A multi-functional hydrogen refueling station based on a 45MPa compressor
By introducing a multifunctional structure into the hydrogen refueling station, including a 45MPa compressor and various hydrogen storage tanks and valves, the problems of slow hydrogen unloading speed and high cost in the existing technology have been solved, achieving efficient hydrogen unloading and storage, reducing hydrogen supply costs, and improving the economic benefits of the hydrogen refueling station.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING GAS DESIGN
- Filing Date
- 2025-07-01
- Publication Date
- 2026-07-31
AI Technical Summary
The inlet pressure requirement of the 45MPa compressor in the existing hydrogen refueling station is in the range of 5MPa to 20MPa. This causes the hydrogen output from the 20MPa long tube trailer to be unable to be unloaded, resulting in slow unloading speed, high temperature, increased power consumption, and affecting service life and economic benefits.
The multi-functional hydrogen refueling station, based on a 45MPa compressor, includes a hydrogen tube trailer, a first compressor, a second compressor, a booster hydrogen storage tank, a low-pressure hydrogen storage tank, a medium-pressure hydrogen storage tank, a high-pressure hydrogen storage tank, and a hydrogen refueling machine. By setting up multiple compressors and pipeline valves, it can effectively unload and store hydrogen in different pressure ranges to meet different pressure requirements.
It improves the effective carrying efficiency of hydrogen tube trailers, reduces hydrogen supply costs, enhances the economic benefits and stability of hydrogen refueling stations, and meets the hydrogen unloading needs under different pressures.
Smart Images
Figure CN224580115U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a hydrogen refueling station, specifically a multi-functional hydrogen refueling station based on a 45MPa compressor. Background Technology
[0002] Hydrogen energy is a highly efficient, clean, and sustainable new energy source, considered one of the most promising clean energy sources for the future. As a crucial infrastructure for hydrogen energy in the transportation sector, the layout and construction of hydrogen refueling stations have attracted widespread attention. Currently, the hydrogen refueling stations already built in my country mainly employ a 20MPa long-tube trailer system for transporting externally supplied hydrogen. This system utilizes a 45MPa compressor to pressurize the hydrogen output from the 20MPa long-tube trailer and stores it in low-pressure (30MPa), medium-pressure (35MPa), and high-pressure (45MPa) hydrogen storage tanks. Hydrogen fuel cell vehicles are then refueled through these tanks. This solution suffers from high hydrogen supply costs and poor economic efficiency in practical applications, mainly in the following aspects: Since the inlet pressure requirement of the 45MPa compressor is within the range of 5MPa to 20MPa, theoretically, hydrogen cannot be unloaded when the output pressure of the 20MPa long-tube trailer is below 5MPa. However, in actual unloading, the hydrogen refueling station stops unloading hydrogen when the output pressure of the 20MPa long-tube trailer is below 7MPa. This is partly due to the slow unloading speed and partly due to the significantly increased operating compression ratio and temperature rise of the 45MPa compressor, which increases power consumption and affects service life. Consequently, the effective carrying efficiency of the long-tube trailer is only about 65%, resulting in high hydrogen supply costs and impacting economic efficiency. Utility Model Content
[0003] The purpose of this invention is to provide a multifunctional hydrogen refueling station based on a 45MPa compressor, which has the advantages of simple structure, low cost, strong functionality, good adaptability, and stability and reliability.
