor body 41 at the +X-direction end. A male screw part 42b is formed on its outer wall, which screws into a female screw part 1011b formed on the inner wall of the recess 1011a of the sensor attachment part 1011 of the valve body 101. The pressure sensor 4 is fixed to the sensor attachment part 1011 of the valve body 101 with the male screw part 42b screwed into the female screw part 1011b.

[0024] Returning to Figure 1, the remaining amount display device 9 comprises an MPU (Micro Processing Unit) 901, a memory 903, a display unit 904, and a communication unit 906 that communicates with the pressure sensor 4. When the communication unit 906 receives pressure measurement information transmitted from the pressure sensor 4, it transfers the received pressure measurement information to the MPU 901. The MPU 901 functions as a remaining amount estimation unit 911 that estimates the remaining amount of gas stored in the storage container T1 from the pressure measured by the pressure sensor 4, and a display control unit 912 that displays the remaining pressure of the storage container estimated by the remaining amount estimation unit 911 on the display unit 904. The memory 903 stores a lookup table 931 that shows the correlation between the primary side pressure of the pressure reducing valve 1, i.e., the pressure of the gas filled in the gas flow path GC1, and the secondary side pressure, i.e., the pressure of the gas filled in the gas flow path GC2. The lookup table 931 shows, for example, the correlation between the primary and secondary pressures of the pressure reducing valve 1, as shown in Figure 6. In this case, even if the primary pressure of the pressure reducing valve 1, i.e., the pressure of the gas filled in the gas passage GC1, is around 40 MPa, it can be seen that the secondary pressure of the pressure reducing valve 1, i.e., the pressure of the gas filled in the gas passage GC2, can be reduced to 1 MPa or less. In other words, a small pressure sensor 4 with a relatively low range of pressure measurement values ​​can be used as the pressure sensor 4. When the remaining amount estimation unit 911 receives the aforementioned pressure measurement value information from the communication unit 906, it estimates the remaining amount in the storage container T1 based on the measurement value indicated by the pressure measurement value information and the lookup table 931. The display control unit 912 then displays the remaining amount estimated by the remaining amount estimation unit 911 on the display unit 904.

[0025] As described above, in the container valve according to this embodiment, since the pressure reducing valve 1 is interposed between the gas flow path GC1 communicating with the storage container T1 and the on-off valve 5, the pressure applied to the valve body 512 in the on-off valve 5 can be reduced. Therefore, since the pressure applied to the valve body 512 of the on-off valve 5 can be reduced, the force required to operate the on-off valve 5 against that pressure can be reduced, thereby improving the operability of the operating unit 52 and also allowing for miniaturization of the operating unit 52.

[0026] Furthermore, according to the container valve of this embodiment, the pressure sensor 4 measures the pressure of the gas in a relatively low pressure range that is filled in the gas passage GC2 on the secondary side of the pressure reducing valve 1. As a result, a small pressure sensor 4 with a relatively low measurement range can be used as the pressure sensor 4, and thus the overall size of the container valve equipped with the pressure sensor 4 can be reduced.

[0027] Although embodiments of the present invention have been described above, the present invention is not limited to the configurations of the embodiments described above. For example, as shown in Figure 7, the container valve may be equipped with a plurality (two in Figure 7) of pressure reducing valves 2001A and 2001B, and the pressure on the storage container T1 side may be reduced in so-called multi-stage steps. In Figure 7, components similar to those in the embodiments are denoted by the same reference numerals as in Figure 1. Here, the valve body 2101 incorporates the pressure reducing valves 2001A and 2001B. The primary side of the pressure reducing valve 2001A is in communication with the gas flow path GC1, and the secondary side is in communication with the gas flow path GC2. The primary side of the pressure reducing valve 2001B is in communication with the gas flow path GC2, and the secondary side is in communication with the gas flow path GC2002, to which the on / off valve 5 is connected. The pressure sensor 4 may be connected to the gas flow path GC2 via the gas flow path GC3 and measure the pressure of the gas present on the secondary side of the pressure reducing valve 2001A, i.e., on the primary side of the pressure reducing valve 2001B.

[0028] Alternatively, the on-off valve 5 may be interposed between two pressure reducing valves 3001A and 3001B, as shown in Figure 8, for example. In Figure 8, components similar to those in the embodiment are denoted by the same reference numerals as in Figure 1. Here, the valve body 3101 incorporates the pressure reducing valves 3001A and 3001B. The pressure sensor 4 may be connected to the gas flow path GC2 between the secondary side of the pressure reducing valve 3001A and the on-off valve 5 via a gas flow path GC3, and measure the pressure of the gas present on the secondary side of the pressure reducing valve 3001A.

[0029] With these configurations, multi-stage pressure reduction can be achieved using multiple pressure reducing valves 2001A, 2001B, 3001A, and 3001B, thereby reducing the pressure reduction rate of each individual pressure reducing valve 2001A, 2001B, 3001A, and 3001B. Consequently, the overall pressure reduction performance of the container valve can be stabilized.

