JP2007113641A - Fuel gas supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To evenly use fuel gas from all fuel gas tanks without accompanying the supervising of pressure in the fuel gas tanks and special control. <P>SOLUTION: A standard pressure chamber 90 of a regulator 31 is connected to a gas relay pipe 56. The gas relay pipe 56 makes hydrogen supplied from a hydrogen tank 10 corresponding to a regulator 30 flow into the standard pressure chamber 90. A regulator 31 opens a pressure control valve 87 accompanying the hydrogen stored in the hydrogen tank 10 to be used and the internal pressure to be lowered. The regulator 30 has the same structure as that of the regulator 31. A standard pressure chamber 70 of the regulator 30 is connected to the gas relay pipe 55. The regulator 30 opens the pressure control valve 67 accompanying the hydrogen stored in a hydrogen tank 11 to be used and the internal pressure to be lowered. By this structure, the pressure control valves 87, 67 of each regulator 30, 31 is opened alternately and hydrogen is used evenly from both hydrogen tanks 10, 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a fuel gas supply apparatus including a plurality of fuel gas tanks for storing gas fuel.

  The fuel gas supplied to the fuel cell system is often distributed and stored in a plurality of fuel gas tanks. The pressure of the fuel gas supplied from the fuel gas tank to the fuel cell stack of the fuel cell system is adjusted by a regulator provided corresponding to each fuel gas tank.

  In each regulator, the adjusted fuel gas pressure is set in advance, and each regulator adjusts the pressure of hydrogen supplied from the fuel gas tank to the set pressure. However, even if the same pressure is set as the set pressure of each regulator, an error occurs in the pressure of the fuel gas that is actually output (hereinafter referred to as adjustment pressure) due to the characteristic difference between the regulators. When a plurality of fuel gas tanks are installed, the fuel gas is preferentially consumed from the fuel gas tank connected to the regulator whose actual adjustment pressure is slightly high. In order to suppress this, a pressure sensor that measures the internal pressure of the fuel gas tank is provided in every fuel gas tank, and the opening and closing of the shut valve installed at the fuel gas supply port of each fuel gas tank is controlled using the measured pressure. Thus, a technique for evenly consuming fuel gas stored in each fuel gas tank is disclosed.

JP 2003-269255 A

  However, the conventional technique has a problem in that it is expensive because pressure sensors must be provided in all the fuel gas tanks. In addition, the opening and closing of the shut-off valve must be controlled while monitoring the internal pressure of the fuel gas tank, and there is a problem that it is complicated.

  The present invention has been made in view of such a problem, and when supplying fuel gas using a plurality of fuel gas tanks, the fuel gas is not monitored without monitoring the pressure in the fuel gas tank or special control. The objective is to consume evenly from all fuel gas tanks.

  In order to solve at least a part of the problems described above, in the fuel gas supply device of the present invention, a first fuel gas storage container that stores fuel gas, a second fuel gas storage container that stores fuel gas, and A first inflow port through which fuel gas flows from the first fuel gas storage container, a first reference pressure chamber into which fuel gas flows from the second fuel gas storage container, and a first reference pressure chamber flow into. A first pressure regulating valve that adjusts the pressure of the fuel gas that is urged in the valve closing direction by the pressure of the fuel gas and flows into the first inflow port, and the first that the fuel gas whose pressure is adjusted flows out. A first pressure adjusting means having a second outlet, a second inlet through which fuel gas flows from the second fuel gas storage container, and a second inlet through which fuel gas flows from the first fuel gas storage container Reference pressure chamber, fuel flowing into the second inlet A second pressure regulating valve that adjusts the pressure of the fuel gas that is urged in the valve closing direction by the pressure of the gas and that flows into the second inflow port; and the second that the fuel gas whose pressure has been adjusted flows out A second pressure adjusting means having an outlet; a first relay gas pipe connecting the second fuel gas storage container and the first reference pressure chamber; the first fuel gas storage container; The gist is to include a second relay gas pipe connecting the second reference pressure chamber.