[0004] To address the aforementioned problems in the existing technology, this utility model provides a multi-functional hydrogen refueling station based on a 45MPa compressor, comprising a hydrogen tube trailer, a first compressor, a second compressor, a booster hydrogen storage tank, a low-pressure hydrogen storage tank, a medium-pressure hydrogen storage tank, a high-pressure hydrogen storage tank, and a hydrogen refueling machine. The hydrogen tube trailer operates at a pressure of 20MPa. The first compressor is a 45MPa diaphragm compressor. The inlet of the first compressor is connected to the hydrogen tube trailer via a hydrogen unloading pipeline, which is equipped with a manual master control valve and a hydrogen unloading pneumatic valve. The outlet of the first compressor is connected to the low-pressure hydrogen storage tank, the medium-pressure hydrogen storage tank, and the high-pressure hydrogen storage tank respectively via low-pressure hydrogen storage pipeline, medium-pressure hydrogen storage pipeline, and high-pressure hydrogen storage pipeline. The low-pressure hydrogen storage pipeline is equipped with two low-pressure hydrogen storage pneumatic valves, the medium-pressure hydrogen storage pipeline with two medium-pressure hydrogen storage pneumatic valves, and the high-pressure hydrogen storage pipeline with two high-pressure hydrogen storage pneumatic valves. The second compressor is a 20MPa diaphragm compressor, and its inlet is connected to the manual master control valve via a booster input pipeline. The hydrogen unloading pipeline connects the valve and the hydrogen unloading pneumatic valve. A pressure-boosting input pneumatic valve is installed on the pressure-boosting input pipeline. The output port of the second compressor is connected to the pressure-boosting hydrogen storage tank via a pressure-boosting hydrogen storage pipeline. Two pressure-boosting hydrogen storage pneumatic valves are installed on the pressure-boosting hydrogen storage pipeline. The pressure-boosting hydrogen storage pipeline between the two pressure-boosting hydrogen storage pneumatic valves is connected to the hydrogen unloading pipeline between the hydrogen unloading pneumatic valve and the first compressor via a pressure-boosting output pipeline. A pressure-boosting output pneumatic valve is installed on the pressure-boosting output pipeline. The input port of the hydrogen dispenser is connected to two... The low-pressure hydrogen storage pipeline is connected between the low-pressure hydrogen storage pneumatic valves. A low-pressure hydrogen refueling pneumatic valve is installed on the low-pressure hydrogen refueling pipeline. The inlet of the hydrogen dispenser is connected to the medium-pressure hydrogen storage pipeline between the two medium-pressure hydrogen storage pneumatic valves through the medium-pressure hydrogen refueling pipeline. A medium-pressure hydrogen refueling pneumatic valve is installed on the medium-pressure hydrogen refueling pipeline. The inlet of the hydrogen dispenser is connected to the high-pressure hydrogen storage pipeline between the two high-pressure hydrogen storage pneumatic valves through the high-pressure hydrogen refueling pipeline. A high-pressure hydrogen refueling pneumatic valve is installed on the high-pressure hydrogen refueling pipeline. The outlet of the hydrogen dispenser is connected to the hydrogen refueling gun through the hydrogen refueling hose.
[0005] Furthermore, this utility model discloses a multi-functional hydrogen refueling station based on a 45MPa compressor, wherein the low-pressure hydrogen storage pipeline between the low-pressure hydrogen storage tank and the low-pressure hydrogen storage pneumatic valve is connected to the hydrogen unloading pipeline between the first compressor and the hydrogen unloading pneumatic valve through a first return pipeline, and a first return pneumatic valve is provided on the first return pipeline.
[0006] Furthermore, this utility model discloses a multi-functional hydrogen refueling station based on a 45MPa compressor, wherein the medium-pressure hydrogen storage pipeline between the medium-pressure hydrogen storage tank and the medium-pressure hydrogen storage pneumatic valve is connected to the hydrogen unloading pipeline between the first compressor and the hydrogen unloading pneumatic valve through a second return pipeline, and a second return pneumatic valve is provided on the second return pipeline.
[0007] Furthermore, this utility model discloses a multi-functional hydrogen refueling station based on a 45MPa compressor, wherein the high-pressure hydrogen storage pipeline between the high-pressure hydrogen storage tank and the high-pressure hydrogen storage pneumatic valve is connected to the hydrogen unloading pipeline between the first compressor and the hydrogen unloading pneumatic valve through a third return pipeline, and a third return pneumatic valve is provided on the third return pipeline.
[0008] Furthermore, this utility model discloses a multi-functional hydrogen refueling station based on a 45MPa compressor, wherein a first pressure sensor is provided on the hydrogen unloading pipeline between the manual master control valve and the hydrogen unloading pneumatic valve.
[0009] Furthermore, this utility model discloses a multi-functional hydrogen refueling station based on a 45MPa compressor, wherein the booster hydrogen storage tank is equipped with a second pressure sensor.
[0010] Furthermore, this utility model discloses a multi-functional hydrogen refueling station based on a 45MPa compressor, wherein the low-pressure hydrogen storage tank is equipped with a third pressure sensor.
[0011] Furthermore, this utility model discloses a multi-functional hydrogen refueling station based on a 45MPa compressor, wherein the medium-pressure hydrogen storage tank is equipped with a fourth pressure sensor.
[0012] Furthermore, this utility model discloses a multi-functional hydrogen refueling station based on a 45MPa compressor, wherein the high-pressure hydrogen storage tank is equipped with a fifth pressure sensor.
