JP3118633U - Mobile fuel cell device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile fuel cell device capable of ensuring portability by reducing the size and weight of the entire device, securing a certain amount of hydrogen supply, and further extending the operation time.
SOLUTION: A fuel cell main body 1, a plurality of hydrogen cylinders 2 each having a cylinder valve 3 attached to a gas inlet / outlet 2a, and a pipe 4 for supplying hydrogen from each hydrogen cylinder 2 to the fuel cell main body 1 are combined into a single movable frame 6. Install and configure on top. Each cylinder valve 3 is provided with a cylinder port 12, a filling port 13, a supply port 14, and gas passages 15, 16, 17 communicating between the ports 12, 13, 14 in the valve body 11, and an open / close valve 18, a discharge valve 19 with a pressure reducing valve, and a filling valve 20 are integrally provided in the valve body 11, and the charging pressure of each hydrogen cylinder 2 is set to 34 MPa or more, and the discharge valve with a pressure reducing valve. 19, the pressure was reduced to 0.3 to 0.5 MPa.
[Selection] Figure 2

Description

  The present invention relates to a mobile fuel cell device, and more particularly, to a mobile fuel cell device capable of moving to a required site and operating the fuel cell.

  In recent years, devices using electricity have become widespread, and there are electrical devices throughout the building. Such equipment usually uses a commercial power source installed in the building, but a private power generator is required for inspection of electrical facilities, inadvertent power outages and disasters. In-house power generators have been generally equipped with a motor (internal combustion engine) as a drive source. However, in recent years, fuel cells that are free from vibration and noise and that do not generate harmful exhaust gas have attracted attention. It is being done.

As this type of mobile fuel cell device, for example, the one shown in Patent Document 1 has been known. As shown in FIG. 5, the fuel cell 104 and the hydrogen cylinder 105 are integrally mounted on the gantry 101 as shown in FIG.
The fuel cell device can be easily moved to the site in a lump. Here, the hydrogen opens the cylinder main valve via the cylinder main valve emergency shut-off device 107, supplies hydrogen from the hydrogen cylinder 105 to the fuel cell 104 via the hydrogen supply path 106, and starts the operation of the fuel cell 104. If hydrogen gas leaks unexpectedly from the hydrogen cylinder 105 or the piping 106 during the operation of the fuel cell 104 and naturally accumulates in the upper area of the building, the gas sensor 103 detects this and activates the control unit 108. As a result, the solenoid valve is closed, and as a result, the gas pressure of the non-combustible gas from the mini cylinder 109 acts via the gas pipe 110, and the cylinder main valve emergency shut-off device 107 closes the cylinder main valve. As a result, the discharge port of the hydrogen cylinder 105 is closed, the supply of hydrogen is stopped, and the power generation operation of the fuel cell 104 is stopped.
JP-A-8-315847 (in particular, FIG. 1)

  In general, in order to achieve portability, it is necessary to reduce the size of the hydrogen cylinder. However, in this case, there is a limit to securing the hydrogen supply amount, and the operating time is shortened. This point has also become a bottleneck in the practical use of the private power generation device using the fuel cell in the conventional example.

The present invention solves the above-mentioned problems, and its purpose is to ensure portability by reducing the size and weight of the entire device, and to secure a certain amount of hydrogen supply to further extend the operation time. It is an object of the present invention to provide a mobile fuel cell device capable of achieving the above.