  According to the fuel gas supply device of the present invention, the force for urging the first pressure regulating valve in the valve closing direction gradually decreases as the internal pressure of the second fuel gas storage container decreases, and the first pressure regulating valve decreases. The pressure valve is opened and fuel gas is used from the first fuel gas storage container. In addition, the force for urging the second pressure regulating valve in the valve closing direction gradually decreases as the internal pressure of the first fuel gas storage container decreases, and the second pressure regulating valve is opened to open the second fuel gas. Fuel gas is consumed from the storage container. Therefore, since the pressure regulating valve can be opened and closed according to the internal pressure of the fuel gas tank connected by the relay gas pipe, there is no need to monitor the internal pressure of each fuel gas tank, and the fuel gas stored in each fuel gas tank The fuel gas can be evenly consumed from each fuel gas tank without requiring any special control during supply.

  In the fuel gas storage container of the present invention, a first gas pipe connecting the first fuel gas storage container and the first inlet, the second fuel gas storage container, and the second fuel gas storage container are further provided. A second gas pipe connected to the inflow port, wherein the first relay gas pipe connects the second gas pipe and the first reference pressure chamber, and the second relay gas pipe. May connect the first gas pipe and the second reference pressure chamber.

  According to the fuel gas supply device of the present invention, the fuel gas stored in the first fuel gas storage container can be guided to the second reference pressure chamber with a simple configuration, and the second fuel gas storage container The fuel gas stored in can be guided to the first reference pressure chamber.

  In the present invention, the various aspects described above can be applied by appropriately combining or omitting some of them.

Hereinafter, embodiments of the present invention will be described in the following order based on examples.
A. Example:
A1. System overview:
FIG. 1 is an explanatory diagram illustrating a schematic configuration of a hydrogen supply apparatus in the present embodiment. The hydrogen supply apparatus according to this embodiment is configured as a part of a fuel cell system that generates electric power by an electrochemical reaction between hydrogen and air. The fuel cell system is provided with a fuel cell stack that is a stack of cells that generate power by an electrochemical reaction between hydrogen and air. Each cell of the fuel cell stack has a configuration in which a fuel electrode (hereinafter referred to as an anode) and an air electrode (hereinafter referred to as a cathode) are arranged with an electrolyte membrane interposed therebetween.

  The hydrogen supply apparatus 100 includes a hydrogen tank 10, a hydrogen tank 11, a gas pipe 40, a gas pipe 50, a gas pipe 51, a gas relay pipe 55, a gas relay pipe 56, a regulator 30, and a regulator 31. First, the hydrogen tank 10 and parts related to the hydrogen tank 10 will be described. A shut valve 20 is provided at the inlet / outlet of the hydrogen tank 10, and the shut valve 20 and the regulator 30 are connected via a gas pipe 50. The regulator 30 and the gas pipe 51 are connected via a gas relay pipe 55. The gas pipe 50 and the gas pipe 40 are connected via the regulator 30. Similarly, a shut valve 21 is provided at the entrance / exit of the hydrogen tank 11. The shut valve 21 and the regulator 31 are connected via a gas pipe 51. The regulator 31 and the gas pipe 50 are connected via a gas relay pipe 56. The gas pipe 51 and the gas pipe 40 are connected via the regulator 31. That is, the regulator 30 and the regulator 31 are connected via the gas pipe 40. The gas pipe 40 is connected to an anode of a fuel cell stack (not shown).

  The pressure of the hydrogen supplied from the hydrogen tank 10 to the fuel cell stack is adjusted by the regulator 30. The regulator 30 opens and closes the pressure regulating valve using the pressure of hydrogen flowing into the regulator 30 from the hydrogen tank 11 and the atmospheric pressure via the gas relay pipe 55, and controls the pressure of hydrogen flowing into the regulator 30 from the hydrogen tank 10. adjust. The regulator 31 has the same configuration as that of the regulator 30, and opens and closes the pressure regulating valve using the pressure and the atmospheric pressure of hydrogen flowing into the regulator 31 from the hydrogen tank 10 through the gas relay pipe 56. The pressure of hydrogen flowing into 31 is adjusted.

