Bidirectional hydrogen refueling station in expressway service area

Abstract

The utility model discloses a bidirectional hydrogen refueling station in an expressway service area, which is characterized in that a complete hydrogen refueling station is established on one side of the expressway service area, only a hydrogen refueling machine and a hydrogen refueling machine cooling-water machine are installed on the other side of the expressway service area, and charging information of the hydrogen refueling machine is transmitted to a charging background of the opposite hydrogen refueling station through an optical fiber. Instrument signals of the hydrogen refueling machine and the water chiller are transmitted to a station control computer of an opposite hydrogen refueling station through optical fibers, an optical fiber power supply box is added between service areas, and stability of signal transmission is guaranteed. The hydrogen refueling station is established on one side of the high-speed service area, and only the hydrogen refueling machine and the hydrogen refueling machine cooling-water machine need to be matched on the other side, so that the stability of charging signals and control signals is ensured, the service areas on the two sides can perform hydrogen refueling on vehicles at the same time, the station establishment period is shortened, and the cost is reduced. By optimizing the communication control method, the stability of charging data and instrument data transmission on the other side is improved, unnecessary connecting cables are reduced, the wiring complexity and the maintenance cost of the system are reduced, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of highway hydrogen refueling station construction, and more specifically, to a two-way hydrogen refueling station in a highway service area. Background Art

[0002] With the widespread application of hydrogen energy, the demand for hydrogen refueling services in highway service areas is also increasing. Customers have more stringent requirements on the time for building hydrogen refueling stations. However, if hydrogen refueling stations are built in two-way service areas at the same time, the construction time will be too long and the cost will be too high. Therefore, in order to meet market demand, it is urgent to establish a low-cost, high-efficiency two-way hydrogen refueling station.

[0003] Existing technology primarily relies on the traditional hydrogen refueling station construction method, whereby a hydrogen refueling station is established in both directions of a highway service area. Each station has its own independent control and charging systems, as well as hydrogen production and refueling systems. This approach is relatively conventional, but the construction process is time-consuming due to civil engineering, equipment installation, and commissioning. It can also affect other businesses within the service area, harming customer interests, and the subsequent maintenance and upkeep costs are extremely high.

[0004] The main issues include: long construction cycles: From start to finish, a hydrogen refueling station takes at least two months, which can impact the normal operation of other businesses; high costs: deploying two hydrogen refueling stations in both directions would double the cost, including civil construction, equipment procurement, installation and commissioning, and ongoing operations and maintenance. Utility Model Content

[0005] One purpose of this utility model is to provide a bidirectional hydrogen refueling station in a highway service area. By establishing a hydrogen refueling station on one side of the highway service area, only a hydrogen refueling machine and a hydrogen refueling chiller are required on the other side. This ensures the stability of the toll collection and control signals, enabling vehicles on both sides to refuel simultaneously, reducing the station construction cycle and costs. By optimizing the communication control method, the stability of the transmission of toll collection data and instrument data on the other side is increased, unnecessary connection cables are reduced, the wiring complexity and maintenance costs of the system are reduced, and safety is improved.

[0006] In order to solve the above technical problems, the present invention provides a two-way hydrogen refueling station in a highway service area, comprising a local hydrogen refueling station and a remote hydrogen refueling station respectively located on both sides of the service area, the local hydrogen refueling station comprising a hydrogen production system, a local hydrogen refueling system, a control system and a charging system, the local hydrogen refueling system comprising a local hydrogen refueling machine, which is used to refuel user vehicles with hydrogen, the hydrogen production system comprising a hydrogen storage bottle group, which is connected to the local hydrogen refueling machine through a hydrogen pipeline, the charging system being connected to the local hydrogen refueling machine through a cable and being used to control the charging of the local hydrogen refueling machine, the control system being connected to the local hydrogen refueling machine and the hydrogen storage bottle group through a cable, and being used to control the hydrogen storage bottle group to provide hydrogen to the local hydrogen refueling machine The corresponding hydrogen and control of the hydrogen refueling of the hydrogen refueling machine on this side, the hydrogen refueling station on this side is also provided with a fiber optic receiver, which is connected to the control system and the charging system respectively through cables; the remote hydrogen refueling station includes a remote hydrogen refueling system and a fiber optic transmitter, and the remote hydrogen refueling system includes a remote hydrogen refueling machine, which is connected to the hydrogen storage bottle group of the hydrogen refueling station on this side through a hydrogen pipeline to realize gas supply, and the remote hydrogen refueling machine is connected to the fiber optic transmitter through a cable, and the fiber optic transmitter and the fiber optic receiver are connected through an optical fiber, so that the control system is also used to control the hydrogen storage bottle group to provide corresponding hydrogen to the remote hydrogen refueling machine and control the hydrogen refueling of the remote hydrogen refueling machine, and the charging system is also used to control the charging of the remote hydrogen refueling machine.