[0013] This utility model, a multi-functional hydrogen refueling station based on a 45MPa compressor, has the following advantages compared with existing technologies: This utility model comprises a hydrogen long-tube trailer, a first compressor, a second compressor, a booster hydrogen storage tank, a low-pressure hydrogen storage tank, a medium-pressure hydrogen storage tank, a high-pressure hydrogen storage tank, and a hydrogen refueling machine. The hydrogen long-tube trailer operates at a pressure of 20MPa. The first compressor is a 45MPa diaphragm compressor, and the second compressor is a 20MPa diaphragm compressor. The input port of the first compressor is connected to the hydrogen long-tube trailer via a hydrogen unloading pipeline. The pipeline is connected to a trailer, and a manual master control valve and a hydrogen unloading pneumatic valve are installed on the unloading pipeline. The output port of the first compressor is connected to the low-pressure hydrogen storage tank, medium-pressure hydrogen storage tank, and high-pressure hydrogen storage tank respectively through low-pressure hydrogen storage pipeline, medium-pressure hydrogen storage pipeline, and high-pressure hydrogen storage pipeline. Two low-pressure hydrogen storage pneumatic valves, two medium-pressure hydrogen storage pneumatic valves, and two high-pressure hydrogen storage pneumatic valves are installed on the low-pressure hydrogen storage pipeline and the high-pressure hydrogen storage pipeline. The input port of the second compressor is connected to the manual master control valve and the hydrogen unloading pneumatic valve through the pressure boosting input pipeline. The pneumatic valves are connected to the hydrogen unloading pipeline, and a boosting input pneumatic valve is installed on the boosting input pipeline, allowing the output port of the second compressor to be connected to the boosting hydrogen storage tank through the boosting hydrogen storage pipeline. Two boosting hydrogen storage pneumatic valves are installed on the boosting hydrogen storage pipeline, and the boosting hydrogen storage pipeline between these two valves is connected to the hydrogen unloading pipeline between the hydrogen unloading pneumatic valve and the first compressor through the boosting output pipeline. A boosting output pneumatic valve is installed on the boosting output pipeline, allowing the input port of the hydrogen dispenser to be connected to the two low-pressure hydrogen storage tanks through the low-pressure hydrogen dispensing pipeline. A low-pressure hydrogen storage pipeline is connected between the hydrogen pneumatic valves, and a low-pressure hydrogen refueling pneumatic valve is installed on the low-pressure hydrogen refueling pipeline. The inlet of the hydrogen dispenser is connected to the medium-pressure hydrogen storage pipeline between the two medium-pressure hydrogen storage pneumatic valves through the medium-pressure hydrogen refueling pipeline. A medium-pressure hydrogen refueling pneumatic valve is installed on the medium-pressure hydrogen refueling pipeline, and the inlet of the hydrogen dispenser is connected to the high-pressure hydrogen storage pipeline between the two high-pressure hydrogen storage pneumatic valves through the high-pressure hydrogen refueling pipeline. A high-pressure hydrogen refueling pneumatic valve is installed on the high-pressure hydrogen refueling pipeline, and the outlet of the hydrogen dispenser is connected to the hydrogen refueling nozzle through a hydrogen refueling hose. This constitutes a multi-functional hydrogen refueling station based on a 45MPa compressor, which has the advantages of simple structure, low cost, strong functionality, good adaptability, and stable reliability.In practical applications, when the output pressure of the hydrogen long-tube trailer is greater than 7 MPa and less than or equal to 20 MPa, the hydrogen refueling station operates in normal mode. At this time, the manual master control valve and the hydrogen unloading pneumatic valve are opened, the first compressor is started, and the hydrogen output from the hydrogen long-tube trailer is pressurized and stored in the high-pressure, medium-pressure, and low-pressure hydrogen storage tanks respectively by opening the high-pressure, medium-pressure, and low-pressure hydrogen storage tanks. Hydrogen is then used to refuel hydrogen fuel cell vehicles through these tanks. When the output pressure of the hydrogen long-tube trailer is greater than 1.6 MPa... When the pressure is less than or equal to 7 MPa, the hydrogen refueling station operates in boost mode. At this time, the manual master control valve, boost input pneumatic valve, and boost storage pneumatic valve are opened, and the second compressor is started. The hydrogen output from the hydrogen tube trailer is then boosted and stored in the boost storage tank. Subsequently, by opening the boost storage pneumatic valve and boost output pneumatic valve and starting the first compressor, hydrogen can be stored in the low-pressure, medium-pressure, and high-pressure storage tanks as in normal mode. Then, hydrogen is refueled for hydrogen fuel cell vehicles through the low-pressure, medium-pressure, and high-pressure storage tanks. Compared with existing hydrogen refueling stations, this invention, by setting up a second compressor, a boosted hydrogen storage tank, and corresponding pipelines and control valves, can boost the hydrogen and store it in the boosted hydrogen storage tank when the output pressure of the hydrogen tube trailer is lower than 7MPa, so as to meet the inlet pressure requirements of the first compressor. This achieves the technical objective of continuing to unload hydrogen when the output pressure of the hydrogen tube trailer is lower than 7MPa, improves the effective carrying efficiency of the hydrogen tube trailer, and reduces the cost of hydrogen supply.