  The hydrogen stored in the hydrogen tank 10 at a high pressure is adjusted in pressure by a shut valve 20 and a regulator 30 provided at its inlet and outlet and supplied to the gas pipe 40. Similarly, the pressure of the hydrogen stored in the hydrogen tank 11 at a high pressure is adjusted by the shut valve 21 and the regulator 31 provided at the outlet of the hydrogen tank 11 and supplied to the gas pipe 40. The pressure-adjusted hydrogen is supplied to the anode of the fuel cell stack through the gas pipe 40. The structure and operation of the regulator 30 and the regulator 31 will be described below.

A2. Regulator configuration:
FIG. 2A is a cross-sectional view for explaining the structure and operation of the regulator 30. The regulator 30 includes an inlet 61, a decompression chamber 62, an atmosphere chamber 63, an outlet 64, and a reference pressure chamber 70. The decompression chamber 62 and the atmospheric chamber 63 are partitioned by a diaphragm 65. A gas pipe 51 is connected to the inlet 61, and a gas pipe 40 is connected to the outlet 64. The atmosphere chamber 63 communicates with the atmosphere via the atmosphere inlet 63 a, and a spring 66 that urges the diaphragm 65 in the valve opening direction of the pressure regulating valve 67 is provided therein. The reference pressure chamber 70 is connected to the gas relay pipe 55. A spring 71 is provided between the reference pressure chamber 70 and the pressure regulating valve 67 to urge the pressure regulating valve 67 in a closing direction via a support member 72. The seal 68 is a seal member that fills a gap between the pressure regulating valve 67 and the decompression chamber 62 when the pressure regulating valve 67 is closed, and supplements airtightness. The biasing force of the spring 66 is F1. The biasing force of the spring 71 is small enough to be ignored.

  FIG. 2B is a cross-sectional view for explaining the structure and operation of the regulator 31. The regulator 31 includes an inlet 81, a decompression chamber 82, an atmosphere chamber 83, an outlet 84, and a reference pressure chamber 90. The decompression chamber 82 and the atmospheric chamber 83 are partitioned by a diaphragm 85. The gas pipe 50 is connected to the inlet 81 and the gas pipe 40 is connected to the outlet 84. The atmosphere chamber 83 communicates with the atmosphere via the atmosphere inlet 83 a, and a spring 86 is provided inside the atmosphere chamber 83 to urge the diaphragm 85 in the valve opening direction of the pressure regulating valve 87. The reference pressure chamber 90 is connected to the gas relay pipe 56. A spring 91 is provided between the reference pressure chamber 90 and the pressure regulating valve 87 to urge the pressure regulating valve 87 in a closing direction via a support member 92. The seal 88 is a seal member that fills a gap between the pressure regulating valve 87 and the decompression chamber 82 when the pressure regulating valve 87 is closed, and supplements airtightness. The biasing force of the spring 86 is F2. The biasing force of the spring 91 is small enough to be ignored.

  In this embodiment, the pressure of hydrogen flowing into the regulator 30 from the hydrogen tank 10 is the pressure P1, the pressure of hydrogen flowing into the reference pressure chamber 70 of the regulator 30 is the reference pressure P5, and the regulated value set in the regulator 30; That is, the target pressure value of hydrogen to be output is the target pressure adjustment value Pt, and the actual pressure of hydrogen flowing out from the regulator 30 is the adjustment pressure P2. Further, the pressure of hydrogen flowing into the regulator 31 from the hydrogen tank 11 is output as the pressure P3, the pressure of hydrogen flowing into the reference pressure chamber 90 of the regulator 31 is output as the reference pressure P6, that is, the regulated value set in the regulator, that is, output. The target pressure value of hydrogen is defined as a target pressure regulation value Pt, and the actual pressure of hydrogen flowing out from the regulator 31 is defined as a regulation pressure P4. That is, the target pressure regulation value of the regulator 30 and the target pressure regulation value of the regulator 31 are the same value. When the shut valve 20 is opened, the hydrogen stored in the hydrogen tank 10 flows into the gas pipe 50 and the gas relay pipe 55. Accordingly, the pressure P1 (which is equal to the internal pressure of the hydrogen tank 10 and hereinafter also referred to as the internal pressure P1) and the reference pressure P6 have the same value. Similarly, when the shut valve 21 is opened, the hydrogen stored in the hydrogen tank 11 flows into the gas pipe 51 and the gas relay pipe 56. Accordingly, the pressure P3 (equal to the internal pressure of the hydrogen tank 11 and hereinafter also referred to as internal pressure P3) and the reference pressure P5 are equal. Therefore, when the internal pressure of the hydrogen tank 10 and the internal pressure of the hydrogen tank 11 are equal, the following formula 1 is established.

