WO2022013996A1

WO2022013996A1 - Hydrogen supply system

Info

Publication number: WO2022013996A1
Application number: PCT/JP2020/027602
Authority: WO
Inventors: 俊夫高野
Original assignee: Ｊｆｅコンテイナー株式会社
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2022-01-20

Abstract

This hydrogen supply system is provided with: a plurality of mining machines that use hydrogen as fuel for a driving source; and a hydrogen supply base that, in a traveling path which is formed between working places of a mine and on which the mining machines travel, is disposed at a position serving as a shared point of traveling routes of the mining machines and supplies hydrogen to the mining machines.

Description

Hydrogen supply system

The present invention relates to a hydrogen supply system that supplies hydrogen to a mining machine in which hydrogen is used as a fuel for a driving source.

Conventionally, light oil has been widely used as a fuel for a driving source in mining machines such as dump trucks for mining (see, for example, Patent Document 1). As in Patent Document 1, mining machines that use light oil as fuel _{emit a large amount of CO 2} , which leads to global warming. Therefore, from the viewpoint of environmental protection, it is conceivable to use hydrogen as a fuel for the driving source in order to reduce _{CO 2 emissions.} In this case, hydrogen is supplied to the mining machine mainly by a fuel filling container filled with hydrogen gas.

Japanese Unexamined Patent Publication No. 2017-94859

However, when hydrogen is used as the fuel for the drive source of mining machinery, the amount of hydrogen required per day is about 500 kg, which requires a very large amount of hydrogen. Therefore, if the supply of hydrogen gas to the mining machine is slow, the mining machine cannot be made to work efficiently. Therefore, it was necessary to smoothly supply hydrogen gas to mining machinery.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a hydrogen supply system capable of smoothly supplying hydrogen gas to a mining machine.

The hydrogen supply system according to the present invention is a travel path of each of the mining machines in a travel path formed between a plurality of mining machines using hydrogen as a driving source fuel and a work place of the mine and in which the mining machinery travels. It is provided at a position that serves as a common point, and is equipped with a hydrogen supply base that supplies hydrogen to the mining machine.

According to the hydrogen supply system according to the present invention, a hydrogen supply base for supplying hydrogen to a mining machine is formed between work places of a mine and is a common point of a traveling path of each mining machine in a traveling path on which the mining machine travels. It is provided in the following position. Therefore, in order to receive the supply of hydrogen gas during the work of each mining machine, it is not necessary to make each mining machine detour and run, and the hydrogen gas can be smoothly supplied to the mining machine.

It is a schematic diagram which shows the mine to which the hydrogen supply system which concerns on embodiment is applied. It is a perspective view which shows typically the mining machine used for the hydrogen supply system which concerns on embodiment. It is a perspective view which shows typically the hydrogen supply unit used in the hydrogen supply system which concerns on embodiment. It is a figure explaining the method of loading into a mining machine and unloading from a mining machine of the hydrogen supply unit used in the hydrogen supply system which concerns on embodiment. It is a schematic diagram which shows the hydrogen supply system which concerns on embodiment. It is a figure explaining the hydrogen supply method to the drive source of the mining machine of the hydrogen supply unit used in the hydrogen supply system which concerns on embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below. Further, in the drawings below, the relationship between the sizes of the constituent members may differ from the actual one.

Embodiment.
FIG. 1 is a schematic diagram showing a mine to which the hydrogen supply system according to the embodiment is applied. FIG. 2 is a perspective view schematically showing a mining machine used in the hydrogen supply system according to the embodiment.

The mining machine used in the hydrogen supply system according to the embodiment is a mining dump truck 10, and the mining dump truck 10 transports ore or earth and sand mined in a mine as a cargo. Here, the mining machine is a general term for machines used for various operations in a mine, and in the embodiment, a dump truck 10 for mining is taken as an example, but if the mining machine has a self-propelled function, It is not limited to the dump truck 10 for mining.