[0014] The following detailed description of a multi-functional hydrogen refueling station based on a 45MPa compressor, with reference to the accompanying drawings, provides further insight into this invention. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of a multifunctional hydrogen refueling station based on a 45MPa compressor according to this utility model. Detailed Implementation
[0016] First, it should be noted that the directional terms such as up, down, left, right, front, and back mentioned in this utility model are only descriptions based on the accompanying drawings for ease of understanding, and are not intended to limit the technical solution or the scope of protection claimed in this utility model.
[0017] like Figure 1The present invention discloses a specific embodiment of a multifunctional hydrogen refueling station based on a 45MPa compressor, comprising a hydrogen tube trailer 1, a first compressor 2, a second compressor 3, a booster hydrogen storage tank 4, a low-pressure hydrogen storage tank 5, a medium-pressure hydrogen storage tank 6, a high-pressure hydrogen storage tank 7, and a hydrogen refueling machine 8. The hydrogen tube trailer 1 is a 20MPa tube trailer, meaning its working pressure is 20MPa. The first compressor 2 is a 45MPa diaphragm compressor, and the second compressor 3 is a 20MPa diaphragm compressor. The inlet of the first compressor 2 is connected to the hydrogen long-tube trailer 1 through the hydrogen unloading pipeline, and a manual master control valve 21 and a hydrogen unloading pneumatic valve 22 are installed on the hydrogen unloading pipeline. The outlet of the first compressor 2 is connected to the low-pressure hydrogen storage tank 5, the medium-pressure hydrogen storage tank 6, and the high-pressure hydrogen storage tank 7 through the low-pressure hydrogen storage pipeline, the medium-pressure hydrogen storage pipeline, and the high-pressure hydrogen storage pipeline, respectively. The low-pressure hydrogen storage pipeline is equipped with two low-pressure hydrogen storage pneumatic valves 51, the medium-pressure hydrogen storage pipeline is equipped with two medium-pressure hydrogen storage pneumatic valves 61, and the high-pressure hydrogen storage pipeline is equipped with two high-pressure hydrogen storage pneumatic valves 71. The input port of the second compressor 3 is connected to the hydrogen unloading pipeline between the manual master control valve 21 and the hydrogen unloading pneumatic valve 22 via a boost input pipeline, and a boost input pneumatic valve 31 is installed on the boost input pipeline. The output port of the second compressor 3 is connected to the boost hydrogen storage tank 4 via a boost hydrogen storage pipeline, and two boost hydrogen storage pneumatic valves 41 are installed on the boost hydrogen storage pipeline. The boost hydrogen storage pipeline between the two boost hydrogen storage pneumatic valves 41 is connected to the hydrogen unloading pipeline between the hydrogen unloading pneumatic valve 22 and the first compressor 2 via a boost output pipeline, and a boost output pneumatic valve 42 is installed on the boost output pipeline. The input port of the hydrogen refueling machine 8 is connected to the low-pressure hydrogen storage pipeline between two low-pressure hydrogen storage pneumatic valves 51 via a low-pressure hydrogen refueling pipeline, and a low-pressure hydrogen refueling pneumatic valve 81 is installed on the low-pressure hydrogen refueling pipeline. The input port of the hydrogen refueling machine 8 is connected to the medium-pressure hydrogen storage pipeline between two medium-pressure hydrogen storage pneumatic valves 61 via a medium-pressure hydrogen refueling pipeline, and a medium-pressure hydrogen refueling pneumatic valve 82 is installed on the medium-pressure hydrogen refueling pipeline. The input port of the hydrogen refueling machine 8 is connected to the high-pressure hydrogen storage pipeline between two high-pressure hydrogen storage pneumatic valves 71 via a high-pressure hydrogen refueling pipeline, and a high-pressure hydrogen refueling pneumatic valve 83 is installed on the high-pressure hydrogen refueling pipeline. The output port of the hydrogen refueling machine 6 is connected to a hydrogen refueling gun 84 via a hydrogen refueling hose, so that the hydrogen fuel cell vehicle 100 that needs to be refueled can be connected through the hydrogen refueling gun 84.