  P1 = P6 = P3 = P5 ... Formula 1

  The force acting on the pressure regulating valve 67 and the pressure regulating valve 87 and the operation of the pressure regulating valve will be described with reference to FIGS. FIG. 3 is a schematic diagram for explaining the operation of the pressure regulating valve in the present embodiment. In this embodiment, the pressure receiving area on the side of the diaphragm 65 that receives pressure from the atmosphere is Sd, the surface area of the pressure regulating valve 67 facing the decompression chamber 62, that is, the pressure receiving area that receives the adjustment pressure P2, and the reference pressure chamber. The surface area of the pressure regulating valve 67 facing 70, that is, the pressure receiving area of the reference pressure P5 is Sv. Similarly, the pressure receiving area on the side of the diaphragm 85 that receives pressure from the atmosphere is Sd, the surface area of the pressure regulating valve 87 facing the decompression chamber 82, that is, the pressure receiving area that receives the adjustment pressure P4, faces the reference pressure chamber 70. The surface area of the pressure regulating valve 67, that is, the pressure receiving area of the reference pressure P5 is Sv. Sv is sufficiently smaller than Sd. In this embodiment, the pressure receiving area of the pressure regulating valve 67 on the reference pressure chamber 70 side is equal to the pressure receiving area 62 on the pressure reducing chamber 62 side, but the present invention can be realized even if they are different. The same holds true even if the pressure receiving area on the reference pressure chamber 90 side of the pressure regulating valve 87 is different from the pressure receiving area on the decompression chamber 82 side.

  First, the pressure regulating valve 67 will be described. A biasing force F <b> 1 is applied to the pressure regulating valve 67 so that the spring 66 biases the pressure regulating valve 67 in the valve opening direction.

  The diaphragm 65 receives the pressure of the adjustment pressure P <b> 2 from the hydrogen in the decompression chamber 62. When the force that the diaphragm 65 receives due to the pressure of hydrogen in the decompression chamber 62 is F65, F65 is expressed by the following formula 2. Note that F65 is a force acting in the direction in which the pressure regulating valve 67 is closed.

  F65 = Sd · P2 Formula 2

  Further, the pressure regulating valve 67 receives the pressure of the regulated pressure P2 from the hydrogen in the decompression chamber 62. Assuming that the force received by the pressure regulating valve 67 due to the pressure of hydrogen in the decompression chamber 62 is F67, F67 is expressed by the following Expression 3. Note that F67 is a force acting in the direction in which the pressure regulating valve 67 is opened.

  F67 = Sv · P2 Formula 3

  Assuming that the force that the pressure P2 of hydrogen existing in the decompression chamber 62 acts on the pressure regulating valve 67 is Fp2, Fp2 is expressed by the following formula 4 from the above formula 2 and formula 3. In this embodiment, the force acting in the valve closing direction is positive.

  Fp2 = (Sd−Sv) · P2 Equation 4

  Since Sd is sufficiently larger than Sv, the diaphragm 65 is pushed up by the hydrogen pressure at the adjustment pressure P2. As a result, the pressure regulating valve 67 is urged in the valve closing direction by the hydrogen pressure P2 in the decompression chamber 62. The

  The pressure regulating valve 67 adjusts the pressure of hydrogen flowing into the decompression chamber 62 by opening and closing the pressure regulating valve 67 by balancing F1 and Fp2.

  Further, a force Fp5 that urges the pressure regulating valve 67 in the valve closing direction by the hydrogen of the reference pressure P5 flowing into the reference pressure chamber 90 acts on the pressure regulating valve 67. Fp5 is represented by the following formula 5.

