JP6729761B2 - Fuel gas storage and supply system - Google Patents

Description

The present invention relates to a fuel gas storage/supply system that supplies fuel gas to a fuel cell.

Patent Document 1 discloses a fuel cell vehicle including a first tank portion for fuel gas and a second tank portion. The first tank portion and the second tank portion are connected in series by the first pipe. A filling port used for filling the fuel gas from the outside is connected to the first tank portion via a filling pipe. A high-pressure pressure reducing valve for reducing the pressure of the fuel gas before supplying it to the fuel cell is connected to the second tank portion via a second pipe. At the time of filling the fuel gas, the high-pressure pressure reducing valve is closed, and the fuel gas is filled from the filling port into the first tank portion and the second tank portion. During traveling of the fuel cell vehicle, the high-pressure pressure reducing valve is in an operating state, and the fuel gas flowing from the first tank part to the second pipe via the first pipe and the fuel gas flowing from the second tank part to the second pipe The gas is depressurized by the high pressure reducing valve and supplied to the fuel cell.

JP, 2005-148234, A

Generally, a check valve is provided at the filling port in order to prevent the fuel gas from leaking to the outside from the filling port. If the high-pressure pressure reducing valve is opened due to a failure during filling of the fuel gas, the fuel gas may not be sufficiently filled in the first tank portion and the second tank portion and may flow into the fuel cell. On the other hand, when the check valve at the filling port is opened due to a failure while the fuel cell vehicle is running, the fuel gas flows backward from the first tank portion and the second tank portion to the filling port and leaks to the outside. There is a risk that

The present invention solves at least a part of the problems described above, and can be implemented as the following modes. One aspect of the present invention is a fuel gas storage and supply system for supplying a fuel gas to a fuel cell, the filling port having a first check valve, a pressure reducing valve for adjusting the pressure of the fuel gas, and the filling port. And a fuel gas pipe connecting the pressure reducing valve, a single gas tank connected to the fuel gas pipe, the gas tank, and an upstream shut valve provided in the fuel gas pipe between the filling port and A second check valve provided in the fuel gas pipe between the filling port and the upstream shut valve, and installed in the fuel gas pipe between the upstream shut valve and the pressure reducing valve. A pressure sensor and a control device that controls opening and closing of the upstream side shut valve using a pressure measurement value of the pressure sensor, wherein the control device fills the gas tank with the fuel gas through the filling port. Sometimes, the pressure measurement value is repeatedly acquired over time from the pressure sensor, and when the rate of increase of the pressure measurement value is smaller than a predetermined rate of increase threshold value, the upstream shut valve is closed.
It is provided as a fuel gas storage and supply system.

(1) According to one aspect of the present invention, a fuel gas storage/supply system is provided. A fuel gas storage/supply system for supplying fuel gas to a fuel cell includes a filling port having a first check valve, a pressure reducing valve for adjusting the pressure of the fuel gas, and a fuel connecting the filling port and the pressure reducing valve. A gas pipe, one or more gas tanks connected to the fuel gas pipe, an upstream gas tank closest to the filling port of the one or more gas tanks, and the fuel gas pipe between the filling port Between the upstream shut valve and the pressure reducing valve, and a second check valve provided in the fuel gas pipe between the filling port and the upstream shut valve. A pressure sensor installed in the fuel gas pipe, and a control device that controls the opening and closing of the upstream shut valve using the pressure measurement value of the pressure sensor, wherein the control device is one or more of the above. When the gas tank is filled with the fuel gas through the filling port, the pressure measurement value is repeatedly acquired from the pressure sensor over time, and the increase rate of the pressure measurement value is smaller than a predetermined increase rate threshold value. In some cases, the upstream shut valve is closed.