[0018] The above setup constitutes a multi-functional hydrogen refueling station based on a 45MPa compressor. In practical applications, when the output pressure of the hydrogen tube trailer 1 is greater than 7MPa and less than or equal to 20MPa, the hydrogen refueling station operates in normal mode. At this time, the manual master control valve 21 and the hydrogen unloading pneumatic valve 22 are opened to start the first compressor 2. By opening the high, medium, and low-pressure hydrogen storage pneumatic valves respectively, the hydrogen output from the hydrogen tube trailer 1 is pressurized and stored in the high-pressure hydrogen storage tank 7, the medium-pressure hydrogen storage tank 6, and the low-pressure hydrogen storage tank 5. The hydrogen is then refueled for the hydrogen fuel cell vehicle 100 through the low-pressure hydrogen storage tank 5, the medium-pressure hydrogen storage tank 6, and the high-pressure hydrogen storage tank 7. When the output pressure of the hydrogen tube trailer 1 is greater than 7MPa and less than or equal to 20MPa, the hydrogen refueling station operates in normal mode. At this time, the manual master control valve 21 and the hydrogen unloading pneumatic valve 22 are opened to start the first compressor 2. By opening the high, medium, and low-pressure hydrogen storage pneumatic valves respectively, the hydrogen is pressurized and stored in the high-pressure hydrogen storage tank 7, the medium-pressure hydrogen storage tank 6, and the low-pressure hydrogen storage tank 7, the hydrogen is refueled for the hydrogen fuel cell vehicle 100. When the output pressure is greater than 1.6 MPa and less than or equal to 7 MPa, the hydrogen refueling station operates in boost mode. At this time, the manual master control valve 21, the boost input pneumatic valve 31, and the boost storage pneumatic valve 41 are opened, and the second compressor 3 is started. The hydrogen output from the hydrogen tube trailer 1 is then boosted and stored in the boost storage tank 4. Subsequently, by opening the boost storage pneumatic valve 41 and the boost output pneumatic valve 42, and starting the first compressor 2, hydrogen can be stored in the low-pressure storage tank 5, the medium-pressure storage tank 6, and the high-pressure storage tank 7 as in normal mode. Then, hydrogen is refueled for the hydrogen fuel cell vehicle 100 through the low-pressure storage tank 5, the medium-pressure storage tank 6, and the high-pressure storage tank 7. Compared with existing hydrogen refueling stations, this invention, by setting up a second compressor 3, a pressurized hydrogen storage tank 4, and corresponding pipelines and control valves, can store hydrogen in the pressurized hydrogen storage tank 4 after pressurization when the output pressure of the hydrogen tube trailer 1 is lower than 7MPa, so as to meet the inlet pressure requirements of the first compressor 2. This achieves the technical objective of continuing to unload hydrogen when the output pressure of the hydrogen tube trailer 1 is lower than 7MPa, improves the effective carrying efficiency of the hydrogen tube trailer 1, reduces the hydrogen supply cost of the hydrogen refueling station, and improves economic benefits.
[0019] As an optimization, this specific embodiment connects the low-pressure hydrogen storage pipeline between the low-pressure hydrogen storage tank 5 and the low-pressure hydrogen storage pneumatic valve 51 to the hydrogen unloading pipeline between the first compressor 2 and the hydrogen unloading pneumatic valve 22 through the first return pipeline, and sets the first return pneumatic valve 52 on the first return pipeline. When neither the hydrogen long-tube trailer 1 nor the pressurized hydrogen storage tank 4 can provide a hydrogen source, and the pressure of the medium-pressure hydrogen storage tank 6 or / and the high-pressure hydrogen storage tank 7 does not meet the hydrogen refueling requirements, and the pressure of the low-pressure hydrogen storage tank 5 is lower than 20 MPa, by starting the first compressor 2 and opening the first reflux pneumatic valve 52, the low-pressure hydrogen refueling pneumatic valve 81, and the low-pressure hydrogen storage pneumatic valve 51 connected to the first compressor 2, the hydrogen in the low-pressure hydrogen storage tank 5 can flow back to the inlet of the first compressor 2. After being pressurized by the first compressor 2, the hydrogen is directly refueled to the hydrogen fuel cell vehicle 100 through the low-pressure hydrogen storage pipeline, the low-pressure hydrogen refueling pipeline, and the hydrogen refueling machine 8, so as to meet the emergency hydrogen refueling needs when the hydrogen source is short, thus improving functionality and practicality. Similarly, in this specific embodiment, the medium-pressure hydrogen storage pipeline between the medium-pressure hydrogen storage tank 6 and the medium-pressure hydrogen storage pneumatic valve 61 is connected to the hydrogen unloading pipeline between the first compressor 2 and the hydrogen unloading pneumatic valve 22 via a second return pipeline, and a second return pneumatic valve 62 is installed on the second return pipeline. When neither the hydrogen long-tube