Abstract: A tank mounting structure for holding a tank includes two first frames that hold both ends of the tank and surround the tank, and a second frame disposed between the two first frames.

Abstract: The discharge direction when the gas in the high-pressure tank is released by the opening of the plug, the high-pressure tank is arranged so as not to overlap with the position of the plug of the other adjacent high-pressure tank, or one end side of the band for fixing the high-pressure tank to the frame is a first connecting portion fixed to the frame via an elastic body, in the adjacent high-pressure tank, the first connecting portions are arranged so as to face each other, the first connecting portions arranged so as to face each other are arranged so as to be aligned in a direction parallel to the axis of the high-pressure tank.

Abstract: A system for controlling a gas supply unit supplying gas to a tank includes a pressure acquisition unit configured to acquire the pressure in the tank; and a controller configured to perform first filling for supplying the gas to the tank and to perform second filling, based on a flow rate determined based on a change in the pressure in the tank for a predetermined period of time during the first filling, by controlling the gas supply unit. The controller is configured to cause the gas supply unit to perform the first filling at a first flow rate in a case where the pressure in the tank prior to the first filling is a first pressure and perform the first filling at a second flow rate exceeding the first flow rate in a case where the pressure is a second pressure exceeding the first pressure.

Abstract: A valve device for a gas tank, includes a body and a check valve provided in an injection passage to inject gas into the gas tank. The check valve includes a valve seat, a case fixed in the injection passage while a space is provided between an inner peripheral surface of the injection passage and the case to enable gas to flow through the space, and a valve element accommodated in the case. The case includes a cylindrical portion, and is configured such that the bottom of the cylindrical portion, provided at an opposite side to the valve seat, defines a range where the valve element is axially movable. The valve element includes a head portion that can block a valve hole of the valve seat, and a sliding portion formed to be axially movable with respect to the cylindrical portion.

Abstract: A valve device includes: a body including a gas passage through which gas flows and an accommodation recess that communicates with the gas passage; a valve mechanism that controls flow of the gas flowing through the gas passage; and a cover fixed to the body such that the cover covers the accommodation recess. In the valve device, the cover includes a cover recess that opens toward the accommodation recess, and the valve mechanism is assembled to the body such that the valve mechanism is accommodated in the accommodation recess with a portion of the valve mechanism protruding from the accommodation recess and the portion of the valve mechanism is accommodated in the cover recess.

Abstract: A valve device includes a body in which a gas flow passage is provided; and a check valve provided in the gas flow passage, the check valve including a poppet and a valve seat. The poppet excluding a block portion is in a form of a hollow shaft, the block portion being located at a distal end of the poppet and having a taper shape, and the poppet has at least one side hole that provides communication between an inside and an outside of a portion of the poppet, the portion being in the form of the hollow shaft. The at least one side hole extends obliquely with respect to a central axis line of the poppet such that the at least one side hole extends along a gas flow direction inclined with respect to a direction in which the poppet moves when the check valve opens.

Abstract: A valve device for a gas tank, includes a body and a check valve provided in an injection passage to inject gas into the gas tank. The check valve includes a valve seat, a case fixed in the injection passage while a space is provided between an inner peripheral surface of the injection passage and the case to enable gas to flow through the space, and a valve element accommodated in the case. The case includes a cylindrical portion, and is configured such that the bottom of the cylindrical portion, provided at an opposite side to the valve seat, defines a range where the valve element is axially movable. The valve element includes a head portion that can block a valve hole of the valve seat, and a sliding portion formed to be axially movable with respect to the cylindrical portion.

Abstract: A safety valve mounted on a container and configured to release gas in a container in the case where the temperature rises, in which the safety is secured and a cost reduction is achieved. A movable body 12 includes a shaft portion 21 on which a compression coil spring 13 is fitted and a flange portion 22 configured to come into contact with a fusible alloy 11 by being urged by the compression coil spring 13. The flange portion 22 of the movable body 12 is provided with through holes 35 configured to discharge the fused fusible alloy 11 into a compression coil spring arrangement space 30.

Abstract: A valve device includes a body, a solenoid valve accommodated in an accommodation hole of the body, and a joint member fixed to the body. The solenoid valve includes: a sleeve having a tubular shape and fitted in the accommodation hole, and including an introduction passage and a delivery passage; and a valve element configured to open and close the passages. A U-seal is disposed between an outer wall surface of the sleeve and an inner wall surface of the accommodation hole. The body has an attachment hole that is located downstream of the delivery passage of the sleeve and opens on an outer surface of the body. The joint member including a backflow reduction valve is fixed to the attachment hole.

Abstract: A throttle valve includes a throttle valve element; a support member that supports the throttle valve element, the support member including a valve element support portion, and a shaft portion that is connected to the valve element support portion, the shaft portion having a gas passage and an inlet port; a mounting member that mounts the support member in a throttle valve flow passage; a filter that is disposed on an outer peripheral surface of the shaft portion to cover the inlet port, in a space whose axial length is defined by the shaft portion and the mounting member; and gaskets that are respectively disposed between one axial end of the filter and the mounting member and between the other axial end of the filter and the shaft portion.

Abstract: A seal body that is used for gas seal includes a seal main body in which a recessed groove is formed by arranging a pair of lips so that the lips face each other; an elastic body that is inserted in the recessed groove and expands the lips; and a rigid body that is installed in the elastic body, and restricts deformation of the elastic body, due to narrowing of the recessed groove, within an elastic deformation range.