According to the fuel gas storage/supply system of this aspect, when the fuel tank is filled with the fuel gas and the increase rate of the pressure measurement value of the pressure sensor is smaller than the predetermined increase rate threshold value, the pressure reducing valve fails. There is a high possibility that it is open. At this time, since the control device closes the upstream shut valve, it is possible to prevent the fuel gas from flowing into the fuel cell without being filled in the gas tank. Further, since the second check valve is provided between the filling port and the upstream shut valve, when the first check valve of the filling port fails and opens while the fuel gas is not being filled, The second check valve suppresses the backflow of the fuel gas to the filling port, and can prevent the fuel gas from leaking to the outside.

(2) In the fuel gas storage and supply system according to the above aspect, the controller further repeatedly acquires the pressure measurement value from the pressure sensor over time when the fuel gas is consumed in the fuel cell, The upstream shut-off valve may be closed if the rate of decrease of the pressure measurement value is greater than a predetermined rate of decrease threshold value, or if the pressure measurement value is less than a predetermined pressure threshold value. ..

According to the fuel gas storage and supply system of this aspect, when the fuel gas is consumed in the fuel cell, when the decrease rate of the pressure measurement value of the pressure sensor is larger than a predetermined decrease rate threshold value, or the pressure measurement value. Is smaller than a predetermined pressure threshold value, it is highly possible that the first check valve has failed and is open. At this time, since the control device closes the upstream shut valve, it is possible to further suppress the fuel gas from leaking to the outside.

(3) In the fuel gas storage and supply system according to the above aspect, the one or more gas tanks include a first gas tank corresponding to the upstream gas tank and a second gas tank, and the first gas tank and the second gas tank are the same. Each has a mouthpiece and a valve module connected to the mouthpiece, and the valve module is connected to the mouthpiece by branching from the sub-pipe forming a part of the fuel gas pipe and the sub-pipe. And a shut valve provided in the branch pipe, wherein the upstream shut valve is provided in the fuel gas pipe between the valve module and the filling port of the first gas tank. It may be.

Also in the fuel gas storage/supply system of this aspect, when the fuel gas is filled in the gas tank, it is possible to prevent the fuel gas from flowing into the fuel cell without being filled in the gas tank. Further, when the fuel gas is consumed in the fuel cell, the fuel gas can be prevented from leaking to the outside.

(4) In the fuel gas storage/supply system of the above aspect, a temperature sensor is installed in each of the one or more gas tanks, and the control device fills the one or more gas tanks with the fuel gas. When filled through the mouth, further, if the temperature measurement value of the temperature sensor installed in at least one gas tank of the one or more gas tanks is higher than a predetermined temperature threshold value, the upstream The side shut valve may be closed. According to the fuel gas storage/supply system of this aspect, the upstream shut valve is closed when the temperature of the gas tank becomes high due to some abnormality during the filling of the fuel gas, so that the filling of the fuel gas can be stopped.

The present invention can be realized in various forms other than the above. For example, it can be realized in the form of a fuel cell system or the like.

The schematic explanatory drawing of the fuel-gas storage supply system in 1st Embodiment of this invention. The figure explaining operation|movement of the fuel gas storage supply system during fuel gas filling. 6 is a flow chart during fuel gas filling. The figure explaining operation|movement of the fuel gas storage supply system during vehicle traveling. The flowchart while a vehicle is running. The schematic explanatory drawing of the fuel gas storage supply system in a 2nd embodiment. The schematic explanatory drawing of the fuel gas storage supply system in a 3rd embodiment.

First embodiment:
FIG. 1 is a schematic explanatory diagram of a fuel gas storage/supply system 900 according to the first embodiment of the present invention. The fuel gas storage/supply system 900 is mounted in, for example, a fuel cell vehicle and supplies hydrogen (fuel gas) to the fuel cell 400. The fuel gas storage/supply system 900 includes a filling port 100, a fuel gas pipe 200, a first gas tank 510, a second gas tank 520, and a control device 600. The first gas tank 510 corresponds to the upstream gas tank closest to the filling port 100 of the two gas tanks 510 and 520.

The filling port 100 is attached to one end of the fuel gas pipe 200, and has a receptacle 110 and a first check valve 120. The receptacle 110 is an inlet for fuel gas from the outside. The first check valve 120 is a valve that prevents the fuel gas in the fuel gas storage/supply system 900 from flowing back into the receptacle 110 and leaking to the outside.