As shown in FIG. 1, in the mining dump truck 10, the central control room 1 of the mining machine controls the magnitude of the traveling speed, the route selection of the traveling route 4, and the work such as loading or excavation. It is an unmanned vehicle. The mine dump truck 10 can receive operation information and transmit operating status such as own vehicle position information to the central control room 1. That is, the dump truck 10 for mining communicates with the central control room 1. Further, the dump truck 10 for mining can receive radio waves from the GPS (Global Positioning System) satellite 6 and position the own vehicle, and the information on the position of the own vehicle is central. It is transmitted to the control room 1.

In a mine, the dump truck 10 for mining is a work place (hereinafter referred to as a loading place) 2 where loading work is performed, and a loading machine such as ore or earth and sand is loaded on a loading platform 13 (described later) by a hydraulic excavator 5 which is a loading machine. (See Fig. 2). A wheel loader may be used as the loading machine. Then, the dump truck 10 for mining is unloaded at the work place (hereinafter referred to as a lumber yard) 3 where the load discharge work is performed in order to discharge the loaded ore or earth and sand. The mine dump truck 10 travels on a traveling path 4 formed between the loading site 2 and the dump truck 3. Further, the traveling path 4 is provided with a hydrogen supply base 7 for supplying hydrogen as fuel to the dump truck 10 for mining.

In the embodiment, the mine is provided with a plurality of work places (a plurality of loading fields 2 and a plurality of dump trucks 3), and a plurality of mine dump trucks 10 perform work at each work place. Then, each mine dump truck 10 travels along the travel path 4 based on the respective travel routes and moves between work places.

As shown in FIG. 2, the mining dump truck 10 has a vehicle body frame 11 which is a support structure extending in the front-rear direction, wheels 12 rotatably provided on the vehicle body frame 11, and tiltable on the vehicle body frame 11. It is loaded and includes a loading platform 13 for loading a load. The wheels 12 are provided on the left and right sides of the front portion of the vehicle body frame 11, respectively, and the front wheels 14 function as steering wheels, and the rear wheels 15 provided on the left and right sides of the rear portion of the vehicle body frame 11 and function as drive wheels, respectively. It is composed of. The rear wheels 15 are rotationally driven by a drive source 18 that uses hydrogen as fuel. The drive source 18 is, for example, a motor, and a fuel cell (not shown) is mounted on the mining dump truck 10. Then, the motor, which is the drive source 18, is rotated by using the electric energy generated by the chemical reaction between hydrogen and oxygen in the fuel cell.

A pair of hoist cylinders (not shown) are attached between the vehicle body frame 11 and the bottom of the loading platform 13. The hoist cylinder is, for example, a hydraulic cylinder that expands and contracts. Due to the expansion and contraction of the hoist cylinder, the loading platform 13 is tilted with respect to the vehicle body frame 11 between the transporting position when transporting the load and the discharging position when releasing the load from the loading platform 13.

A loading section 17 on which the hydrogen supply unit 20 is loaded is provided at the front of the dump truck 10 for mining, that is, the front of the vehicle body frame 11. It is conceivable that the loading section 17 is provided at a position other than the front portion of the mining dump truck 10, but if the loading section 17 is provided at the rear portion of the mining dump truck 10, the load is discharged from the loading platform 13. It gets in the way. Further, if the loading portion 17 is provided on the left side portion or the right side portion of the mining dump truck 10, the vehicle width becomes large, which becomes an obstacle when the mining dump truck 10 passes by another mining machine. Further, when the load is loaded on the loading platform 13, the front part of the dump truck 10 for mining is less affected by the drop of the load. Therefore, it is preferable to provide the loading portion 17 at the front portion of the mining dump truck 10.

FIG. 3 is a perspective view schematically showing a hydrogen supply unit 20 used in the hydrogen supply system according to the embodiment.

As shown in FIG. 3, the hydrogen supply unit 20 includes a fuel filling container 21 filled with hydrogen and a cassette 22 on which a plurality of fuel filling containers 21 are stacked.

