Movable hydrogen refueling station

Abstract

The utility model provides a movable hydrogen refueling station, and relates to the field of hydrogen refueling equipment. The movable hydrogen refueling station comprises a container which comprises a box body and a top cover, and the top cover is detachably connected to the top of the box body so that an explosion venting opening can be formed in the top of the box body. The gas discharging chamber is provided with a gas discharging pipeline, and the gas inlet end of the gas discharging pipeline is used for being communicated with a hydrogen vehicle. The compression system comprises a compressor and a hydraulic station, the compressor is connected with the hydraulic station through a hydraulic pipeline, and the air inlet end of the compressor communicates with the air outlet end of the air discharging pipeline. The cooling-water machine is at least connected with the compression system through a cooling pipeline. And the gas inlet end of the hydrogenation machine is communicated with the gas outlet end of the compressor. The gas unloading chamber, the compression system, the cooling-water machine and the hydrogenation machine are all integrated in the container, and the cooling-water machine is arranged between the compression system and the hydrogenation machine. According to the movable hydrogen refueling station, through integrated design, rapid deployment, low-cost construction and high-safety operation are achieved, and the flexibility and economical efficiency of the movable hydrogen refueling station are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of hydrogen refueling equipment, and more particularly to a mobile hydrogen refueling station. Background Technology

[0002] With the increasing global demand for clean energy, hydrogen energy, with its advantages of zero emissions and high energy density, is gradually becoming an important driving force for energy transformation.

[0003] As an indispensable part of the hydrogen energy industry chain, the construction of hydrogen refueling stations is developing rapidly. Hydrogen refueling stations can be divided into stationary stations and mobile stations. Stationary stations have large storage and refueling capacities, but face challenges such as high construction costs, long construction cycles, large land requirements, and insufficient flexibility, limiting their ability to quickly respond to market demands and achieve widespread deployment. Mobile stations, on the other hand, offer advantages such as flexible deployment, lower construction costs, and smaller land area, making them a flexible solution for the development of hydrogen energy infrastructure.

[0004] However, currently used mobile hydrogen refueling stations generally suffer from problems in practical applications, such as complex deployment processes, non-compliance with safety distance standards, and lack of explosion vent design. Utility Model Content

[0005] In view of the above problems, this application provides a mobile hydrogen refueling station. Through integrated design, the mobile hydrogen refueling station achieves rapid deployment, low-cost construction, and highly safe operation, significantly improving the flexibility and economy of hydrogen refueling stations.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] This application provides a mobile hydrogen refueling station, including: a container, comprising a container body and a top cover, the top cover being detachably connected to the top of the container body to form an explosion vent at the top of the container body.

[0008] The unloading chamber is equipped with an unloading pipeline, the inlet of which is used to connect to the hydrogen vehicle.

[0009] The compression system includes a compressor and a hydraulic station. The compressor and the hydraulic station are connected by a hydraulic pipeline, and the inlet end of the compressor is connected to the outlet end of the unloading pipeline.

[0010] The chiller is connected to the compression system via cooling pipes.

[0011] The hydrogen dispenser has its inlet connected to the outlet of the compressor.

[0012] The unloading chamber, compression system, chiller, and hydrogen refueling unit are all integrated inside the container, with the chiller located between the compression system and the hydrogen refueling unit.

[0013] In one possible implementation, the compressor includes at least one compression section, which includes a pneumatic chamber and a hydraulic chamber separated by a piston plate. The pneumatic chamber is connected to an unloading pipeline, and the hydraulic chamber is connected to a hydraulic station via a hydraulic pipeline.

[0014] In one possible implementation, the gas pressure chamber includes a primary chamber and a secondary chamber. The inlet of the primary chamber is connected to the outlet of the unloading pipeline. The outlet of the primary chamber and the inlet of the secondary chamber are connected by a pipeline. The outlet of the secondary chamber is connected to the inlet of the hydrogen dispenser.

[0015] In one possible implementation, compression sections are provided on both axial sides of the compressor.

[0016] In one possible implementation, the compression system further includes at least one heat exchanger connected to a cooling pipeline, the heat exchanger being used to exchange the heat generated by the compression system to a chiller.