[0007] Preferably, a power supply box is further provided between the optical fiber transmitter and the optical fiber receiver, which is connected to the optical fiber transmitter and the optical fiber receiver respectively through optical fibers for power supply.

[0008] Preferably, the remote hydrogenation station further includes a chiller, which is used to reduce the flow rate of hydrogen in the hydrogenation pipeline in the remote hydrogenation machine, and the chiller is connected to the optical fiber transmitter via a cable, and then connected to the control system of the hydrogenation station on this side via optical fiber; the hydrogenation station on this side also includes a chiller, which is also used to reduce the flow rate of hydrogen in the hydrogenation pipeline in the hydrogenation machine, and the chiller is connected to the control system of the hydrogenation station on this side via a cable.

[0009] Preferably, the hydrogen production system also includes a compressor, whose inlet is connected to an external hydrogen source, and the outlet of the compressor is connected to a hydrogen storage bottle group. The compressor is used to compress the hydrogen to a set pressure value. The compressor is also connected to a control system via a cable and the operation of the compressor is controlled by the control system.

[0010] Preferably, the compressor is provided with a corresponding water chiller for cooling the operating temperature of the compressor, and the water chiller is also connected to the control system via a cable.

[0011] The utility model has at least the following beneficial effects:

[0012] 1. This application proposes the construction of a hydrogen refueling station at a highway service area. If hydrogen refueling stations are required on both sides of the service area, a complete hydrogen refueling station will be deployed on only one side. A hydrogen refueling machine and accompanying chiller will be installed on the other side, enabling remote hydrogen refueling through fiber optic transmission and other communication methods. Compared to traditional dual-side station construction, this reduces construction and equipment investment costs, is faster to build, and has minimal impact on surrounding businesses.

[0013] 2. The layout and construction structure of this application can, on the one hand, reduce the station construction period: as long as the hydrogen refueling station is built on one side, the other side does not need to be equipped with all the equipment, so the purpose of hydrogen refueling can be achieved on both sides, greatly reducing the station construction period; on the other hand, it can reduce costs: reduce the station construction cost and the subsequent operation and maintenance cost.

[0014] 3. With the development of hydrogen energy, the demand for hydrogen refueling stations or combined hydrogen refueling stations will become increasingly higher, especially on highways. The structure of this application can be used to build hydrogen refueling stations in a more efficient and economical way.

[0015] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the prior art corresponding to the present utility model;

[0017] Figure 2 It is a structural diagram of the present utility model. DETAILED DESCRIPTION

[0018] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below with reference to the accompanying drawings so that those skilled in the art can implement it according to the description.

[0019] It should be noted that, in the description of the present invention, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] like Figure 1As shown, this is the conventional method of establishing a hydrogen refueling station mentioned in the background technology. A hydrogen refueling station is established in both directions of a long-distance highway service area. Each hydrogen refueling station has an independent control system (built into the station control computer) and a charging system (built into the charging computer), as well as a hydrogen production system (including a compressor, a compressor chiller, and a hydrogen storage bottle group) and a hydrogen refueling system (including a hydrogen refueling machine and a hydrogen refueling machine chiller).

[0021] 1. Hydrogen source: Hydrogen usually comes from a fixed gas source or a hydrogen storage tank. The fixed gas source may be directly supplied through an external pipeline or introduced from other hydrogen refueling stations.

[0022] 2. Compressor: Compresses low-pressure hydrogen to the required high pressure (e.g., 22 MPa) or other pressure values ​​set according to demand. Low-pressure hydrogen enters the compressor from the gas source, and the screw mechanism inside the compressor increases the hydrogen pressure for subsequent storage.

[0023] 3. Compressor Chiller: This cools the compressor's operating temperature to prevent damage due to excessive temperatures during the gas compression process. Through the cold water circulation system, the chiller removes heat from the compressor, ensuring normal operation of the equipment.

[0024] 4. Hydrogen storage bottle group: stores high-pressure hydrogen compressed by the compressor. There are multiple hydrogen storage bottles in the hydrogen storage bottle group, and each hydrogen bottle stores hydrogen at a different pressure. Hydrogen is added to the hydrogen storage bottle group from the compressor outlet through a control valve. Then, based on the hydrogen pressure required by the vehicle, the system selects the appropriate hydrogen storage bottle group for filling. The compressor outlet is connected to corresponding hydrogen storage bottles of different pressures through multiple hydrogen pipelines, and each hydrogen pipeline is equipped with a control valve, and each control valve is controlled by the control system. Hydrogen storage bottles of different pressures are also connected to the hydrogen filling machine through different hydrogen pipelines, and each hydrogen pipeline is also equipped with a control valve, and each control valve is controlled by the control system. The compressor prepares hydrogen of various pressures and monitors it through the control system, and then stores it in the hydrogen storage bottles of the corresponding pressures through the hydrogen pipelines of the corresponding pressures. When hydrogenation is required, the control system controls the hydrogen pipeline of the corresponding pressure to be connected for hydrogenation according to the selected hydrogenation pressure received from the hydrogenation machine. According to the set hydrogenation amount, when the corresponding design value is reached, the corresponding control valve is controlled to close and hydrogenation is stopped.