Abstract: The valve unit includes: a body having a charging passage; a supply-side joint that connects a supply pipe; and a check valve that is disposed in the gas passage, and that inhibits gas from being discharged from the gas tank to the outside of the body. The check valve includes a check valve seat, a check valve element that comes into contact with or moves away from the check valve seat, and a positioning member that fixes the position of the check valve seat in the charging passage. The body has a fitting hole which is communicated with the charging passage and in which the supply-side joint and the positioning member are fitted. The positioning member is fitted in a second fitting hole so as to fix the position of the check valve seat even when the supply-side joint has not been fitted in a first fitting hole.

Abstract: A second protective member (62) is provided to cover a thin wall portion and its periphery of a second tank head section (92), so as to protect the thin wall portion. The thin wall portion is a region of the second tank head section (92) in which a reinforcing layer (20) has a smaller wall thickness. The second protective member (62) has a double layer structure including an inner layer made of polyurethane and an outer layer made of a material mixture of polyurethane and expanded graphite. This structure suppresses the mass and the volume of a pressure vessel from being increased by the presence of a protective layer.

Abstract: A safety valve mounted on a container and configured to release gas in a container in the case where the temperature rises, in which the safety is secured and a cost reduction is achieved. A movable body 12 includes a shaft portion 21 on which a compression coil spring 13 is fitted and a flange portion 22 configured to come into contact with a fusible alloy 11 by being urged by the compression coil spring 13. The flange portion 22 of the movable body 12 is provided with through holes 35 configured to discharge the fused fusible alloy 11 into a compression coil spring arrangement space 30.

Abstract: A fuel cell system (10) includes a pressure decrease valve (121) and a flow control valve (122) provided in a hydrogen supply line (120P) that extends from a high pressure gas tank (110) to a fuel cell (100). A low temperature environment may cause the function of these devices to decrease. Therefore, if the gas temperature inside the high pressure gas tank (110) is higher than the temperature of this low temperature environment and is a temperature at which the decreased function can be recovered, high pressure gas inside the tank is made to flow through the hydrogen supply line (120P) to expose the pressure decrease valve (121) and the like to the relatively high temperature gas before a start signal that starts the system is received.

Abstract: An object is to prevent a reduction in an inner diameter of a front end portion of a pipe to be connected, and thereby prevent an increase in a pressure loss, even when a larger axial force is secured. A piping joint structure is provided, which includes a pipe, where a first flow path for a fluid is formed therein, having an opening of the first flow path, and having a first sealing surface on an outer surface thereof; a connector where a second flow path is formed therein, having an opening of the second flow path, having a second sealing surface in an inner surface thereof, and having a male threaded portion in an outer surface thereof; and a nut having a female threaded portion to be screwed to the male threaded portion, the female threaded portion of the nut is screwed to the male threaded portion of the connector in a state that the first sealing surface of the pipe is in contact with the second sealing surface of the connector, so that the pipe is connected with the connector.

Abstract: A throttle valve includes a throttle valve element; a support member that supports the throttle valve element, the support member including a valve element support portion, and a shaft portion that is connected to the valve element support portion, the shaft portion having a gas passage and an inlet port; a mounting member that mounts the support member in a throttle valve flow passage; a filter that is disposed on an outer peripheral surface of the shaft portion to cover the inlet port, in a space whose axial length is defined by the shaft portion and the mounting member; and gaskets that are respectively disposed between one axial end of the filter and the mounting member and between the other axial end of the filter and the shaft portion.

Abstract: A valve device includes a body in which a gas flow passage is provided; and a check valve provided in the gas flow passage, the check valve including a poppet and a valve seat. The poppet excluding a block portion is in a form of a hollow shaft, the block portion being located at a distal end of the poppet and having a taper shape, and the poppet has at least one side hole that provides communication between an inside and an outside of a portion of the poppet, the portion being in the form of the hollow shaft. The at least one side hole extends obliquely with respect to a central axis line of the poppet such that the at least one side hole extends along a gas flow direction inclined with respect to a direction in which the poppet moves when the check valve opens.

Abstract: A valve device includes a body, a solenoid valve accommodated in an accommodation hole of the body, and a joint member fixed to the body. The solenoid valve includes: a sleeve having a tubular shape and fitted in the accommodation hole, and including an introduction passage and a delivery passage; and a valve element configured to open and close the passages. A U-seal is disposed between an outer wall surface of the sleeve and an inner wall surface of the accommodation hole. The body has an attachment hole that is located downstream of the delivery passage of the sleeve and opens on an outer surface of the body. The joint member including a backflow reduction valve is fixed to the attachment hole.

Abstract: A system for controlling a gas supply unit supplying gas to a tank includes a pressure acquisition unit configured to acquire the pressure in the tank; and a controller configured to perform first filling for supplying the gas to the tank and to perform second filling, based on a flow rate determined based on a change in the pressure in the tank for a predetermined period of time during the first filling, by controlling the gas supply unit. The controller is configured to cause the gas supply unit to perform the first filling at a first flow rate in a case where the pressure in the tank prior to the first filling is a first pressure and perform the first filling at a second flow rate exceeding the first flow rate in a case where the pressure is a second pressure exceeding the first pressure.