[0017] In one possible implementation, at least one heat exchanger includes:

[0018] The compressor heat exchanger is installed on the compressor's gas pipeline.

[0019] The heat exchanger of the hydraulic station is installed on the hydraulic pipeline of the hydraulic station.

[0020] In one possible implementation, it also includes a control room integrated within the container.

[0021] In one possible implementation, the unloading chamber, compressor, hydraulic station, chiller, hydrogen refueling machine, and control room are all separated by partitions.

[0022] In one possible implementation, it also includes:

[0023] The venting tower is detachably connected to the top cover; the hydrogen refueling machine, compressor and unloading chamber are all equipped with venting pipelines that communicate with the venting tower.

[0024] In one possible implementation, it further includes: a nitrogen cylinder assembly, located inside the container or detachably connected to the outside of the container, and connected to the unloading pipeline via a purging pipeline.

[0025] The mobile hydrogen refueling station provided in this application includes a container and an integrated unloading chamber, compression system, chiller, and hydrogen refueling machine. The container comprises a body and a top cover, with the top cover detachably connected to the top of the body. This allows the connection between the top cover and the body to break or loosen when the pressure inside the container reaches a set limit, creating a vent at the top of the body. This effectively mitigates the damage of the explosion shockwave to surrounding structures and the environment. The unloading chamber is equipped with an unloading pipeline, the inlet of which connects to a hydrogen vehicle, safely introducing hydrogen from the vehicle into the mobile hydrogen refueling station. The compression system includes a compressor responsible for pressurizing the hydrogen, with its inlet connected to the outlet of the unloading pipeline. Additionally, the compression system includes a hydraulic station connected to the compressor via a hydraulic pipeline, providing the necessary power and pressure control to the compressor. The hydrogen refueling machine's inlet is connected to the compressor's outlet, responsible for delivering high-pressure hydrogen to the hydrogen storage tank of the hydrogen fuel cell vehicle. The chiller is connected to cooling pipes, which are at least connected to the compression system, allowing the supply of cooling medium to the compression system. Furthermore, the chiller is positioned between the compression system and the hydrogen refueling unit, ensuring safe operating distances while improving space utilization efficiency and overall safety. Therefore, the mobile hydrogen refueling station provided in this application integrates unloading, compression, cooling, and hydrogen refueling functions. This integrated design effectively saves space and improves mobility and flexibility. Simultaneously, the optimized layout of the mobile hydrogen refueling station improves safe operating distances and space utilization, effectively mitigating potential explosive impacts and enabling rapid deployment and efficient hydrogen replenishment. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a mobile hydrogen refueling station provided in an embodiment of this application;

[0028] Figure 2 A process flow diagram of a mobile hydrogen refueling station provided in an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10 - Mobile hydrogen refueling station;

[0031] 100 - Container; 200 - Unloading chamber; 300 - Compression system; 400 - Chiller; 500 - Hydrogen dispenser; 600 - Control room; 700 - Vent tower; 800 - Nitrogen cylinder group;

[0032] 110-Box body; 120-Top cover; 210-Unloading pipeline; 220-Ball valve; 230-Remote control valve; 240-Check valve; 250-Safety valve; 260-Pressure transmitter; 270-Flow detection element; 280-Filter; 290-Connector; 310-Compressor; 320-Hydraulic station; 330-Hydraulic pipeline; 340-Heat exchanger; 350-Pressure transmitter; 360-Temperature transmitter; 370-Filter; 610-Hydrogen detector; 620-Flame detector; 630-Explosion-proof camera; 810-Purge pipeline; 820-On / off valve; 830-Filter; 840-Pressure reducing valve; 850-Pressure gauge; 860-Safety valve;

[0033] 311 - Compression section; 341 - Compressor heat exchanger; 342 - Front-end heat exchanger; 343 - Hydraulic station heat exchanger; 261 - Pressure gauge;

[0034] 3111 - Pneumatic chamber; 3112 - Hydraulic chamber; 3411 - First heat exchanger; 3412 - Second heat exchanger;

[0035] a - Primary chamber; b - Secondary chamber; c - Connecting conduit;

[0036] 20 - Hydrogen vehicle; 21 - High-pressure hose; 22 - Breakaway valve. Detailed Implementation

[0037] As described in the background section, hydrogen energy is gradually becoming a clean energy option in multiple fields such as fuel cell vehicles, industrial applications, and power and heat supply due to its abundant sources, energy storage capabilities, diverse application scenarios, zero carbon emissions, and zero pollution.