  In order to solve such a problem, the invention described in claim 1 includes a fuel cell body 1, a plurality of hydrogen cylinders 2 each having a cylinder valve 3 attached to a gas inlet / outlet port 2 a, and fuel from each hydrogen cylinder 2. In the mobile fuel cell apparatus constructed by mounting a pipe 4 for supplying hydrogen to the battery body 1 on a single mobile gantry 6, each cylinder valve 3 includes a cylinder port 12 connected to the gas inlet / outlet port 2a, The filling port 13 connected to the hydrogen supply line, the supply port 14 connected to the inlet end of the pipe 4, and the gas passages 15, 16, 17 communicating between the three ports 12, 13, 14 are valves. An opening / closing valve 18 provided in the main body 11 and communicating / blocking the gas passages 15, 16, and 17, and a discharge with a pressure reducing valve provided in the supply port 14 A valve 19 and a filling valve 20 interposed in the filling port 13 are integrally provided in the valve main body 11, and the filling pressure of each hydrogen cylinder 2 is set to 34 MPa at the lowest, and the pressure is reduced. The mobile fuel cell apparatus is characterized in that the pressure is reduced to 0.3 to 0.5 MPa by the valved discharge valve 19 and discharged.

  Further, in order to solve the above-mentioned problem, the device according to claim 2 is the mobile fuel cell device according to claim 1, wherein each hydrogen cylinder 2 and each pipe 4 are connected via a one-touch fitting 9. It is characterized by having a configuration.

  Further, in order to solve the above-described problems, the invention described in claim 3 relates to the mobile fuel cell device according to claim 1 or 2, wherein the pressure regulator is provided at a location near each fuel cell body 1 of each pipe 4. 10 is provided, and hydrogen is supplied to the fuel cell main body 1 at 0.07 MPa or less by adjusting the pressure of the pressure regulator 10.

  Furthermore, in order to solve the above-mentioned problem, the device according to claim 4 is mounted on the movable frame 6 in the mobile fuel cell device according to any one of claims 1 to 3. The fuel cell main body 1 and the plurality of hydrogen cylinders 2 are housed in a fuel cell housing box 7 and a cylinder housing box 8, respectively, and the housing boxes 7 and 8 are configured to be separable from the movable frame 6. .

  In the device according to claim 1, each hydrogen cylinder is provided with a cylinder valve in which an opening / closing valve, a discharge valve with a pressure reducing valve, and a filling valve are integrated, and the charging pressure of the hydrogen cylinder is at least around 34 MPa. In addition to being set up, the discharge valve with a pressure reducing valve is configured to reduce the pressure to 0.3 to 0.5 MPa and discharge it, ensuring portability by reducing the size of each hydrogen cylinder and, consequently, the size and weight of the entire device. However, it is possible to secure a certain amount of hydrogen supply and further extend the operation time.

According to the second aspect of the present invention, in the mobile fuel cell device according to the first aspect, each hydrogen cylinder and the fuel cell main body are configured to communicate with each other through a pipe interposing a one-touch fitting. The communication connection between the cylinder and the fuel cell body is simplified.

In the invention according to claim 3, since the pressure regulator is provided near the fuel cell in the pipe interposing the one-touch fitting, and hydrogen is supplied to the fuel cell main body at 0.07 MPa or less, the operation possible time Can be further prolonged.

According to a fourth aspect of the present invention, the fuel cell main body and the plurality of hydrogen cylinders mounted on the movable platform are accommodated in the fuel cell accommodation box and the cylinder accommodation box, respectively, so that each accommodation box can be separated from the movable platform. Due to the configuration, the transportation of the apparatus and the like becomes easier.

Hereinafter, embodiments of a mobile fuel cell device according to the present invention will be described with reference to the drawings.
1A and 1B are external views of a mobile fuel cell device according to the present invention. FIG. 1A is a front view, and FIG. 1B is a left side view. 2 is a piping system diagram of the mobile fuel cell device according to the present invention, FIG. 3 is a circuit configuration diagram of a cylinder valve in the mobile fuel cell device, and FIG. 4 is a sectional view of the cylinder valve. ) Is a longitudinal sectional view taken along the line XX, and FIG. 5B is a longitudinal sectional view taken along the line YY perpendicular to the XX line.