The fuel gas pipe 200 is composed of sub-pipes 201 to 205. The sub pipe 201 is provided with a second check valve 210 and an upstream shut valve 220 in this order from the filling port 100. The second check valve 210 is a valve that prevents the backflow of fuel gas into the filling port 100. The upstream side shut valve 220 is an electromagnetic opening/closing valve, and switches opening/closing according to a signal supplied from the control device 600.

A first valve module 230 attached to the first gas tank 510 is connected between the sub pipe 201 and the sub pipe 203. The first valve module 230 has a U-shaped pipe 231 and a branch pipe 239. The U-shaped pipe 231 constitutes a part of the fuel gas pipe 200 and corresponds to the sub-pipe 202. One end of the branch pipe 239 is connected to the U-shaped pipe 231, and the other end thereof is connected to the base 511 of the first gas tank 510. The branch pipe 239 is provided with a shut valve 232 and a safety valve 233.

A second valve module 240 attached to the second gas tank 520 is connected between the sub pipe 203 and the sub pipe 205. The second valve module 240 has a U-shaped pipe 241 and a branch pipe 249, similarly to the first valve module 230. The U-shaped pipe 241 constitutes a part of the fuel gas pipe 200 and corresponds to the sub-pipe 204. One end of the branch pipe 249 is connected to the U-shaped pipe 241, and the other end is connected to the base 521 of the second gas tank 520. The branch pipe 249 is provided with a shut valve 242 and a safety valve 243.

The sub-pipe 205 is provided with a pressure reducing valve 250 and an injector 260 in order from the upstream side. The pressure reducing valve 250 adjusts the high-pressure fuel gas supplied from the gas tanks 510 and 520 to a low-pressure fuel gas. The injector 260 injects fuel gas and supplies it to the fuel cell 400.

A pressure sensor 330 is installed in the sub pipe 203 between the two valve modules 230 and 240. The pressure sensor 330 measures the pressure of the fuel gas flowing through the sub pipe 203 and supplies the measured pressure value to the control device 600. A first temperature sensor 310 and a second temperature sensor 320 are installed in the first gas tank 510 and the second gas tank 520, respectively. The temperature sensors 310 and 320 measure the temperatures of the gas tanks 510 and 520 and supply the temperature measurement values to the control device 600.

The control device 600 is configured by a microcomputer including a central processing unit and a main storage device, and controls the operation of various devices in the fuel gas storage/supply system 900. In FIG. 1, for convenience of illustration, broken lines indicate the connection relationship between the control device 600, the upstream shutoff valve 220, the temperature sensors 310 and 320, and the pressure sensor 330 for control signals and sensor signals. The control device 600 controls the opening/closing of the upstream shut valve 220 using the temperature measurement values supplied from the temperature sensors 310 and 320 and the pressure measurement value supplied from the pressure sensor 330.

Here, when the gas tanks 510 and 520 are filled with the fuel gas, the pressure reducing valve 250 is in a closed state, and the upstream shut valve 220 and the shut valves 232 and 242 of the valve modules 230 and 240 are in an open state. The fuel gas flows from the receptacle 110 of the filling port 100 into the sub pipes 201 and 202, and is filled in the first gas tank 510 via the branch pipe 239. Further, a part of the fuel gas flowing into the sub pipe 202 is filled in the second gas tank 520 via the sub pipes 203 and 204 and the branch pipe 249.

On the other hand, when the vehicle equipped with the fuel gas storage/supply system 900 and the fuel cell 400 travels, the pressure reducing valve 250, the upstream shutoff valve 220, and the shut valves 232 and 242 of the valve modules 230 and 240 are open. The fuel gas stored in the first gas tank 510 flows through the branch pipe 239, the U-shaped pipe 231, and the sub-pipes 203, 204, 205 in order, and is supplied to the fuel cell 400. The fuel gas stored in the second gas tank 520 sequentially flows through the branch pipe 249, the U-shaped pipe 241, and the sub pipe 205, and is supplied to the fuel cell 400. Since the filling port 100 has the first check valve 120, the fuel gas does not flow out from the filling port 100. Further, since the second check valve 210 is provided between the filling port 100 and the upstream shut valve 220, even if the first check valve 120 fails, the second check valve 210 causes the fuel gas to flow. Of the fuel gas can be prevented and the fuel gas can be prevented from leaking to the outside.