  Fp5 = Sv · P5 ... Formula 5

  Since the pressure regulating valve 67 is urged in the valve closing direction by the reference pressure P5, the position of the pressure regulating valve 67 moves in the opening direction as the reference pressure P5 decreases.

  Subsequently, the pressure regulating valve 87 will be described. A biasing force F <b> 2 is applied to the pressure regulating valve 87 so that the spring 86 biases the pressure regulating valve 87 in the valve opening direction.

  Moreover, the diaphragm 85 receives the pressure of the adjustment pressure P4 from the hydrogen in the decompression chamber 82. When the force that the diaphragm 85 receives due to the pressure of hydrogen in the decompression chamber 82 is F85, F85 is expressed by the following Expression 6. Note that F85 is a force acting in the direction in which the pressure regulating valve 87 is closed.

  F85 = Sd · P4 ... Formula 6

  Further, the pressure regulating valve 87 receives the pressure of the regulated pressure P4 from the hydrogen in the decompression chamber 82. Assuming that the force received by the pressure regulating valve 87 due to the pressure of hydrogen existing in the decompression chamber 82 is F87, F87 is expressed by the following Expression 7. Note that F87 is a force acting in the direction in which the pressure regulating valve 87 is opened.

  F87 = Sv · P4 Equation 7

  Assuming that the force that the pressure P4 of hydrogen existing in the decompression chamber 82 acts on the pressure regulating valve 87 is Fp4, Fp4 is expressed by the following equation 8 from the above equations 6 and 7. In this embodiment, the force acting in the valve closing direction is positive.

  Fp4 = (Sd−Sv) · P4 Equation 8

  Since Sd is sufficiently larger than Sv, the diaphragm 85 is pushed up by the hydrogen pressure of the adjustment pressure P4. As a result, the pressure regulating valve 87 is urged in the valve closing direction by the hydrogen pressure P4 in the decompression chamber 82. The

  Further, the force Fp6 that urges the pressure regulating valve 87 in the valve closing direction is applied to the pressure regulating valve 87 by the hydrogen of the reference pressure P6 flowing into the reference pressure chamber 90. Fp6 is represented by Equation 9 below.

  Fp6 = Sv · P6 Equation 9

  Since the pressure regulating valve 87 is urged in the valve closing direction by the reference pressure P6, the position of the pressure regulating valve 87 moves in the opening direction as the reference pressure P6 decreases.

  In this embodiment, the internal pressure P1 of the hydrogen tank 10 is equal to the internal pressure P3 of the hydrogen tank 11 before the shut valve 20 and the shut valve 21 are opened. When the internal pressures of the hydrogen tank 10 and the hydrogen tank 11 are equal (P1 = P6 = P3 = P5, that is, Fp5 = Fp6), and the adjustment pressure P2 and the adjustment pressure P4 are both the target pressure adjustment value Pt, the pressure adjustment valve 67 and the pressure adjustment valve Since the same force is applied to each of the pressure valves 87 from the valve opening / closing direction, the valve openings of the pressure regulating valve 67 and the pressure regulating valve 87 are equal. Accordingly, the same amount of hydrogen is consumed from the hydrogen tank 10 and the hydrogen tank 11.

  However, even if the same value is set as the target pressure regulation value of the regulators 30 and 31, due to the characteristic difference between the regulators 30 and 31, the hydrogen adjustment pressure P2 and the adjustment pressure P4 that are actually output from the respective regulators. An error occurs. When a plurality of hydrogen tanks 10 and 11 are installed as in the present embodiment, hydrogen is preferentially consumed from a hydrogen tank connected to a regulator whose actual adjustment pressure is slightly higher. In this embodiment, the hydrogen pressure adjusted by the regulator 30 is higher than the hydrogen pressure adjusted by the regulator 31, that is, the adjustment pressure P2> the adjustment pressure P4. However, the error between the adjustment pressure P2 and the adjustment pressure P4 is small and does not affect the operation of the pressure regulating valve.