  Referring to FIGS. 1 and 2, reference numeral 6 denotes a mobile gantry provided with casters at the bottom of the platform, the fuel cell storage box 7 and the cylinder storage box 8 being separable from each other at the top of the platform, and a connecting tool. It is mounted in a state of being integrally connected by. The fuel cell main body 1 is accommodated in the fuel cell housing box 7 formed in a drip-proof structure, and a plurality of, for example, three hydrogen cylinders 2 are accommodated in the cylinder housing box 8. And the three hydrogen cylinders 2 are connected by a four-pipe system in which a branch header 5 having a pressure regulator 10 is interposed, and hydrogen in each hydrogen cylinder 2 is connected to the fuel cell via the pipe 4 as necessary. The main body 1 is supplied.

  As shown in FIG. 2, each hydrogen cylinder 2 has a cylinder valve 3, which is one of the components that characterize the present invention, attached to the gas inlet / outlet 2 a, and is opened and closed with a pressure adjusting function for each cylinder valve 3. According to the operation, hydrogen is set to a filling pressure of 34 MPa or more so that the hydrogen cylinder 2 can be filled, and the filling hydrogen is reduced to 0.3 to 0.5 MPa and passed through the pipe 4 to the fuel cell main body 1. It is provided so that it can be paid out.

  Each cylinder valve 3 includes a cylinder port 12 connected to the gas inlet / outlet port 2a of each hydrogen cylinder 2, a filling port 13 connected to the hydrogen supply line, and a supply port 14 connected to the inlet end of the pipe 4. For example, gas passages 15, 16, and 17 extending in a T-shape are provided in the valve body 11 so as to communicate with the three ports 12, 13, and 14. An open / close valve 18 provided in association with the T intersection for connecting / blocking the gas passages 15, 16, 17, and a discharge valve with a pressure reducing valve provided in the supply port 14. 19 and a filling valve 20 interposed in the filling port 13 are integrally provided in the valve body 11. 3 and 4, reference numeral 20 is a filling valve realized by, for example, a check valve, 21 is a handle for opening and closing the opening / closing valve 18, and 22 is a sealing plug for closing the filling port 13. , 23 is a pressure gauge, 24 is a safety valve plug, and 25 is a secondary safety valve.

  The hydrogen cylinders 2 and the pipes 4 each having the cylinder valve 3 attached to the gas inlet / outlet port 2a are preferably connected via a one-touch fitting 9 commonly called a one-touch coupler. This one-touch fitting 9 is composed of a pair of detachable female / male couplings, and in a disengaged state, a valve built in each coupling closes the passage, and in a state where the male and female are engaged, each valve forcibly passes the passage. It is a known structure that operates so as to be opened, and one of the female and male couplings is fixed to the supply port 14 of each hydrogen cylinder 2 and the inlet side pipe end of the pipe 4.

A mode of the hydrogen discharging / filling operation of the mobile fuel cell apparatus having the above-described configuration will be described below.
(A) Hydrogen discharge to the fuel cell body 1;
The connection of the pipe 4 to each hydrogen cylinder 2 to which the cylinder valve 3 is attached can be easily, surely and quickly performed by the one-touch fitting 9. In this case, if the one-touch fitting 9 is removed, the check valve function works and hydrogen does not leak to the outside. Then, the handle 21 is turned in the valve opening direction to open the open / close valve 18, and the hydrogen in the hydrogen cylinder 2 is discharged to the fuel cell body 1. At that time, the remaining amount of hydrogen in the hydrogen cylinder 2 can be confirmed by the pressure gauge 23, and by the action of the discharge valve 19 with a pressure reducing valve, the hydrogen reduced from 0.3 to 0.5 MPa from the charging pressure of 34 MPa or more is safely Supplied.

  Hydrogen is simultaneously supplied from two hydrogen cylinders 2 in parallel. At that time, the cell stack of the fuel cell main body 1 can be supplied at a pressure of 0.07 MPa or less by the pressure regulator 10 built in the branch header 5. It should be noted that when the power load is lost or when an abnormality occurs in the fuel cell main body 1, it is preferable that the hydrogen supply is cut off by a solenoid valve (not shown) on the fuel cell side. Further, since each cylinder valve 3 is provided with a safety valve plug 24 as a primary safety valve, it works when the pressure inside the container rises abnormally and can prevent damage such as rupture of the container body. On the other hand, the secondary safety valve 25 has a mechanism in which a spring-type safety valve works when the pressure reducing valve function does not work sufficiently and becomes 1 MPa or more. When the pressure is 0.6 MPa or less, the safety valve is closed.