trailer 1 nor the booster hydrogen storage tank 4 can provide a hydrogen source, and when the pressure of the medium-pressure hydrogen storage tank 6 or / and the high-pressure hydrogen storage tank 7 does not meet the hydrogen refueling requirements, and the pressure of the medium-pressure hydrogen storage tank 6 is lower than 20 MPa, by starting the first compressor 2 and opening the second return pneumatic valve 62, the medium-pressure hydrogen refueling pneumatic valve 82, and the medium-pressure hydrogen storage pneumatic valve 61 connected to the first compressor 2, the hydrogen in the medium-pressure hydrogen storage tank 6 can flow back to the inlet of the first compressor 2. After being pressurized by the first compressor 2, the hydrogen is directly refueled to the hydrogen fuel cell vehicle 100 through the medium-pressure hydrogen storage pipeline, the medium-pressure hydrogen refueling pipeline, and the hydrogen refueling machine 8 to meet the emergency hydrogen refueling needs when the hydrogen source is short. Similarly, in this specific embodiment, the high-pressure hydrogen storage pipeline between the high-pressure hydrogen storage tank 7 and the high-pressure hydrogen storage pneumatic valve 71 is connected to the hydrogen unloading pipeline between the first compressor 2 and the hydrogen unloading pneumatic valve 22 via a third return pipeline, and a third return pneumatic valve 72 is installed on the third return pipeline. When neither the hydrogen long-tube trailer 1 nor the booster hydrogen storage tank 4 can provide a hydrogen source, and when the pressure of the medium-pressure hydrogen storage tank 6 or / and the high-pressure hydrogen storage tank 7 does not meet the hydrogen refueling requirements, and the pressure of the high-pressure hydrogen storage tank 7 is lower than 20 MPa, by starting the first compressor 2 and opening the third return pneumatic valve 72, the high-pressure hydrogen refueling pneumatic valve 83, and the high-pressure hydrogen storage pneumatic valve 71 connected to the first compressor 2, the hydrogen in the high-pressure hydrogen storage tank 7 can flow back to the inlet of the first compressor 2. After being pressurized by the first compressor 2, it can be directly used to refuel the hydrogen fuel cell vehicle 100 through the high-pressure hydrogen storage pipeline, the high-pressure hydrogen refueling pipeline, and the hydrogen refueling machine 8 to meet the emergency hydrogen refueling needs when the hydrogen source is scarce.It should be noted that the low-pressure hydrogen storage pneumatic valve 51 connected to the first compressor 2 refers to the one of the two low-pressure hydrogen storage pneumatic valves 51 that is closer to the first compressor 2; the medium-pressure hydrogen storage pneumatic valve 61 connected to the first compressor 2 refers to the one of the two medium-pressure hydrogen storage pneumatic valves 61 that is closer to the first compressor 2; and the high-pressure hydrogen storage pneumatic valve 71 connected to the first compressor 2 refers to the one of the two high-pressure hydrogen storage pneumatic valves 71 that is closer to the first compressor 2.
[0020] In practical applications, for ease of detection and control, this utility model provides a first pressure sensor 23 on the hydrogen unloading pipeline between the manual master control valve 21 and the hydrogen unloading pneumatic valve 22, a second pressure sensor 43 on the booster hydrogen storage tank 4, a third pressure sensor 53 on the low-pressure hydrogen storage tank 5, a fourth pressure sensor 63 on the medium-pressure hydrogen storage tank 6, and a fifth pressure sensor 73 on the high-pressure hydrogen storage tank 7.
[0021] To facilitate understanding by technical personnel, the control and operation methods of the multi-functional hydrogen refueling station are briefly explained below. In the initial state, all valves should be closed. When the output pressure of the hydrogen long-tube trailer 1 is greater than 7 MPa and less than or equal to 20 MPa, the hydrogen refueling station should operate in normal mode. When the output pressure of the hydrogen long-tube trailer 1 is greater than 1.6 MPa and less than or equal to 7 MPa, the hydrogen refueling station should operate in pressure boosting mode. When the output pressure of the hydrogen long-tube trailer 1 is less than or equal to 1.6 MPa, the hydrogen refueling station should be shut down. After replacing the hydrogen long-tube trailer 1, the hydrogen refueling station should be restarted in either of the above two modes.
[0022] The normal mode specifically includes the following steps:
[0023] S1-1. Open the manual master control valve 21 and the hydrogen unloading pneumatic valve 22.
[0024] S1-2. When the pressure of the high-pressure hydrogen storage tank 7 is lower than 40 MPa, open both high-pressure hydrogen storage pneumatic valves 71 and start the first compressor 2 until the pressure of the high-pressure hydrogen storage tank 7 rises to 45 MPa. By storing or replenishing hydrogen in the high-pressure hydrogen storage tank 7 through this step, the pressure of the high-pressure hydrogen storage tank 7 can be maintained within the range of 40 MPa to 45 MPa.