FIG. 2 is a diagram illustrating an operation of the fuel gas storage/supply system 900 when the pressure reducing valve 250 is opened due to a failure when the fuel tanks 510 and 520 are filled with the fuel gas. The control device 600 can send and receive signals to and from the hydrogen station 700 by infrared rays, for example. The connection relationship of control signals between the control device 600 and the hydrogen station 700 is shown by a broken line.

Hydrogen (fuel gas) stored in the hydrogen station 700 is supplied to the fuel gas storage/supply system 900 through a nozzle 710 connected to the receptacle 110 of the filling port 100. When the pressure reducing valve 250 operates normally during the filling of the fuel gas, that is, when the pressure reducing valve 250 is closed, as the fuel gas is filled in the gas tanks 510 and 520, the pressure measurement value of the pressure sensor 330 changes. Rises normally. However, when the pressure reducing valve 250 fails and opens, the fuel gas does not fill the gas tanks 510 and 520 and flows into the fuel cell 400. Therefore, the rate of increase of the pressure measurement value of the pressure sensor 330 decreases as compared with the normal case. Here, the control device 600 repeatedly acquires the pressure measurement value from the pressure sensor 330 over time, and when the rate of increase in the pressure measurement value is too small (event E11 in FIG. 2), the upstream shut valve 220 is turned on. Close (event E12 in FIG. 2). Therefore, even if the pressure reducing valve 250 fails and opens, it is possible to prevent the fuel gas from flowing into the fuel cell 400 without being filled in the gas tanks 510 and 520. The controller 600 may also cause the hydrogen station 700 to issue an alarm (event E13 in FIG. 2). With this alarm, the operator of the fuel gas filling can stop the hydrogen filling.

In the control device 600, at least one of the first temperature measurement value of the first temperature sensor 310 and the second temperature measurement value of the second temperature sensor 320 has a predetermined temperature threshold value (for example, any value within a range of 80 to 90° C.). The temperature may be higher than the temperature value of 1), the upstream shutoff valve 220 may be closed. This makes it possible to stop the filling of the fuel gas when the gas tanks 510 and 520 have a high temperature due to some abnormality during the filling of the fuel gas. However, the temperature sensors 310 and 320 may be omitted.

FIG. 3 is a flowchart for filling the fuel tanks 510 and 520 with the fuel gas. After the start of filling, in step S810, the pressure sensor 330 (FIG. 1) measures the pressure of the fuel gas flowing through the sub pipe 203 (FIG. 1) of the fuel gas pipe 200, and the pressure measurement value is used as the control device 600 (FIG. 1). ) To. In step S820, control device 600 determines whether or not the increase rate of the pressure measurement value is smaller than a predetermined increase rate threshold value. Here, the increase rate threshold value is a minimum value that is stored in the control device 600 in advance and that the fuel gas pressure increase rate is determined to be normal. This rising rate threshold value may be a constant value, or may be a value determined according to one or more parameters related to the filling of the fuel gas (for example, the remaining amount of the fuel gas before the start of filling or the environmental temperature).

When it is determined in step S820 that the increase rate of the pressure measurement value is smaller than the increase rate threshold value, the control device 600 closes the upstream shut valve 220 in step S850. As a result, in step S860, the filling of the fuel gas is stopped. On the other hand, when it is determined that the increase rate of the pressure measurement value is equal to or higher than the increase rate threshold value, the filling is continued in step S830. When the filling is completed in step S840, the nozzle 710 (FIG. 2) of the hydrogen station 700 is removed from the receptacle 110 of the filling port 100, and the filling is completed. If the filling is not completed, the pressure sensor 330 measures the pressure of the fuel gas again in step S810. When it is determined whether or not the upstream shut valve 220 needs to be closed according to the comparison between the temperature measurement values of the temperature sensors 310 and 320 and the temperature threshold value, the determination is performed in step S820.