The cassette 22 has a rectangular parallelepiped shape in which a plurality of stages are formed in the vertical direction, and a plurality of fuel filling containers 21 are loaded in each stage in a horizontal direction. The cassette 22 is loaded with, for example, a maximum of 32 fuel filling containers 21, but is not limited thereto. Further, the cassette 22 is made of metal in order to have strength. The shape of the cassette 22 is not limited to the rectangular parallelepiped shape, and may be any other shape as long as it has a structure capable of loading a plurality of fuel filling containers 21. Further, the cassette 22 is not limited to a structure in which a plurality of fuel filling containers 21 are loaded horizontally in each stage, a plurality of stages are formed in the horizontal direction inside, and a plurality of fuel filling containers 21 are vertically arranged in each stage. It may be a structure in which it is loaded in an orientation.

Steel wheels 23 are provided at the bottom of the cassette 22. Further, hooks 24 are provided at each of the low position at the front portion and the low position at the rear portion of the cassette 22. A rope 40 (see FIG. 4 described later) or the like can be passed through the hook 24.

The fuel filling container 21 is for filling the fuel gas, and hydrogen gas is used as the fuel gas. The hydrogen gas is compressed and stored in the fuel filling container 21. The liner of the fuel filling container 21 has a cylindrical portion 21a having a cylindrical shape and a dome portion 21b having a dome shape, and is made of, for example, an aluminum alloy or plastic. Further, the dome portion 21b of the fuel filling container 21 is provided with a fuel gas supply valve 21c to which a pipe for supplying or filling the fuel gas is connected. The fuel filling container 21 is filled with, for example, about 5 kg of hydrogen gas when the tank is full, but the fuel filling container 21 is not limited thereto.

Further, in the fuel filling container 21, CFRP (carbon fiber reinforced resin) is wound around at least the outer periphery of the cylindrical portion 21a. CFRP (carbon fiber reinforced resin) is provided to improve the mechanical strength, which is the required pressure resistance of the fuel filling container 21. By having the fuel filling container 21 having the above configuration, it is possible to reduce the weight of the fuel filling container 21 as compared with a conventional steel container filled with fuel gas while ensuring the required strength. Further, the fuel filling container 21 is firmly fixed to the cassette 22 by, for example, a belt (not shown).

FIG. 4 is a diagram illustrating a method of loading and unloading the hydrogen supply unit 20 used in the hydrogen supply system according to the embodiment into the mining machine and unloading from the mining machine.

As shown in FIG. 4, a rail 17a is provided on the upper surface of the loading portion 17 provided at a low position in the front portion of the vehicle body frame 11. Further, a pulley 19 is provided at a low position in the front portion of the vehicle body frame 11.

The hydrogen supply base 7 is provided with a base 8, and a rail 8a is provided on the upper surface of the base 8. The base 8 and the loading portion 17 are provided so that the upper surfaces thereof are at the same height, and the rail 8a on the base 8 and the rail 17a on the loading portion 17 are provided so as to be at the same height. ..

As a method of loading the hydrogen supply unit 20 onto the mining dump truck 10, first, the positions of the rail 8a on the base 8 and the rail 17a on the loading portion 17 are aligned. After that, the wheels 23 are arranged on the

rails

8a and 17a, and the rope 40 is passed through the hook 24 and the pulley 19 on the front side (body frame 11 side). Then, by pulling the rope 40 rearward (on the side opposite to the vehicle body frame 11), the hydrogen supply unit 20 moves on the

rails

8a and 17a, slides forward, and is loaded on the loading unit 17. A wire or the like may be used instead of the rope 40.

On the other hand, as a method of unloading the hydrogen supply unit 20 from the mining dump truck 10, first, the positions of the rail 8a on the base 8 and the rail 17a on the loading portion 17 are aligned. After that, the wheels 23 are arranged on the

rails

8a and 17a, and the rope 40 is passed through the rear hook 24. Then, by pulling the rope 40 backward, the hydrogen supply unit 20 moves on the

rails

8a and 17a, slides backward, and is unloaded from the loading portion 17.