[0038] Hydrogen refueling stations are a core support for the application of hydrogen energy, providing infrastructure for hydrogen refueling services for vehicles such as hydrogen-powered cars and railway locomotives. Hydrogen refueling stations can pressurize hydrogen from different sources and store it in high-pressure tanks within the station, then use hydrogen refueling machines to refuel hydrogen fuel cell vehicles.

[0039] Currently, hydrogen refueling stations can be mainly divided into stationary hydrogen refueling stations and mobile hydrogen refueling stations. Stationary hydrogen refueling stations have large storage and refueling capacities, which can meet large-scale hydrogen supply demands. However, the construction of stationary hydrogen refueling stations faces a series of challenges, including high construction costs, long construction cycles, large land occupation, and low flexibility. These factors limit their ability to quickly respond to market demands and be widely deployed.

[0040] Mobile hydrogen refueling stations are flexible in deployment, have low construction costs, and require little space, enabling them to respond quickly to market changes and provide immediate hydrogen refueling services. Furthermore, mobile hydrogen refueling stations can play an important role in emergencies and temporary events. For example, they can be used to provide energy replenishment for emergency vehicles during natural disasters.

[0041] However, the actual deployment of mobile hydrogen refueling stations faces several challenges, including: a relatively complex deployment process; the need to install chillers outside the refueling station after deployment, increasing complexity and time costs; and safety clearances often failing to meet the requirements of national standard GB50516, increasing safety hazards. Furthermore, the lack of explosion vents may limit response capabilities in emergency situations.

[0042] In view of this, this application provides a mobile hydrogen refueling station, including a container and an unloading chamber, a compression system, a chiller, and a hydrogen refueling machine integrated within the container. The container includes a body and a top cover, wherein the top cover is detachably connected to the top of the body. Thus, when the pressure inside the container reaches a set limit, the connection between the top cover and the body can break or loosen to form a vent at the top of the body, thereby effectively mitigating the damage of the explosion shock wave to the surrounding structure and environment. The unloading chamber is equipped with an unloading pipeline, the inlet of which is connected to a hydrogen vehicle, allowing hydrogen to be safely introduced from the vehicle into the mobile hydrogen refueling station. The compression system includes a compressor responsible for pressurizing the hydrogen, its inlet connected to the outlet of the unloading pipeline. Additionally, the compression system includes a hydraulic station connected to the compressor via a hydraulic pipeline, providing the necessary power and pressure control to the compressor. The inlet of the hydrogen refueling machine is connected to the outlet of the compressor, responsible for delivering high-pressure hydrogen to the hydrogen storage tank of the hydrogen fuel cell vehicle. The chiller is connected to cooling pipes, which are at least connected to the compression system, allowing the supply of cooling medium to the compression system. Furthermore, the chiller is positioned between the compression system and the hydrogen refueling unit, ensuring safe operating distances while improving space utilization efficiency and overall safety. Therefore, the mobile hydrogen refueling station provided in this application integrates unloading, compression, cooling, and hydrogen refueling functions. This integrated design effectively saves space and improves mobility and flexibility. Simultaneously, the optimized layout of the mobile hydrogen refueling station improves safe operating distances and space utilization, effectively mitigating potential explosive impacts and enabling rapid deployment and efficient hydrogen replenishment.

[0043] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0044] Figure 1 This is a schematic diagram of the structure of a mobile hydrogen refueling station provided in an embodiment of this application. Wherein, Figure 1 (a) in the image is a front perspective view of the mobile hydrogen refueling station. Figure 1 (b) is a top-down perspective view of the mobile hydrogen refueling station.