[0025] 5. Hydrogen Refueling Station: This station provides hydrogen refueling services for user vehicles. The hydrogen refueling station fills the user's vehicle with high-pressure hydrogen at an appropriate flow rate. During the refueling process, the station's hydrogen refueling station is connected to the local charging computer via a cable to complete billing operations. The station's hydrogen refueling station is also connected to the station control computer via a cable to complete the refueling process.

[0026] 6. Hydrogenation machine chiller: Reduces the heat generated by gas decompression during the hydrogenation process. Since hydrogen generates heat when it is released from a high-pressure state, the pipeline needs to limit the flow rate. Therefore, the chiller is used to reduce the flow rate of hydrogen in the hydrogenation pipeline.

[0027] 7. Station Control Computer: This contains a control system connected via cables to the compressor, hydrogen storage tanks, hydrogen refueling machine, and corresponding chillers. It controls the operation and connectivity of each device. The control system, a PLC with built-in WPL Soft software, controls the compressor to compress hydrogen to a set pressure and simultaneously opens the control valves on the hydrogen pipeline at the corresponding pressure to store the hydrogen in the hydrogen storage tanks at the corresponding pressure. The control system also controls the hydrogen refueling pressure and its opening and closing. It also controls the operation of each chiller and data display.

[0028] 8. Charging computer: It is equipped with a charging system and built-in CX-Programmer V9.5 software. It is connected to the hydrogen filling machine via a cable and is used to control the charging of the hydrogen filling machine. For example, the charging unit price is input, and the total charging amount is automatically calculated and displayed based on the hydrogen filling volume.

[0029] like Figure 2 As shown, a complete hydrogen refueling station is built on one side of the highway service area, the left side, known as the local hydrogen refueling station. On the other side, the right side, only the hydrogen refueling station and its chiller are installed, known as the remote hydrogen refueling station. The local hydrogen refueling station remains unchanged, but toll information from the remote hydrogen refueling station is transmitted via optical fiber to the toll collection system of the local hydrogen refueling station's toll collection computer. The hydrogen refueling station's control is also transmitted via optical fiber to the control system of the local hydrogen refueling station's station control computer. Instrument signals from the hydrogen refueling chiller are also transmitted via optical fiber to the station control computer of the local hydrogen refueling station. An optical fiber power supply box is added between the two service areas to ensure stable signal transmission. The remote hydrogen refueling station and its chiller function identically to those of the local hydrogen refueling station. Since the remote station lacks a compressor and hydrogen storage tanks, hydrogen is sourced from the local hydrogen storage tanks. The remote hydrogen refueling station's hydrogen is supplied via pre-buried hydrogen pipelines connected to the local hydrogen storage tanks for refueling user vehicles. Multiple hydrogen pipelines are provided for different pressures.

[0030] A fiber optic transmitter was added to the PLC charging port on the remote hydrogenation station's local controller to transmit charging information. A fiber optic transmitter was also added to the 485 communication port on the local controller of the hydrogenation station's chiller to transmit instrument information. A fiber optic power supply box was added between the two service areas to ensure stable signal transmission. Fiber optic receivers were added to the charging computer and station control computer at the local hydrogenation station. The fiber optic signals from the hydrogenation station and the hydrogenation station chiller were connected to the inlet of the power supply box; the outlet of the power supply box was connected to the fiber optic receivers of the hydrogenation station's charging computer and station control computer, respectively.

[0031] Hydrogen transmission and signal transmission:

[0032] 1. Hydrogen pipeline: This allows hydrogen to be transmitted within local equipment, or transported from local hydrogen storage tanks to remote hydrogen stations via long-distance pipelines. Safety valves, sensors, and other equipment can be installed at the connection points of the hydrogen pipeline to monitor hydrogen flow, pressure, and temperature, ensuring the safety and stability of the transmission process. This is monitored and controlled by the control system.

[0033] 2. Signal transmission: Control and data transmission between the two sites are achieved through optical fiber.

[0034] Long-distance signal transmission: Signals are transmitted through fiber optic receivers and transmitters. Fiber optics are resistant to interference and suitable for long-distance, stable signal transmission, ensuring real-time communication between remote devices and local systems.