As described above, since the loading unit 17 is provided at a low position in the front portion of the vehicle body frame 11, the hydrogen supply unit 20 is slid horizontally without moving in the vertical direction to the loading unit 17. Can be loaded and unloaded from the loading unit 17. Therefore, it is possible to prevent the hydrogen supply unit 20 from falling to the ground or the like when the hydrogen supply unit 20 is loaded on the loading unit 17 and when the hydrogen supply unit 20 is unloaded from the loading unit 17.

FIG. 5 is a schematic diagram showing a hydrogen supply system according to an embodiment.

As shown in FIG. 5, a hydrogen production facility 31 for producing hydrogen gas is provided at a position different from the mine. The hydrogen production facility 31 produces hydrogen gas by utilizing the solar power generation by the solar power generation system 30. The hydrogen gas produced in the hydrogen production facility 31 is filled in the ISO tank container 32. The ISO tank container 32 filled with a large amount of hydrogen gas is transported to the hydrogen supply base 7. Then, at the hydrogen supply base 7, hydrogen gas is filled from the ISO tank container 32 to the fuel filling container 21 of the hydrogen supply unit 20. At this time, the compressor 33 is used, and hydrogen gas having a predetermined pressure is filled in the fuel filling container 21 of the hydrogen supply unit 20. After each fuel filling container 21 is filled with hydrogen, the hydrogen supply unit 20 is loaded on the mining dump truck 10, and the hydrogen supply unit 20 loaded on the mining dump truck 10 is unloaded. .. That is, at the hydrogen supply base 7, the hydrogen supply unit 20 filled with a predetermined amount of hydrogen and the hydrogen supply unit 20 in which the remaining amount of hydrogen loaded in the loading unit 17 of the mine dump truck 10 is reduced. The exchange will take place.

Here, when there are a plurality of loading sites 2 in the mine, the hydrogen supply base 7 is provided in the traveling path 4 between the confluence point of the plurality of loading sites 2 and the dumping site 3. When there are a plurality of lumber yard 3, the hydrogen supply base 7 is provided in the traveling path 4 between the loading yard 2 and the confluence of the plurality of lumber yard 3. Further, when there are a plurality of loading sites 2 and a plurality of dumping sites 3, the hydrogen supply base 7 has a traveling path 4 between the confluence points of the plurality of loading sites 2 and the confluence points of the plurality of dumping sites 3. It is provided in. That is, the hydrogen supply base 7 is provided at a position on the travel path 4 which is a common point of the travel path of each mining machine.

As described above, the hydrogen supply base 7 for supplying hydrogen to the dump truck 10 for mining is provided in the traveling path 4 between the loading site 2 and the dumping site 3. Therefore, in order to receive the hydrogen gas supply during the work of each mine dump truck 10, it is not necessary to make each mine dump truck 10 detour and run, and the hydrogen gas supply to the mine dump truck 10 is smooth. Can be done.

As described above, in the hydrogen supply system according to the embodiment, the hydrogen gas is supplied to the mine dump truck 10 by replacing the hydrogen supply unit 20 loaded on the mine dump truck 10 at the hydrogen supply base 7. It is a cassette type performed by. In this cassette type, hydrogen gas is not produced at the hydrogen supply base 7, and the hydrogen production facility 31 is provided at a place different from the hydrogen supply base 7.

As a hydrogen supply method, it is conceivable to use a hydrogen station method in which hydrogen gas is produced at the hydrogen supply base 7 and the hydrogen gas is supplied to the dump truck 10 for mining, but that method is a hydrogen supply base. It is necessary to provide equipment for producing hydrogen in 7. Therefore, it is difficult to move the hydrogen supply base 7. On the other hand, in the cassette type, it is not necessary to install many devices and large equipment in the hydrogen supply base 7 as compared with the hydrogen station type, so that the hydrogen supply base 7 can be easily moved.