[0045] Reference Figure 1 As shown in the illustration, this application provides a mobile hydrogen refueling station 10. The mobile hydrogen refueling station 10 integrates multiple functions such as unloading, compression, cooling, and hydrogen refueling into a single container, achieving high flexibility, low construction and operating costs, and strong scalability. This design enables the mobile hydrogen refueling station 10 to quickly respond to the needs of various scenarios, whether it's temporary events, remote areas, or emergencies, allowing for rapid deployment and provision of hydrogen refueling, meeting the ever-growing demand for hydrogen fuel, and promoting the widespread application of hydrogen energy.

[0046] Reference Figure 1 As shown, the mobile hydrogen refueling station 10 includes a container 100, which comprises a body 110 and a top cover 120. The top cover 120 is detachably connected to the top of the body 110. Exemplarily, the top cover 120 and the body 110 can be connected by bolts, or other connection structures can be used; this embodiment does not impose specific limitations on this. Thus, when the pressure inside the container 100 rises sharply or reaches a set limit value, the connection between the top cover 120 and the body 110 can break or loosen. This creates a vent on the top of the container 100, effectively releasing pressure, reducing the damage of the explosion shockwave to the surrounding structure and environment, and improving the emergency response capability of the mobile hydrogen refueling station 10 in the face of potential safety threats.

[0047] Continue to refer to Figure 1As shown, the container 100 integrates an unloading chamber 200, a compression system 300, a chiller 400, and a hydrogen refueling machine 500. The unloading chamber 200 receives and processes hydrogen gas transferred from outside the mobile hydrogen refueling station 10. The hydrogen is then transported to the compression system 300, which compresses the hydrogen received in the unloading chamber 200 to the required high-pressure level for storage and subsequent distribution. The chiller 400 supplies a cooling medium to the compression system 300 to cool the heat generated during compression. The compressed and cooled hydrogen gas is then transferred to the hydrogen refueling machine 500, which refuels hydrogen fuel cell vehicles. This integrated design achieves unified hydrogen refueling functionality, simplifying the refueling process, facilitating rapid deployment and flexible relocation, effectively reducing construction and operating costs, and enabling the mobile hydrogen refueling station 10 to quickly respond to hydrogen refueling needs at different locations.

[0048] In addition, continue to refer to Figure 1 As shown, the mobile hydrogen refueling station 10 also includes a control room 600, integrated within the container 100. The control room 600 houses the power supply system, control system, lighting system, hydrogen detection system, and flame detection system, ensuring the safety and stable operation of the mobile hydrogen refueling station 10. The hydrogen detection system and flame detection system are equipped with comprehensive hydrogen detectors 610 and 620 respectively, providing complete coverage of all hydrogen-related areas within the mobile hydrogen refueling station 10 and enabling rapid detection and response to hydrogen leaks.

[0049] In addition, the control system is equipped with multiple rotatable explosion-proof cameras 630, which can support remote monitoring, reducing the need for staff to enter the interior of the mobile hydrogen refueling station 10, improving the safety of staff, and providing a solid guarantee for the efficient and safe operation of the mobile hydrogen refueling station 10.

[0050] Continue to refer to Figure 1 As shown, the mobile hydrogen refueling station 10 is also equipped with a venting tower 700, which is detachably connected to the top cover 120 of the container 100. The venting tower 700 is connected to a venting pipeline, which can be connected to the hydrogen dispenser 500, the compression system 300, and the unloading chamber 200, respectively. When the pressure in the mobile hydrogen refueling station 10 exceeds a set value or when maintenance and repair are required, the venting tower 700 can be installed on the top cover 120 of the container 100. The venting tower 700 reduces the pressure inside the mobile hydrogen refueling station 10 by safely releasing hydrogen, thereby preventing potential safety accidents.