[0025] S1-3. When the pressure of the medium-pressure hydrogen storage tank 6 is lower than 30 MPa, open the two medium-pressure hydrogen storage pneumatic valves 61 and start the first compressor 2 until the pressure of the medium-pressure hydrogen storage tank 6 rises to 35 MPa. By storing or replenishing hydrogen in the medium-pressure hydrogen storage tank 6 through this step, the pressure of the medium-pressure hydrogen storage tank 6 can be maintained within the range of 30 MPa to 35 MPa.
[0026] S1-4. When the pressure of the low-pressure hydrogen storage tank 5 is lower than 25 MPa, open both low-pressure hydrogen storage pneumatic valves 51 and start the first compressor 2 until the pressure of the low-pressure hydrogen storage tank 5 rises to 30 MPa. By storing or replenishing hydrogen in the low-pressure hydrogen storage tank 5 through this step, the pressure of the low-pressure hydrogen storage tank 5 can be maintained within the range of 25 MPa to 30 MPa.
[0027] The above steps describe the hydrogen unloading, storage, and replenishment process in normal mode. Normal mode also includes a hydrogen refueling process, specifically the process of refueling a hydrogen fuel cell vehicle 100 with hydrogen, which includes the following steps:
[0028] S1-5. When the pressure of the on-board hydrogen storage tank is lower than 20 MPa, connect the hydrogen refueling gun 84 to the hydrogen fuel cell vehicle 100, and open the low-pressure hydrogen refueling pneumatic valve 81 and the low-pressure hydrogen storage pneumatic valve 51 connected to the low-pressure hydrogen storage tank 5. Through this step, the hydrogen fuel cell vehicle 100 can be refueled with hydrogen during the low-pressure stage using the low-pressure hydrogen storage tank 5.
[0029] S1-6. When the pressure of the on-board hydrogen storage tank rises to 25 MPa, close the low-pressure hydrogen refueling pneumatic valve 81 and the low-pressure hydrogen storage pneumatic valve 51 connected to the low-pressure hydrogen storage tank 5, and open the medium-pressure hydrogen refueling pneumatic valve 82 and the medium-pressure hydrogen storage pneumatic valve 61 connected to the medium-pressure hydrogen storage tank 6. This step allows the hydrogen fuel cell vehicle 100 to be refueled at medium pressure using the medium-pressure hydrogen storage tank 6.
[0030] S1-7. When the pressure of the on-board hydrogen storage tank rises to 30MPa, close the low-pressure hydrogen refueling pneumatic valve 82 and the medium-pressure hydrogen storage pneumatic valve 61 connected to the medium-pressure hydrogen storage tank 6, and open the high-pressure hydrogen refueling pneumatic valve 83 and the high-pressure hydrogen storage pneumatic valve 71 connected to the high-pressure hydrogen storage tank 7. Through this step, the hydrogen fuel cell vehicle 100 can be refueled with hydrogen in the high-pressure stage using the high-pressure hydrogen storage tank 7.
[0031] S1-8. When the pressure of the on-board hydrogen storage tank rises to 35MPa, close the high-pressure hydrogen refueling pneumatic valve 83 and the high-pressure hydrogen storage pneumatic valve 71 connected to the high-pressure hydrogen storage tank 7, and disconnect the hydrogen refueling nozzle 84 from the hydrogen fuel cell vehicle 100. After the high-pressure stage of hydrogen refueling is completed, simply disconnect the hydrogen refueling nozzle 84 from the hydrogen fuel cell vehicle 100.
[0032] It should be noted that the low-pressure hydrogen storage pneumatic valve 51 connected to the low-pressure hydrogen storage tank 5 refers to the one of the two low-pressure hydrogen storage pneumatic valves 51 that is closer to the low-pressure hydrogen storage tank 5; the medium-pressure hydrogen storage pneumatic valve 61 connected to the medium-pressure hydrogen storage tank 6 refers to the one of the two medium-pressure hydrogen storage pneumatic valves 61 that is closer to the medium-pressure hydrogen storage tank 6; and the high-pressure hydrogen storage pneumatic valve 71 connected to the high-pressure hydrogen storage tank 7 refers to the one of the two high-pressure hydrogen storage pneumatic valves 71 that is closer to the high-pressure hydrogen storage tank 7.
[0033] The boost mode specifically includes the following steps:
[0034] S2-1. When the pressure of the boosted hydrogen storage tank 4 is lower than 10 MPa, open the manual main control valve 21, the hydrogen unloading pneumatic valve 22, and the two boosting input pneumatic valves 31, and start the second compressor 3 until the pressure of the boosted hydrogen storage tank 4 rises to 20 MPa. By storing or replenishing hydrogen in the boosted hydrogen storage tank 4 through this step, the pressure of the boosted hydrogen storage tank 4 can be maintained above 10 MPa.