Since the mine will not be used after mining for a certain period of time, if a hydrogen supply base 7 is provided in the traveling path 4 in the hydrogen station method, the hydrogen supply base 7 will be wasted, but the cassette type is used. If there is, the hydrogen supply base 7 can be moved, which is advantageous in terms of cost.

Further, in the hydrogen station method, it is necessary to stop the mine dump truck 10 while supplying hydrogen gas to the mine dump truck 10, and the operation rate is lowered by that amount. Further, in order to shorten the supply time of hydrogen gas to the dump truck 10 for mining, it is necessary to provide many devices and equipment such as a pressure accumulator, a precooler, and a dispenser, which increases the initial cost. In addition, a large number of piping systems and fittings are required, which increases maintenance and inspection costs.

On the other hand, in the case of the cassette type, the work of filling the hydrogen gas supply unit 20 with hydrogen gas and the work of replacing the hydrogen supply unit 20 loaded on the mine dump truck 10 can be performed separately. Therefore, in the cassette type, the mining dump truck 10 only needs to be stopped during the replacement work of the hydrogen supply unit 20 loaded on the mining dump truck 10, and the decrease in the operating rate can be suppressed. Further, since the time required for the replacement work of the hydrogen supply unit 20 loaded on the mine dump truck 10 is short, if the replacement timing of the hydrogen supply unit 20 can be increased, the amount of hydrogen gas filled in the hydrogen supply unit 20 can be increased. Can be reduced. Therefore, by doing so, the equipment cost can be reduced, and the weight of the hydrogen supply unit 20 can be reduced, so that the fuel consumption of the mining dump truck 10 on which the hydrogen supply unit 20 is loaded can be improved.

From the above, in the hydrogen supply system according to the embodiment, as a hydrogen supply method, the hydrogen supply unit 20 filled with hydrogen gas produced in the hydrogen production facility 31 is carried to the hydrogen supply base 7, and the hydrogen supply base 7 is used for mining. A cassette type is adopted in which the hydrogen supply unit 20 loaded on the dump truck 10 is replaced.

Next, the replacement timing of the hydrogen supply unit 20 at the hydrogen supply base 7 will be described.
At the hydrogen supply base 7, the operator confirms that the hydrogen supply unit 20 is filled with a predetermined amount of hydrogen gas by using a pressure gauge (not shown), and loads the hydrogen supply truck 10 on the mine dump truck 10. The data regarding the time transition of the hydrogen gas consumption of the mining dump truck 10 (hereinafter, also referred to as the first data) and the data regarding the operating status of the mining dump truck 10 (hereinafter, also referred to as the second data) are available. It is sent to the central control room 1. In the central control room 1, hydrogen is supplied using data on the time transition of hydrogen gas consumption converted from the power generation amount of the fuel cell of the mine dump truck 10 and data on the operating status of the mine dump truck 10. The replacement timing of the unit 20 is determined. When the replacement timing of the hydrogen supply unit 20 is determined, a control signal including information on the replacement timing determined for the mining dump truck 10 is transmitted from the central control room 1, and the mining dump truck 10 that has received the control signal is determined. Head to the hydrogen supply base 7 in time for the replacement timing. When the mine dump truck 10 arrives at the hydrogen supply base 7, the worker sets the hydrogen supply unit 20 loaded on the mine dump truck 10 and the hydrogen supply unit 20 filled with a predetermined amount of hydrogen gas. Exchange. The operator confirms the remaining amount of hydrogen gas in the hydrogen supply unit 20 loaded on the dump truck 10 for mining by using a pressure gauge (not shown), determines the required filling amount, and determines the required filling amount of the ISO tank container 32. Fill with hydrogen gas from.

From the above, the mine dump truck 10 can head to the hydrogen supply base 7 at the optimum timing, and the hydrogen supply unit 20 of the mine dump truck 10 can be replaced at the optimum timing. Therefore, hydrogen gas can be smoothly supplied to the mining machine.

FIG. 6 is a diagram illustrating a method of supplying hydrogen to the drive source 18 of the mining machine of the hydrogen supply unit 20 used in the hydrogen supply system according to the embodiment.