[0051] In this embodiment, the hydrogen refueling unit 500, chiller 400, unloading chamber 200, compression system 300, and control room 600 are arranged sequentially along the length of the container 100. The unloading chamber 200 is located at the front of the container 100 to facilitate the refueling of hydrogen into hydrogen fuel cell vehicles. The control room 600 is located at the other end of the hydrogen refueling station 10 to facilitate smoother hydrogen transportation within the station. Furthermore, the hydrogen refueling unit 500, chiller 400, unloading chamber 200, compression system 300, and control room 600 are all separated by robust partitions. For example, the partitions can be made of high-strength steel. This physical isolation creates an independent operating space for each component, ensuring their independence during operation and preventing potential cross-interference. It also provides clear boundaries and pathways for routine inspection and maintenance, thereby enhancing operational safety and maintenance efficiency.

[0052] It should be noted that, compared to the common practice in current hydrogen refueling stations where only a thin plate separates the hydrogen refueling machine 500 from the compression system 300, this embodiment places the chiller 400 between the compression system 300 and the hydrogen refueling machine 500. This ensures sufficient safety distance between the hydrogen refueling machine 500 and the compression system 300, complying with the fire-prevention distance requirements for facilities within a hydrogen refueling station as stipulated in the "Technical Specifications for Hydrogen Refueling Stations." Therefore, the safety performance of the mobile hydrogen refueling station 10 is significantly improved, effectively reducing potential fire and explosion risks and ensuring the safe operation of the mobile hydrogen refueling station 10.

[0053] Figure 2 A process flow diagram of a mobile hydrogen refueling station provided in an embodiment of this application. (Refer to...) Figure 2 As shown, the mobile hydrogen refueling station 10 can also be equipped with a nitrogen cylinder group 800, which can be used to purge and replace the pipelines and components inside the mobile hydrogen refueling station 10 to ensure the cleanliness and safety of the interior of the mobile hydrogen refueling station 10.

[0054] For example, the nitrogen cylinder assembly 800 can be used as an additional supply independently of the mobile hydrogen refueling station 10, and the container 100 of the mobile hydrogen refueling station 10 can be provided with an interface, through which the nitrogen cylinder assembly 800 is connected to the interface on the container via a purge line 810.

[0055] Before the hydrogen refueling station 10 is put into operation, the pipeline is usually filled with air. At this time, the nitrogen cylinder group 800 is used to purge the pipeline to remove the air and create a smooth channel for hydrogen transmission. In addition, when the pipeline needs maintenance or repair, the nitrogen cylinder group 800 can also be used to replace the hydrogen in the pipeline to ensure that the pipeline is filled with inert gas, thereby reducing potential safety risks.

[0056] The purging line 810 may be equipped with a switch valve 820, a filter 830, a pressure reducing valve 840, a pressure gauge 850, and a safety valve 860. The switch valve 820 controls the flow of nitrogen, opening or closing the purging line 810. The filter 830 filters out impurities from the nitrogen cylinder assembly 800, ensuring the purity of the nitrogen entering the line. The pressure reducing valve 840 reduces the high-pressure nitrogen in the nitrogen cylinder assembly 800 to a safe pressure level suitable for the line, preventing excessive pressure from damaging the line and components and ensuring the safety and stability of the purging process. The pressure gauge 850 monitors the nitrogen pressure in the purging line 810 in real time, providing accurate pressure readings. The safety valve 860 automatically releases excess nitrogen when the line pressure exceeds a set safety threshold, preventing overpressure and avoiding damage to equipment and lines.

[0057] Continue to refer to Figure 2 As shown, the unloading chamber 200 is equipped with an unloading pipeline 210. The inlet end of the unloading pipeline 210 is connected to the hydrogen vehicle 20, which can import hydrogen from the hydrogen vehicle 20 into the mobile hydrogen refueling station 10.

[0058] For example, the inlet end of the unloading pipeline 210 can be connected to the hydrogen vehicle 20 via a high-pressure hose 21. The high-pressure hose 21 has good flexibility and durability, is easy to operate and maintain, and can ensure the safe and stable transmission of hydrogen under high pressure. A breakaway valve 22 can be installed on the high-pressure hose 21. The breakaway valve 22 can quickly cut off the connection in an emergency, dividing the high-pressure hose 21 into two parts, and the ports of the two sections of the high-pressure hose 21 can be automatically sealed to prevent hydrogen leakage.