(B) Filling hydrogen cylinder 2 with hydrogen;
A hydrogen supply line is connected to the filling port 3 and the on-off valve 18 is opened. At that time, the one-touch fitting 9 is naturally removed, so that the check valve works and no gas leaks to the outside. On the other hand, the supply port 14 on the gas consumption port side functions as a check valve provided in the discharge valve 19 with a pressure reducing valve, so that hydrogen can be charged in a state where gas leakage is prevented.

(A) is a front view of the mobile fuel cell device according to the present invention, and (B) is a left side view of the same. The piping system diagram which concerns on this invention. The circuit block diagram of the cylinder valve 3 which concerns on this invention. 3A is a vertical cross-sectional view of the cylinder valve 3 in FIG. 3 taken along the line XX, and FIG. 4B is a vertical cross-sectional view taken along the line YY perpendicular to the line XX. The perspective view of the mobile fuel cell apparatus of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Fuel cell main body, 2 ... Hydrogen cylinder, 2a ... Gas inlet / outlet, 3 ... Cylinder valve, 4 ... Piping, 5 ... Branch header, 6 ... Moving stand, 7 ... Fuel cell storage box, 8 ... Cylinder storage box, 9 ... One-touch fitting, 10 ... pressure regulator, 11 ... valve body, 12 ... cylinder port, 13 ... filling port, 14 ... supply port, 15 ... gas passage, 16 ... gas passage, 17 ... gas passage, 18 ... Open / close valve, 19 ... discharge valve with pressure reducing valve, 20 ... valve for filling.

Claims (4)

  A fuel cell body (1), a plurality of hydrogen cylinders (2) each having a cylinder valve (3) attached to a gas inlet / outlet (2a), and hydrogen is supplied from each hydrogen cylinder (2) to the fuel cell body (1) In the mobile fuel cell device constructed by mounting the pipe (4) to be mounted on one mobile gantry (6), each cylinder valve (3) is connected to a cylinder port (2) connected to the gas inlet / outlet (2a). 12), a filling port (13) connected to the hydrogen supply line, a supply port (14) connected to the inlet end of the pipe (4), and the three ports (12), (13), ( 14) Gas passages (15), (16), (17) communicating with each other are provided in the valve body (11), and the gas passages (15), (16), (17) are communicated and blocked. Open / close valve (18) for the supply A discharge valve (19) with a pressure reducing valve provided in the port (14) and a filling valve (20) provided in the filling port (13) are integrally provided in the valve body (11). Provided that the filling pressure of each hydrogen cylinder (2) was set to 34 MPa at the lowest, and the discharge pressure with a pressure reducing valve (19) was reduced to 0.3 to 0.5 MPa and discharged. A mobile fuel cell device characterized by the above.   The mobile fuel cell device according to claim 1, wherein each hydrogen cylinder (2) and each pipe (4) are connected via a one-touch fitting (9). A pressure regulator (10) is provided at a location of each pipe (4) near the fuel cell main body (1), and hydrogen is supplied to the fuel cell main body (1) at 0.07 MPa or less by adjusting the pressure of the pressure regulator (10). The mobile fuel cell device according to claim 1 or 2, wherein the mobile fuel cell device is supplied. The fuel cell main body (1) and the plurality of hydrogen cylinders (2) mounted on the movable frame (6) are accommodated in a fuel cell accommodation box (7) and a cylinder accommodation box (8), respectively. 4. The mobile fuel cell device according to claim 1, wherein the mobile fuel cell device is configured to be separable from the mobile gantry.