[0030] In this embodiment, for example, as shown in Figure 9, the pressure sensor 4004 may be equipped with a Bourdon tube pressure gauge 4041. In Figure 9, components similar to those in Embodiment 1 are denoted by the same reference numerals as in Figure 2(A). In this case, the user can understand the correlation between the primary and secondary pressures of the pressure reducing valve 1 in advance and predict the remaining amount of gas in the storage container T1 from the measured value displayed by the Bourdon tube pressure gauge 4041.

[0031] In the embodiment described, an example was given in which the on-off valve 5 has a so-called rotary handle type operating part 52, but the configuration of the on-off valve 5 is not limited to this. For example, the on-off valve may be such that the valve body 512 is driven in the Y-axis direction by a push-type operating part such as a button. Alternatively, the on-off valve may be such that the valve body 512 is driven in the Y-axis direction by, for example, a solenoid actuator.

[0032] In this embodiment, an example was described in which the pressure reducing valve 1 reduces the pressure of the gas flowing in from the gas flow path GC1 and discharges it into the gas flow path GC2. However, the invention is not limited to this, and the pressure reducing valve may also discharge a liquid flowing in from the primary side to the secondary side.

[0033] Although embodiments and variations of the present invention have been described above, the present invention is not limited thereto. The present invention includes embodiments and variations that are appropriately combined, and those that are appropriately modified thereto. [Industrial applicability]

[0034] The present invention is suitable as a container valve to be attached to a storage container mounted on a small mobile device. [Explanation of Symbols]

[0035] 1: Pressure reducing valve, 2: Container fixing part, 2a, 3a, 22b, 42b, 512b, 514a, 611a: Male screw part, 3: Filling part, 4: Pressure sensor, 5: On / off valve, 6: Discharge part, 11: Pressure reducing valve body, 21: Valve body, 22: Biasing force adjustment member, 22a: Main part, 23: Guide member, 24: Valve seat, 24a: Nozzle, 24b: Rib, 31: First biasing member, 32: Second biasing member, 52: Operating section, 101, 2101, 3101: Valve body, 111: Body section, 111a, 111b, 511a, 511b: Cavity, 111c: Step section, 111f, 511c, 511f, 514b, 1011b: Female thread section, 112b: Threaded hole, 112: Cover, 112a, 211c, 211d, 511e, 1011a: Recess, 122, 212, 213, 222, 23 2,513,621,622,1122: sealing member, 211a: valve body, 211b,231b,5142: outer flange, 211e,211f,231c,512a,611d,611e: groove, 211h: bottom, 231a: guide member body, 511: main body, 511d: valve seat, 512: valve body, 514: valve body retainer, 5141: retainer body, 512c: cone 611: Discharge unit body, 612: Connector, 42a, 611b, 611c, GC1, GC2, GC4, GC5, GC31, GC32: Gas flow path, 901: MPU, 903: Memory, 904: Display unit, 906: Communication unit, 911: Remaining amount estimation unit, 912: Display control unit, 931: Look-up table, 1011: Sensor attachment unit, 1121: Protrusion, T1: Storage container

Claims

1. A valve body having a container fixing portion attached to a storage container for storing fluid, a storage container side flow path that communicates with the inside of the storage container via the container fixing portion, and a discharge portion for discharging the fluid to the outside, A pressure reducing valve is provided between the storage container side flow path and the discharge section, which reduces the pressure of the fluid flowing in from the storage container side and causes it to flow out to the discharge section side. The system includes an on / off valve provided between the pressure reducing valve and the discharge section, which opens and closes the gap between the pressure reducing valve and the discharge section when the operating section is operated. Container valve.

2. The system further includes a pressure sensor for measuring the fluid pressure between the pressure reducing valve and the discharge section. A container valve according to claim 1.

3. The system further includes a remaining amount estimation unit that estimates the remaining amount of fluid stored in the storage container based on the pressure measurement value obtained by the pressure sensor. The container valve according to claim 2.

4. Multiple pressure reducing valves are provided between the storage container side flow path and the discharge section. The aforementioned on-off valve is provided between a plurality of the aforementioned pressure reducing valves and the aforementioned discharge section. A container valve according to claim 1.

5. Multiple pressure reducing valves are provided between the storage container side flow path and the discharge section. The aforementioned on-off valve is installed between any two of the plurality of aforementioned pressure reducing valves. A container valve according to claim 1.

6. The system further includes a pressure sensor for measuring the fluid pressure between any two of the multiple pressure reducing valves. A container valve according to claim 4 or 5.

7. The aforementioned discharge section is Discharge unit body, It has a connector that is rotatably mounted on the discharge unit body and connected to the destination of the fluid supply, A container valve according to any one of claims 1 to 5.

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