In the mine dump truck 10 which is a mining machine, as a method of supplying hydrogen from the loaded hydrogen supply unit 20 to the drive source 18, first, the fuel gas supply valve 21c of each fuel filling container 21 is connected to the collective pipe 421. One end (hereinafter referred to as a branch side) 422 is connected. Then, the other end 423 of the collecting pipe 421 (hereinafter referred to as the collecting side) is connected to the fuel side pipe 425 of the connecting pipe 424 provided in the dump truck 10 for mining. The drive source 18 of the mining dump truck 10 is connected to the drive-side pipe 426 of the connection pipe 424 via an extension hose 432.

A plurality of fuel-side pipes 425 of the connection pipe 424 are provided, and the end portion 423 of the collective pipe 421 on the collective side is connected to each of the fuel-side pipes 425. That is, a plurality of collective pipes 421 are connected to the connection pipe 424.

The drive side pipe 426 of the connection pipe 424 is provided with a first on-off valve 428 that allows or shuts off the flow of hydrogen gas in the pipe by opening and closing. Further, a pressure reducing valve 427 for reducing the pressure of high-pressure hydrogen gas in the fuel filling container 21 is provided on the drive source 18 side of the first on-off valve 428 of the drive side pipe 426 of the connecting pipe 424.

The fuel side pipe 425 of the connection pipe 424 is provided with a second on-off valve 429 that allows or shuts off the flow of hydrogen gas in the pipe by opening and closing. Further, the fuel side pipe 425 of the connection pipe 424 is provided with a pressure gauge 430 for detecting the pressure of hydrogen gas in the pipe. Further, the connection pipe 424 is provided with a safety valve 431 for opening the connection pipe 424 and releasing hydrogen gas to the outside in the event of an abnormality.

Then, by opening the first on-off valve 428 and the second on-off valve 429 and opening the pressure reducing valve 427, the high-pressure hydrogen gas in the fuel filling container 21 is decompressed by the pressure reducing valve 427 to mine. It is supplied to the drive source 18 of the dump truck 10. The pressure reducing valve 427 is controlled to a predetermined opening degree based on the pressure detected by the pressure gauge 430. By doing so, the hydrogen gas of a predetermined pressure can be supplied to the drive source 18 from the hydrogen supply unit 20 loaded on the dump truck 10 for mining.

As described above, the hydrogen supply system according to the embodiment is provided for each mining machine in a plurality of mining machines in which hydrogen is used as a fuel for the drive source 18 and a travel path 4 formed between the working places of the mining and in which the mining machine travels. It is provided at a common point of the traveling route of the above, and is equipped with a hydrogen supply base 7 for supplying hydrogen to mining machinery.

According to the hydrogen supply system according to the embodiment, the hydrogen supply base 7 for supplying hydrogen to the mining machine is formed between the work places of the mine, and in the traveling path 4 on which the mining machine travels, the traveling path of each mining machine It is installed at a position that is a common point. Therefore, in order to receive the supply of hydrogen gas during the work of each mining machine, it is not necessary to make each mining machine detour and run, and the hydrogen gas can be smoothly supplied to the mining machine.

Further, in the hydrogen supply system according to the embodiment, the mine is provided with a plurality of loading sites 2 and a plurality of dumping sites 3, respectively, and the hydrogen supply base 7 has a plurality of confluence points of the plurality of loading sites 2 and a plurality of sites. It is provided in the traveling path 4 between the confluence of the dumping yard 3 and the yard 3.

According to the hydrogen supply system according to the embodiment, the hydrogen supply base 7 is provided in the traveling path 4 between the confluence point of the plurality of loading sites 2 and the confluence point of the plurality of lumber yard 3. .. That is, the hydrogen supply base 7 is provided at a position where the dump truck 10 for mining always passes during the work. Therefore, in order to receive the hydrogen gas supply during the work of each mine dump truck 10, it is not necessary to make each mine dump truck 10 detour and run, and the hydrogen gas supply to the mine dump truck 10 is smooth. Can be done.