[0035] In-station signal transmission: Signal transmission in this station is achieved by connecting various devices such as hydrogen filling machines, charging computers, control computers, etc. through cables to ensure smooth and accurate information, including the connection between each device and optical fiber transmitters and receivers.

[0036] The overall workflow of the system:

[0037] 1. Hydrogen enters the compressor from the gas source, is compressed, and then stored in the hydrogen storage cylinder group. The system adjusts the selection of different hydrogen storage cylinder groups according to user needs through the control valve.

[0038] 2. When users refuel their vehicles with hydrogen through a hydrogen refueling machine, heat is generated during the decompression of hydrogen. Therefore, a chiller is used to limit the hydrogen flow rate to ensure the safety and efficiency of the hydrogen refueling process.

[0039] 3. Hydrogen at the remote site is delivered via hydrogen pipelines from the local hydrogen storage tanks. Users can also perform hydrogen refueling operations at the remote site. Signals are transmitted via optical fiber, ensuring real-time data exchange and control between the remote site and the system on the left.

[0040] The system equipment on this side includes compressors, hydrogen storage bottle groups, hydrogen refueling machines, etc., which are responsible for the compression, storage and refueling of hydrogen.

[0041] Remote equipment mainly includes hydrogen refueling machines and hydrogen refueling chillers, and hydrogen is transported from this side via pipelines. Long-distance transmission of signals and hydrogen is carried out via optical fibers and hydrogen pipelines.

[0042] It is understood that the present invention is described through some embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and implementation methods. They can be applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A bidirectional hydrogen refueling station in a highway service area, characterized in that: It includes a local hydrogenation station and a remote hydrogenation station located on both sides of the service area respectively. The local hydrogenation station includes a hydrogen production system, a local hydrogenation system, a control system and a charging system. The local hydrogenation system includes a local hydrogenation machine, which is used to hydrogenate user vehicles. The hydrogen production system includes a hydrogen storage bottle group, which is connected to the local hydrogenation machine through a hydrogen pipeline. The charging system is connected to the local hydrogenation machine through a cable and is used to control the charging of the local hydrogenation machine. The control system is connected to the local hydrogenation machine and the hydrogen storage bottle group through a cable, and is used to control the hydrogen storage bottle group to provide corresponding hydrogen to the local hydrogenation machine and control the hydrogenation of the local hydrogenation machine. The hydrogen refueling station on this side is also provided with a fiber optic receiver, which is connected to the control system and the charging system respectively through cables; the remote hydrogen refueling station includes a remote hydrogen refueling system and a fiber optic transmitter, and the remote hydrogen refueling system includes a remote hydrogen refueling machine, which is connected to the hydrogen storage bottle group of the hydrogen refueling station on this side through a hydrogen pipeline to realize gas supply, and the remote hydrogen refueling machine is connected to the fiber optic transmitter through a cable, and the fiber optic transmitter and the fiber optic receiver are connected through an optical fiber, so that the control system is also used to control the hydrogen storage bottle group to provide corresponding hydrogen to the remote hydrogen refueling machine and control the hydrogenation of the remote hydrogen refueling machine, and the charging system is also used to control the charging of the remote hydrogen refueling machine.

2. The highway service area bidirectional hydrogen refueling station according to claim 1, characterized in that: A power supply box is further provided between the optical fiber transmitter and the optical fiber receiver, which is connected to the optical fiber transmitter and the optical fiber receiver respectively through optical fibers for power supply.

3. The highway service area bidirectional hydrogen refueling station according to claim 1, characterized in that: The remote hydrogenation station also includes a chiller, which is used to reduce the flow rate of hydrogen in the hydrogenation pipeline in the remote hydrogenation machine. The chiller is connected to the optical fiber transmitter via a cable, and then connected to the control system of the hydrogenation station on this side via optical fiber; the hydrogenation station on this side also includes a chiller, which is also used to reduce the flow rate of hydrogen in the hydrogenation pipeline in the hydrogenation machine. The chiller is connected to the control system of the hydrogenation station on this side via a cable.

4. The highway service area bidirectional hydrogen refueling station according to claim 1, characterized in that: The hydrogen production system also includes a compressor, whose inlet is connected to an external hydrogen source, and the outlet of the compressor is connected to a hydrogen storage bottle group. The compressor is used to compress the hydrogen to a set pressure value. The compressor is also connected to a control system via a cable and the operation of the compressor is controlled by the control system.

5. The highway service area bidirectional hydrogen refueling station according to claim 4, characterized in that: The compressor is provided with a corresponding water chiller, which is used to cool the operating temperature of the compressor. The water chiller is also connected to the control system via a cable.

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