  When the shut valve 20 is opened, the hydrogen released from the hydrogen tank 10 is adjusted to the adjusted pressure P2 by the regulator 30 and flows into the gas pipe 40. When the shut valve 21 is opened, the hydrogen released from the hydrogen tank 11 is adjusted to the adjustment pressure P 4 by the regulator 31 and flows into the gas pipe 40. As described above, when the shut valve 20 and the shut valve 21 are opened, hydrogen is consumed from both the hydrogen tank 10 and the hydrogen tank 11, but in this embodiment, the adjustment pressure P2> the adjustment pressure P4. More hydrogen is consumed from the hydrogen tank 10 than 11, and “internal pressure P 1 of the hydrogen tank 10 <internal pressure P 3 of the hydrogen tank 11” with time. When the internal pressure P1 of the hydrogen tank 10 <the internal pressure P3 of the hydrogen tank 11, the relationship among the internal pressure P1, the reference pressure P5, the internal pressure P3, and the reference pressure P6 is P1 = P6 <P3 = P5.

  Since the reference pressure P6 becomes lower than the reference pressure P5 with time, the reference pressure P6 urges the pressure regulating valve 87 in the valve closing direction, so that the reference pressure P5 closes the pressure regulating valve 67 in the valve closing direction. Thus, the amount of movement of the pressure regulating valve 87 in the valve opening direction becomes larger than the amount of movement of the pressure regulating valve 67 in the valve opening direction. When the amount of movement of the pressure regulating valve 87 in the valve opening direction becomes larger than the amount of movement of the pressure regulating valve 67 in the valve opening direction, the amount of hydrogen released from the hydrogen tank 11 becomes the amount of hydrogen released from the hydrogen tank 10. After a certain period of time, “the internal pressure P1 of the hydrogen tank 10 = the internal pressure P3 of the hydrogen tank 11”.

  When “the internal pressure P1 of the hydrogen tank 10> the internal pressure P3 of the hydrogen tank 11”, the reference pressure P5 is lower than the reference pressure P6, and thus the reference pressure P5 urges the pressure regulating valve 67 in the valve closing direction. The force Fp5 is smaller than the force Fp6 in which the reference pressure P6 urges the pressure regulating valve 87 in the valve closing direction, and the amount of movement of the pressure regulating valve 67 in the valve opening direction is the movement of the pressure regulating valve 87 in the valve opening direction. Larger than the amount. When the amount of movement of the pressure regulating valve 67 in the valve opening direction becomes larger than the amount of movement of the pressure regulating valve 87 in the valve opening direction, the amount of hydrogen consumed from the hydrogen tank 10 is the amount of hydrogen consumed from the hydrogen tank 11. After a certain period of time, “the internal pressure P1 of the hydrogen tank 10 = the internal pressure P3 of the hydrogen tank 11”.

  Therefore, hydrogen is not preferentially consumed from either one of the hydrogen tanks, and hydrogen is consumed almost equally from both hydrogen tanks.

  As described above, the regulator 30 uses the hydrogen stored in the hydrogen tank 11 and the internal pressure decreases, so that the pressure regulating valve 67 is opened. The regulator 31 uses the hydrogen stored in the hydrogen tank 10. When the pressure regulating valve 87 is opened as the internal pressure decreases, hydrogen is evenly consumed from both hydrogen tanks.

  According to the hydrogen supply device 100 of the embodiment described above, in the regulator corresponding to each of the two hydrogen tanks, the internal pressure of the hydrogen tank associated with one regulator is used as the reference pressure of the other regulator. Thus, hydrogen can be used evenly from each hydrogen tank. Therefore, the hydrogen stored in the two hydrogen tanks can be used evenly without providing a special device, for example, a sensor for measuring the internal pressure of each hydrogen tank to monitor the internal pressure of the hydrogen tank.