[0059] For example, if the operator forgets to disconnect the hydrogen truck 20 from the mobile hydrogen refueling station 10 after the hydrogen transfer is completed, or if the hydrogen truck 20 suddenly moves or is impacted, the disconnect valve 22 can promptly disconnect the pipeline connection. This effectively prevents the risk of pipeline rupture or the hydrogen truck 20 knocking over the mobile hydrogen refueling station 10, thereby avoiding hydrogen leakage and potential safety accidents.

[0060] In addition, multiple valves can be installed on the unloading pipeline 210 to effectively manage the unloading pressure and flow rate of hydrogen, ensuring the efficiency and safety of the unloading process. For example, refer to... Figure 2 As shown, a ball valve 220, a remote control valve 230, a check valve 240, and a safety valve 250 may be installed on the unloading pipeline 210.

[0061] The ball valve 220 can be used to control the opening and closing of the pipeline, cutting off the pipeline or allowing hydrogen to pass through as needed. The remote control valve 230 can be remotely controlled by a driver or electrical signal to achieve automated operation, improving system flexibility and response speed. The one-way valve 240 ensures that hydrogen can only flow from the hydrogen vehicle 20 into the mobile hydrogen refueling station 10, preventing backflow. The safety valve 250 detects the pressure in the unloading pipeline 210. When the pressure in the unloading pipeline 210 exceeds the pressure value set by the safety valve 250, the safety valve 250 will open and transport hydrogen to the venting tower 700 through the venting pipeline. The hydrogen is then safely discharged through the venting tower 700 to prevent equipment damage or safety accidents caused by excessive pressure. Of course, when the pressure value in the unloading pipeline 210 is normal, the safety valve 250 will remain closed to ensure the mobile hydrogen refueling station 10 can continue to operate stably.

[0062] In addition, a pressure transmitter 260 and a flow detection element 270 can be installed on the unloading pipeline 210. The pressure transmitter 260 can accurately monitor the pressure in the unloading pipeline 210 and convert pressure changes into electrical signals that are transmitted to the control system or display device. A pressure gauge 261 can be connected to the pressure transmitter 260 to read the pressure value in the unloading pipeline 210, ensuring that personnel can monitor the system status in real time. The flow detection element 270 can accurately monitor the quality of hydrogen, ensuring the safe operation of the system. Furthermore, a filter 280 can be installed on the unloading pipeline 210 to effectively intercept impurities and prevent them from entering the compression system 300, thereby avoiding potential damage to the compressor 310.

[0063] A connector 290 is also provided on the unloading pipeline 210. The purging pipeline 810 can be connected to the unloading pipeline 210 through the connector 290 to purge or replace the unloading pipeline 210.

[0064] Because hydrogen has a low density at room temperature and pressure, it can be compressed using a compression system 300 to increase its storage density, thus achieving more efficient storage and transportation. (Continue to refer to...) Figure 2 As shown, the compression system 300 includes a compressor 310 and a hydraulic station 320. The outlet end of the unloading pipeline 210 is connected to the inlet end of the compressor 310, allowing hydrogen to enter the compression system 300 after flowing out of the unloading chamber 200. The compressor 310 and the hydraulic station 320 are connected via a hydraulic pipeline 330. The hydraulic station 320 generates high-speed flowing hydraulic oil, which serves as a power source to drive the piston inside the compressor 310, causing it to reciprocate. During this process, the hydrogen in the compressor 310 can be effectively compressed, reducing its volume and increasing its pressure.

[0065] Specifically, the compressor 310 may be equipped with a compression section 311, which includes a pneumatic chamber 3111 and a hydraulic chamber 3112. The pneumatic chamber 3111 is connected to the unloading pipeline 210, and the hydraulic chamber 3112 is connected to the hydraulic station 320 via a hydraulic pipeline 330. The pneumatic chamber 3111 and the hydraulic chamber 3112 are separated by a piston plate. Hydrogen gas can enter the pneumatic chamber 3111 through the unloading pipeline 210. Simultaneously, the hydraulic station 320 generates high-speed flowing hydraulic oil, which enters the hydraulic chamber 3112 through the hydraulic pipeline 330 and applies pressure to the piston between the pneumatic chamber 3111 and the hydraulic chamber 3112, pushing the piston towards the pneumatic chamber 3111. As the piston moves, the volume of hydrogen gas in the pneumatic chamber 3111 decreases, and the pressure increases accordingly, thereby achieving the compression of the hydrogen gas.