FIG. 4 shows an operation of the fuel gas storage/supply system 900 when the first check valve 120 of the filling port 100 is broken and opened when a vehicle equipped with the fuel gas storage/supply system 900 and the fuel cell 400 travels. It is a figure explaining. When the first check valve 120 of the filling port 100 fails and opens during traveling of the vehicle, the second check valve 210 is provided between the filling port 100 and the upstream shut valve 220, so that the second check valve 210 is provided. The check valve 210 suppresses the backflow of the fuel gas into the filling port 100, and the leakage of the fuel gas can be suppressed. Further, in order to further suppress the fuel gas leakage, the following control can be performed.

In FIG. 4, as the fuel gas supplied from the gas tanks 510 and 520 is consumed by the fuel cell 400 while the vehicle is traveling, the pressure measurement value of the pressure sensor 330 normally decreases. However, when the first check valve 120 of the filling port 100 fails and opens, a part of the fuel gas supplied from the gas tanks 510 and 520 may leak from the receptacle 110 of the filling port 100 to the outside. There is a nature. At this time, if the second check valve 210 is completely closed, the fuel gas does not leak to the outside, but the second check valve 210 may not be completely closed. In this case, the decrease rate of the pressure measurement value of the pressure sensor 330 increases as compared with the normal case, and as the fuel gas leaks, the pressure measurement value decreases as compared with the normal case. Here, the control device 600 repeatedly acquires the pressure measurement value from the pressure sensor 330 over time, and when the decrease rate of the pressure measurement value is too large or the pressure measurement value is too small (event E21 in FIG. 4). Closes the upstream shut valve 220 (event E22 in FIG. 4). This suppresses the fuel gas from flowing back to the filling port 100 and leaking to the outside. The control device 600 may also issue an alarm to the driver of the vehicle.

FIG. 5 is a flowchart when a vehicle equipped with the fuel gas storage/supply system 900 and the fuel cell 400 travels. After starting traveling, in step S910, the pressure sensor 330 (FIG. 1) measures the pressure of the fuel gas flowing through the sub pipe 203 (FIG. 1) of the fuel gas pipe 200, and the pressure measurement value is used as the control device 600 (FIG. 1). ) To. In step S920, control device 600 determines whether the decrease rate of the pressure measurement value is larger than a predetermined decrease rate threshold value or whether the pressure measurement value is smaller than a predetermined pressure threshold value. To do. Here, the decrease rate threshold value is a maximum value that is stored in the control device 600 in advance and that the fuel gas pressure decrease rate is determined to be normal. Further, the pressure threshold value is stored in advance in the control device 600 and is the minimum pressure of the fuel gas for maintaining the normal operation of the fuel cell 400 (FIG. 1). The decrease rate threshold value may be a constant value, or may be a value determined according to one or more parameters related to fuel gas consumption (for example, the supply amount of fuel gas to the fuel cell 400 or the environmental temperature). .. The same applies to the pressure threshold.

If it is determined in step S920 that the decrease rate of the pressure measurement value is greater than the decrease rate threshold value, or if it is determined that the pressure measurement value is less than the pressure threshold value, control device 600 performs upstream processing in step S930. The side shut valve 220 is closed, and the process proceeds to step S940. On the other hand, if it is determined that the decrease rate of the pressure measurement value is less than or equal to the reduction rate threshold value and the pressure measurement value is greater than or equal to the pressure threshold value, the process directly proceeds to step S940. In step S940, the vehicle is stopped when the traveling is completed. If the traveling has not ended, the pressure sensor 330 measures the pressure of the fuel gas again in step S910. The control for closing the upstream shut valve 220 according to the pressure measurement value while the vehicle is traveling may be omitted.