Further, in the hydrogen supply system according to the embodiment, the mining machine is equipped with a plurality of fuel filling containers 21 filled with hydrogen, and a loading unit 17 on which a hydrogen supply unit 20 for supplying hydrogen to the drive source 18 is loaded. At the hydrogen supply base 7, the hydrogen supply unit 20 loaded on the loading unit 17 of the mining machine is replaced.

According to the hydrogen supply system according to the embodiment, since the hydrogen supply method is a cassette type, the hydrogen supply base 7 can be moved, which is advantageous in terms of cost. Further, since the hydrogen supply method is a cassette type, the work of filling the hydrogen supply unit 20 with hydrogen gas and the work of replacing the hydrogen supply unit 20 loaded on the mine dump truck 10 can be performed separately. can. Therefore, in the cassette type, the mining dump truck 10 only needs to be stopped during the replacement work of the hydrogen supply unit 20 loaded on the mining dump truck 10, and the decrease in the operating rate can be suppressed. Further, since the time required for the replacement work of the hydrogen supply unit 20 loaded on the mine dump truck 10 is short, if the replacement timing of the hydrogen supply unit 20 can be increased, the amount of hydrogen gas filled in the hydrogen supply unit 20 can be increased. Can be reduced. Therefore, by doing so, the equipment cost can be reduced, and the weight of the hydrogen supply unit 20 can be reduced, so that the fuel consumption of the mining dump truck 10 on which the hydrogen supply unit 20 is loaded can be improved.

Further, in the hydrogen supply system according to the embodiment, the liner of the fuel filling container 21 has a cylindrical portion 21a and is made of an aluminum alloy or plastic, and CFRP is wound around at least the outer periphery of the cylindrical portion 21a. Has been done.

According to the hydrogen supply system according to the embodiment, the liner of the fuel filling container 21 has a cylindrical portion 21a having a cylindrical shape and is made of an aluminum alloy or plastic, and CFRP is wound around at least the outer periphery of the cylindrical portion 21a. Has been done. Therefore, the fuel filling container 21 can be made lighter than a conventional steel container filled with fuel gas while ensuring the required strength. Further, since the hydrogen supply unit 20 can be reduced in weight, the weight of the hydrogen supply unit 20 can be reduced, so that the fuel consumption of the mining machine on which the hydrogen supply unit 20 is loaded can be improved.

Further, in the hydrogen supply system according to the embodiment, the mining machine has a loading unit 17 at the front portion.

According to the hydrogen supply system according to the embodiment, a loading unit 17 on which the hydrogen supply unit 20 is loaded is provided at the front portion of the mining machine. Therefore, when the mining machine is a dump truck 10 for mining, it is possible to prevent it from getting in the way when unloading the cargo from the loading platform 13, and also to prevent it from getting in the way when passing by another vehicle. Therefore, when the load is loaded on the loading platform 13, the influence of the drop of the load can be reduced.

Further, in the hydrogen supply system according to the embodiment, the mining machine can load the hydrogen supply unit 20 into the loading unit 17 and unload it from the loading unit 17 by sliding the hydrogen supply unit 20 in the horizontal direction.

According to the hydrogen supply system according to the embodiment, the mining machine can load the hydrogen supply unit 20 into the loading unit 17 and unload it from the loading unit 17 by sliding the hydrogen supply unit 20 in the horizontal direction. Therefore, it is possible to prevent the hydrogen supply unit 20 from falling to the ground or the like when the hydrogen supply unit 20 is loaded on the loading unit 17 and when the hydrogen supply unit 20 is unloaded from the loading unit 17.

Further, the hydrogen supply system according to the embodiment includes a central control room 1 that communicates with the mining machine, and the central control room 1 includes first data on the time transition of hydrogen consumption of the mining machine and the mining machine. After receiving the second data regarding the operating status and determining the replacement timing of the hydrogen supply unit 20 using the first data and the second data, a control signal including information on the replacement timing of the hydrogen supply unit 20 is transmitted to the mining machine. .. Further, when the mining machine receives the above control signal, it heads to the hydrogen supply base 7 in time for the exchange timing.