[0066] Of course, when the hydrogen flow rate is large, the compressor 310 can also be equipped with multiple compression sections 311 to maintain the high efficiency and high reliability of the compressor 310 and meet the needs of large-scale hydrogen compression. For example, two compression sections 311 can be provided, with the two compression sections 311 respectively located on opposite sides of the compressor 310's axial direction. This reduces the working pressure of a single compression section 311, thereby extending the lifespan of the compressor 310 and improving its operating efficiency. Furthermore, this symmetrical layout helps balance the load on the compressor 310 during operation, enhancing the overall structural stability and symmetry.

[0067] In addition, the provision of two compression units 311 can improve the flexibility and reliability of the compressor 310. When one compression unit 311 needs maintenance or fails, the other compression unit 311 can still continue to work, thereby ensuring the continuous operation of the compressor 310, reducing downtime, and improving the working efficiency of the mobile hydrogen refueling station 10.

[0068] To further improve the storage density and transportation efficiency of hydrogen, a secondary compression of the hydrogen can be performed using a compressor 310. Specifically, the pressure chamber 3111 may include two independent primary chambers, a and b, with a connecting pipe c between the outlet of the primary chamber and the inlet of the secondary chamber b. The inlet of the primary chamber a is connected to the outlet of the unloading pipe 210. Hydrogen first enters the primary chamber a through the outlet of the unloading pipe 210 for primary compression, and the compressed gas then enters the secondary chamber b through the connecting pipe c for secondary compression.

[0069] In this way, the density of hydrogen is significantly increased through two consecutive compressions. Furthermore, by setting up a primary chamber a and a secondary chamber b, the compressor 310 can adjust its operating parameters according to the pressure requirements at different stages of compression, thereby reducing energy consumption and thermal impact, and achieving more efficient and reliable hydrogen compression.

[0070] It should be noted that a significant amount of heat is generated during the compression of hydrogen. Therefore, to cool the heat generated during compression, the compression system 300 is also equipped with a heat exchanger 340. The heat exchanger 340 is connected to a chiller 400 via cooling pipes. The chiller 400 provides coolant that circulates through the heat exchanger 340, which absorbs and removes the heat generated during compression. This effectively reduces the temperature of the compressed hydrogen, improves the overall performance of the compression system 300, reduces energy consumption, and enhances the compression efficiency and safety of hydrogen. Simultaneously, the heat exchanger 340 also helps protect the compressor 310 from damage due to excessively high temperatures, thereby ensuring the stability and reliability of the compression system 300.

[0071] The heat exchanger 340 may include a compressor heat exchanger 341, which may include a first heat exchanger 3411 and a second heat exchanger 3412. The first heat exchanger 3411 is located between the outlet of the primary chamber a and the inlet of the secondary chamber b. The first heat exchanger 3411 can rapidly reduce the temperature of the hydrogen after primary compression, minimizing the impact of heat generated during primary compression on the efficiency of secondary compression, and protecting the compressor 310 from potential damage due to excessive heat. The second heat exchanger 3412 is located at the outlet of the secondary chamber b and can further reduce the temperature of the hydrogen after secondary compression, ensuring the safe storage and transportation of subsequently compressed hydrogen.

[0072] In one possible implementation, heat exchanger 340 may also be provided with a front-end heat exchanger 342. The front-end heat exchanger may be located between the unloading pipeline 210 and the inlet end of the first-stage chamber a. The front-end heat exchanger 342 can pre-cool the hydrogen entering the first-stage chamber a, reducing the initial temperature of the hydrogen, thereby reducing the thermal effect during the first-stage compression process, which is beneficial to reducing the energy consumption generated during the first-stage compression process and improving the first-stage compression efficiency.