As described above, in the first embodiment, when filling the fuel gas, when it is determined that the rate of increase of the pressure measurement value of the pressure sensor 330 is smaller than the predetermined rate of increase threshold, the control device 600. Closes the upstream shut valve 220, so that it is possible to prevent the fuel gas from flowing into the fuel cell 400 without being filled in the gas tanks 510 and 520. In addition, since the second check valve 210 is provided between the filling port 100 and the upstream shut valve 220, the first check valve 120 of the filling port 100 fails and opens when the vehicle travels. In this case, the backflow of the fuel gas to the filling port 100 is suppressed by the second check valve 210, and the fuel gas can be suppressed from leaking to the outside.

Of the gas tanks 510 and 520, the second gas tank 520 and the second valve module 240 that are closer to the pressure reducing valve 250 may be omitted. On the contrary, three or more gas tanks may be provided. In other words, the fuel gas storage and delivery system 900 is configured with one or more gas tanks. In this case, the upstream shut valve 220 is provided in the fuel gas pipe 200 (sub pipe 201) between the filling port 100 and the upstream gas tank (first gas tank 510) closest to the filling port 100. Further, the pressure sensor 330 is installed in the fuel gas pipe 200 (one of the sub pipes 201 to 205) between the upstream shut valve 220 and the pressure reducing valve 250.

-Second embodiment:
FIG. 6 is a schematic explanatory diagram of a fuel gas storage/supply system 900b in the second embodiment, and is a diagram corresponding to FIG. 1. The difference from the first embodiment shown in FIG. 1 is only the installation position of the pressure sensor 330 and the configuration of the valve modules 230b and 240b, and the other configurations are the same as those of the first embodiment. In FIG. 6, the pressure sensor 330 is connected to the U-shaped pipe 241 in the valve module 240b of the second gas tank 520. The U-shaped pipe 231 of the valve module 230b of the first gas tank 510 is provided with filters 234 and 237, check valves 236 and 238, and an opening/closing valve 235. The same applies to the valve module 240b. If the filters 234 and 237 are provided, foreign matter in the fuel gas filled from the outside can be removed. Further, by providing the check valves 236 and 238, it is possible to more reliably suppress the backflow of the fuel gas toward the filling port 100 side.

In FIG. 6, the operation (not shown) when the pressure reducing valve 250 fails and opens during the fuel gas filling is the same as the events E11 and E12 of the first embodiment shown in FIG. Further, the operation (not shown) when the first check valve 120 of the filling port 100 is broken and opened while the vehicle is traveling is similar to the events E21 and E22 of the first embodiment shown in FIG. .. The second embodiment also has substantially the same effects as the first embodiment.

-Third embodiment:
FIG. 7 is a schematic explanatory diagram of a fuel gas storage/supply system 900c in the third embodiment, and is a diagram corresponding to FIG. 1. The difference from the first embodiment shown in FIG. 1 is only the configuration of the fuel gas pipe 200c and the configurations of the valve modules 230c and 240c, and the other configurations are the same as those of the first embodiment. The fuel gas pipe 200c connects the filling port 100 and the pressure reducing valve 250, and branch channels 270 and 280 are provided in the middle thereof. The U-shaped piping is omitted in each of the valve modules 230c and 240c. The pipe 239 of the first valve module 230c is connected to the first branch flow passage 270, and the pipe 249 of the second valve module 240c is connected to the second branch flow passage 280. In FIG. 7, the upstream shut valve 220 is provided in the fuel gas pipe 200 c between the branch point of the first branch flow passage 270 and the filling port 100. With this configuration, when the first check valve 120 of the filling port 100 is broken and opened during traveling, it is possible to suppress the backflow of the fuel gas from both the first gas tank 510 and the second gas tank 520, and the fuel gas is external Can be prevented from leaking to.

In FIG. 7, the operation (not shown) when the pressure reducing valve 250 breaks down and opens while filling the fuel gas is similar to the events E11 and E12 of the first embodiment shown in FIG. Further, the operation (not shown) when the first check valve 120 of the filling port 100 is broken and opened while the vehicle is traveling is similar to the events E21 and E22 of the first embodiment shown in FIG. .. The third embodiment also has substantially the same effects as the first embodiment.