B. Variation:
(1)
In the embodiment described above, two hydrogen tanks are provided and regulators corresponding to the respective hydrogen tanks are provided. However, the present invention is not limited to this. For example, when three or more hydrogen tanks are provided and the volume of each hydrogen tank is different, two hydrogen tanks with small volumes are selected, and the regulator corresponding to the selected hydrogen tank is used as the regulator of the above-described embodiment. do it. The smaller the hydrogen tank, the faster the hydrogen pressure in the hydrogen tank drops, and the temperature inside the hydrogen tank tends to become low. Therefore, according to this modification, the temperature drop inside the hydrogen tank can be suppressed. .

(2)
In the embodiment described above, the gas relay pipe 55 and the gas relay pipe 56 are connected to the gas pipe 50 and the gas pipe 51, respectively, but the present invention is not limited thereto. For example, instead of the shut valve of each hydrogen tank, a regulator is provided at the opening of each hydrogen tank,

(3)
In the above-described embodiments, the fuel cell system is described as an example, but the present invention is not limited to this. The present invention can be used as a gas supply system such as a system that supplies gas fuel to an engine that operates on gas fuel.

(4)
In the embodiment described above, the atmospheric pressure is used to urge the pressure regulating valve in the valve opening direction, but it is not limited to atmospheric pressure. For example, another gas / liquid or the like may be supplied to the atmosphere chamber without communicating a space corresponding to the atmosphere chamber with the atmosphere.

  Although various embodiments of the present invention have been described above, it is needless to say that the present invention is not limited to these embodiments and can take various configurations without departing from the spirit of the present invention.

The schematic block diagram of the hydrogen supply apparatus in an Example. Explanatory drawing explaining the operation | movement of the regulator in an Example. The schematic diagram explaining operation | movement of the pressure regulation valve in an Example.

Explanation of symbols

10, 11 ... Hydrogen tank 20, 21 ... Shut valve 30, 31 ... Regulator 40, 50, 51 ... Gas piping 55, 56 ... Gas relay piping 61 ... Inlet 62. .. Decompression chamber 63 ... Atmospheric chamber 63a ... Atmospheric inlet 64 ... Outlet 65 ... Diaphragm 66 ... Spring 67 ... Pressure regulating valve 68 ... Seal 70 ... Standard pressure Chamber 71 ... Spring 72 ... Support member 73 ... Atmosphere chamber 77 ... Pressure control valve 81 ... Inlet 81 ... Spring 82 ... Decompression chamber 83 ... Atmosphere chamber 83a. ..Air inlet 84 ... Outlet 85 ... Diaphragm 86 ... Spring 87 ... Pressure adjusting valve 90 ... Reference pressure chamber 91 ... Spring 92 ... Support member 100 ... Hydrogen Supply device

Claims (2)

A fuel gas supply device comprising:
A first fuel gas storage container for storing fuel gas;
A second fuel gas storage container for storing fuel gas;
A first inflow port through which fuel gas flows from the first fuel gas storage container, a first reference pressure chamber into which fuel gas flows from the second fuel gas storage container, and an inflow into the first reference pressure chamber A first pressure regulating valve that adjusts the pressure of the fuel gas that is urged in the valve closing direction by the pressure of the fuel gas that flows into the first inflow port, and the fuel gas that has been adjusted in pressure flows out. First pressure adjusting means having one outlet;
A second inlet through which fuel gas flows from the second fuel gas storage container; a second reference pressure chamber through which fuel gas flows from the first fuel gas storage container; and the second inlet. A second pressure regulating valve that adjusts the pressure of the fuel gas that is urged in the valve closing direction by the pressure of the fuel gas and flows into the second inflow port; and the second that the fuel gas whose pressure is adjusted flows out A second pressure adjusting means having a plurality of outlets;
A first relay gas pipe connecting the second fuel gas storage container and the first reference pressure chamber;
A fuel gas supply device comprising: a second relay gas pipe connecting the first fuel gas storage container and the second reference pressure chamber. The fuel gas supply device according to claim 1, further comprising:
A first gas pipe connecting the first fuel gas storage container and the first inlet;
A second gas pipe connecting the second fuel gas storage container and the second inlet,
The first relay gas pipe connects the second gas pipe and the first reference pressure chamber,
The second relay gas pipe is a fuel gas supply device that connects the first gas pipe and the second reference pressure chamber.

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