[0073] Of course, heat exchanger 340 may also include hydraulic station heat exchanger 343. Hydraulic station heat exchanger 343 is installed on hydraulic line 330 and is used to cool the hydraulic oil entering compressor 310. Cooled hydraulic oil has better viscosity characteristics, which makes the piston movement of compressor 310 smoother and more precise, helping to improve the efficiency and response speed of compressor 310. In addition, by reducing the temperature of the hydraulic oil, wear and aging of compressor 310 caused by high-temperature hydraulic oil can be reduced, thereby extending the service life of compressor 310.

[0074] The compression system 300 may also be equipped with a pressure transmitter 350, a temperature transmitter 360, and a filter 370 to achieve real-time monitoring of pressure and temperature and filtration of impurities.

[0075] Continue to refer to Figure 2 As shown, the hydrogen gas, after being compressed in two stages, flows out from the second stage chamber b and is cooled by the second heat exchanger 3412 before flowing into the hydrogen refueling machine 500 from the inlet end. The hydrogen refueling machine 500 can safely and efficiently fill the compressed hydrogen gas into the hydrogen storage tank of the car.

[0076] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0077] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A mobile hydrogen refueling station, characterized in that, include: A container, comprising a body and a top cover, the top cover being detachably connected to the top of the body to form a vent at the top of the body; The unloading chamber is equipped with an unloading pipeline, the inlet end of which is used to connect to the hydrogen vehicle. A compression system includes a compressor and a hydraulic station, wherein the compressor and the hydraulic station are connected by a hydraulic pipeline, and the inlet end of the compressor is connected to the outlet end of the unloading pipeline; The chiller is connected to the compression system at least via cooling pipes; A hydrogen refueling machine, wherein the inlet end of the hydrogen refueling machine is connected to the outlet end of the compressor; The unloading chamber, the compression system, the chiller, and the hydrogen refueling machine are all integrated inside the container, with the chiller located between the compression system and the hydrogen refueling machine.

2. The mobile hydrogen refueling station according to claim 1, characterized in that, The compressor includes at least one compression section, which includes a pneumatic chamber and a hydraulic chamber separated by a piston plate. The pneumatic chamber is connected to the unloading pipeline, and the hydraulic chamber is connected to the hydraulic station through the hydraulic pipeline.

3. The mobile hydrogen refueling station according to claim 2, characterized in that, The pressure chamber includes a primary chamber and a secondary chamber. The inlet of the primary chamber is connected to the outlet of the unloading pipeline. The outlet of the primary chamber and the inlet of the secondary chamber are connected by a pipeline. The outlet of the secondary chamber is connected to the inlet of the hydrogen refueling machine.

4. The mobile hydrogen refueling station according to claim 2, characterized in that, The compressor has compression sections on both axial sides.

5. The mobile hydrogen refueling station according to any one of claims 1-4, characterized in that, The compression system also includes: At least one heat exchanger is connected to the cooling pipeline and is used to exchange the heat generated by the compression system to the chiller.

6. The mobile hydrogen refueling station according to claim 5, characterized in that, The at least one heat exchanger includes: A compressor heat exchanger is installed on the gas pipeline of the compressor; The heat exchanger of the hydraulic station is installed on the hydraulic pipeline of the hydraulic station.

7. The mobile hydrogen refueling station according to any one of claims 1-4, characterized in that, Also includes: The control room is integrated inside the container.

8. The mobile hydrogen refueling station according to claim 7, characterized in that, The unloading chamber, the compressor, the hydraulic station, the chiller, the hydrogen refueling machine, and the control room are all separated by partitions.

9. The mobile hydrogen refueling station according to any one of claims 1-4, characterized in that, Also includes: An venting tower is detachably connected to the top cover; The hydrogen refueling machine, the compressor, and the unloading chamber are all equipped with venting pipelines that are connected to the venting tower.

10. The mobile hydrogen refueling station according to any one of claims 1-4, characterized in that, Also includes: The nitrogen cylinder assembly is located inside the container or detachably connected to the outside of the container, and is connected to the unloading pipeline via a purging pipeline.

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