According to the hydrogen supply system according to the embodiment, the mine dump truck 10 can head to the hydrogen supply base 7 at the optimum timing, and the hydrogen supply unit 20 of the mine dump truck 10 is replaced at the optimum timing. Can be done. Therefore, hydrogen gas can be smoothly supplied to the mining machine.

1 Central control room, 2 Loading area, 3 Draining area, 4 Running path, 5 Hydraulic excavator, 6 GPS satellite, 7 Hydrogen supply base, 8 base, 8a rail, 10 Mining dump truck, 11 Body frame, 12 wheels , 13 loading platform, 14 front wheels, 15 rear wheels, 17 loading section, 17a rail, 18 drive source, 19 pulley, 20 hydrogen supply unit, 21 fuel filling container, 21a cylindrical section, 21b dome section, 21c fuel gas supply valve, 22 Cassette, 23 wheels, 24 hooks, 30 solar power generation system, 31 hydrogen production facility, 32 ISO tank container, 33 compressor, 40 rope, 421 collective piping, 422 end, 423 end, 424 connection piping, 425 fuel side Piping, 426 Drive side piping, 427 pressure reducing valve, 428 first on-off valve, 429 second on-off valve, 430 pressure gauge, 431 safety valve, 432 extension hose.

Claims

Multiple mining machines that used hydrogen as the fuel for the drive source,
It is provided with a hydrogen supply base that is formed between the work places of the mine and is provided at a position that is a common point of the travel path of each of the mining machines in the travel path on which the mining machine travels, and supplies hydrogen to the mining machine. Hydrogen supply system.
The mining machine
For mines having a vehicle body frame, wheels rotatably provided on the vehicle body frame, the drive source that drives the wheels using hydrogen as fuel, and a loading platform that is tiltably attached to the vehicle body frame and loaded with cargo. It ’s a dump truck,
The hydrogen supply base is
In the mine, it is provided in the traveling path formed between the loading yard where the load is loaded on the loading platform and the unloading yard where the load loaded at the loading yard is unloaded. The hydrogen supply system according to claim 1.
The mine is provided with a plurality of loading sites and a plurality of dumping sites, respectively.
The hydrogen supply base is
The hydrogen supply system according to claim 2, which is provided in the traveling path between the confluence points of the plurality of loading sites and the confluence points of the plurality of lumber yard.
The mining machine has a loading unit on which a plurality of fuel filling containers filled with hydrogen are mounted and a hydrogen supply unit for supplying hydrogen to the drive source is loaded.
The hydrogen supply system according to any one of claims 1 to 3, wherein the hydrogen supply unit loaded on the loading unit of the mining machine is replaced at the hydrogen supply base.
The hydrogen supply system according to claim 4, wherein the mining machine has the loading portion in the front portion.
The mining machine
The hydrogen supply system according to claim 5, wherein the hydrogen supply unit can be loaded onto the loading section and unloaded from the loading section by sliding the hydrogen supply unit in the horizontal direction.
The invention according to any one of claims 4 to 6, wherein the fuel filling container has a cylindrical portion having a cylindrical shape, is made of an aluminum alloy or plastic, and CFRP is wound around at least the outer periphery of the cylindrical portion. Hydrogen supply system.
It is equipped with a central control room that communicates with the mining machinery.
The central control room is
The first data regarding the time transition of the hydrogen consumption of the mining machine and the second data regarding the operating status of the mining machine are received, and the replacement timing of the hydrogen supply unit is determined using the first data and the second data. The hydrogen supply system according to any one of claims 4 to 7, wherein once determined, a control signal including information on the replacement timing of the hydrogen supply unit is transmitted to the mining machine.
The mining machine
The hydrogen supply system according to claim 8, which receives the control signal and heads to the hydrogen supply base in time for the exchange timing.