・Modification:
The present invention is not limited to the above-described embodiment, and can be implemented in various modes without departing from the scope of the invention, and the following modifications are possible, for example.

-Modification 1:
In the above embodiment, the fuel gas storage/supply system 900 was used for the on-vehicle fuel cell 400, but the present invention is also applicable to the fuel gas storage/supply system for a stationary fuel cell.

The present invention is not limited to the above-described embodiments and modified examples, and can be realized in various configurations without departing from the spirit of the invention. For example, the technical features of the embodiments corresponding to the technical features of each of the embodiments and the modifications described in the section of the summary of the invention are to solve some or all of the above problems, or the above effects. In order to achieve some or all of the above, it is possible to appropriately replace or combine. If the technical features are not described as essential in this specification, they can be deleted as appropriate.

100... Filling port 110... Receptacle 120... First check valve 200, 200c... Fuel gas piping 201-205... Sub piping 210... Second check valve 220... Upstream shut valve 230, 230b, 230c... First valve module 231... U-shaped pipe 232... Shut valve 233... Safety valve 234, 237... Filter 235... Open/close valve 236, 238... Check valve 239... Branch pipe 240, 240b, 240c... Second valve module 241... U-shaped pipe 242... Shut Valve 243... Safety valve 249... Branch pipe 250... Pressure reducing valve 260... Injector 270... First branch flow passage 280... Second branch flow passage 310... First temperature sensor 320... Second temperature sensor 330... Pressure sensor 400... Fuel cell 510 ... 1st gas tank 511... Clasp 520... 2nd gas tank 521... Clasp 600... Control device 700... Hydrogen station 710... Nozzle 900, 900b, 900c... Fuel gas storage supply system

Claims (4)

A fuel gas storage and supply system for supplying fuel gas to a fuel cell,
A filling port having a first check valve,
A pressure reducing valve for adjusting the pressure of the fuel gas,
A fuel gas pipe connecting the filling port and the pressure reducing valve,
A single gas tank connected to the fuel gas line,
Before outs Stancu, an upstream shut valve provided in the fuel gas pipe between the filling port,
A second check valve provided in the fuel gas pipe between the filling port and the upstream shut valve;
A pressure sensor installed in the fuel gas pipe between the upstream shut valve and the pressure reducing valve;
A control device for controlling the opening and closing of the upstream shut valve using the pressure measurement value of the pressure sensor,
Equipped with
Wherein the controller, when the fuel gas before outs Stancu is filled through the filling opening, wherein over time and repeatedly obtains the pressure measurements from the pressure sensor, defined rising rate of the pressure measurements in advance Closing the upstream shut-off valve if less than a predetermined rise rate threshold,
Fuel gas storage and supply system. The fuel gas storage and supply system according to claim 1,
When the fuel gas is consumed in the fuel cell, the control device further repeatedly acquires the pressure measurement value from the pressure sensor over time, and the decrease rate of the pressure measurement value is a predetermined decrease. If it is greater than a rate threshold value or if the pressure measurement value is less than a predetermined pressure threshold value, the upstream shutoff valve is closed.
Fuel gas storage and supply system. The fuel gas storage and supply system according to claim 1 or 2 ,
Before outs Stan click has a mouthpiece, and a valve module that is connected to the mouthpiece,
The valve module includes a sub-pipe forming a part of the fuel gas pipe, a branch pipe branched from the sub-pipe and connected to the base, and a shut valve provided in the branch pipe. ,
The upstream shut-off valve is provided in the fuel gas pipe between the valve module and the filling opening of the front Kiga Stancu,
Fuel gas storage and supply system. The fuel gas storage and supply system according to any one of claims 1 to 3,
The front-outs Stan click, has been installed temperature sensor,
Wherein the controller, when the fuel gas before outs Stancu is filled through the fill port, further, if the temperature measurement value before Symbol temperature sensor is higher than a predetermined temperature threshold value, said upstream Close the side shut valve,
Fuel gas storage and supply system.

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