[0035] S2-2. When the pressure in the high-pressure hydrogen storage tank 7 is below 40 MPa, open the booster output pneumatic valve 42, the booster hydrogen storage pneumatic valve 41 connected to the booster hydrogen storage tank 4, and the two high-pressure hydrogen storage pneumatic valves 71, and start the first compressor 2 until the pressure in the high-pressure hydrogen storage tank 7 rises to 45 MPa. By replenishing hydrogen to the high-pressure hydrogen storage tank 7 through this step, the pressure in the high-pressure hydrogen storage tank 7 can be maintained within the range of 40 MPa to 45 MPa.
[0036] S2-3. When the pressure in the medium-pressure hydrogen storage tank 6 is below 30 MPa, open the booster output pneumatic valve 42, the booster hydrogen storage pneumatic valve 41 connected to the booster hydrogen storage tank 4, and the two medium-pressure hydrogen storage pneumatic valves 61, and start the first compressor 2 until the pressure in the medium-pressure hydrogen storage tank 6 rises to 35 MPa. By replenishing hydrogen to the medium-pressure hydrogen storage tank 6 through this step, the pressure in the medium-pressure hydrogen storage tank 6 can be maintained within the range of 30 MPa to 35 MPa.
[0037] S2-4. When the pressure of the low-pressure hydrogen storage tank 5 is lower than 25 MPa, open the boost output pneumatic valve 42, the boost hydrogen storage pneumatic valve 41 connected to the boost hydrogen storage tank 4, and the two low-pressure hydrogen storage pneumatic valves 51, and start the first compressor 2 until the pressure of the low-pressure hydrogen storage tank 5 rises to 30 MPa. By replenishing hydrogen to the low-pressure hydrogen storage tank 5 through this step, the pressure of the low-pressure hydrogen storage tank 5 can be maintained within the range of 25 MPa to 30 MPa.
[0038] It should be noted that the pressurized hydrogen storage pneumatic valve 41 connected to the pressurized hydrogen storage tank 4 refers to the one of the two pressurized hydrogen storage pneumatic valves 41 that is closer to the pressurized hydrogen storage tank 4.
[0039] The above steps describe the hydrogen unloading and replenishment process in boost mode. Boost mode also includes a hydrogen refueling process, specifically the process of refueling the hydrogen fuel cell vehicle 100 with hydrogen, which includes the following steps:
[0040] S2-5. When the pressure of the on-board hydrogen storage tank is lower than 20 MPa, connect the hydrogen refueling gun 84 to the hydrogen fuel cell vehicle 100, and open the low-pressure hydrogen refueling pneumatic valve 81 and the low-pressure hydrogen storage pneumatic valve 51 connected to the low-pressure hydrogen storage tank 5. Through this step, the hydrogen fuel cell vehicle 100 can be refueled with hydrogen during the low-pressure stage using the low-pressure hydrogen storage tank 5.
[0041] S2-6. When the pressure of the on-board hydrogen storage tank rises to 25 MPa, close the low-pressure hydrogen refueling pneumatic valve 81 and the low-pressure hydrogen storage pneumatic valve 51 connected to the low-pressure hydrogen storage tank 5, and open the medium-pressure hydrogen refueling pneumatic valve 82 and the medium-pressure hydrogen storage pneumatic valve 61 connected to the medium-pressure hydrogen storage tank 6. This step allows the hydrogen fuel cell vehicle 100 to be refueled with hydrogen at the medium-pressure stage using the medium-pressure hydrogen storage tank 6.
[0042] S2-7. When the pressure of the on-board hydrogen storage tank rises to 30MPa, close the low-pressure hydrogen refueling pneumatic valve 82 and the medium-pressure hydrogen storage pneumatic valve 61 connected to the medium-pressure hydrogen storage tank 6, and open the high-pressure hydrogen refueling pneumatic valve 83 and the high-pressure hydrogen storage pneumatic valve 71 connected to the high-pressure hydrogen storage tank 7. Through this step, the hydrogen fuel cell vehicle 100 can be refueled with hydrogen in the high-pressure stage using the high-pressure hydrogen storage tank 7.
[0043] S2-8. When the pressure of the on-board hydrogen storage tank rises to 35MPa, close the high-pressure hydrogen refueling pneumatic valve 83 and the high-pressure hydrogen storage pneumatic valve 71 connected to the high-pressure hydrogen storage tank 7, and disconnect the hydrogen refueling nozzle 84 from the hydrogen fuel cell vehicle 100. After the high-pressure stage of hydrogen refueling is completed, simply disconnect the hydrogen refueling nozzle 84 from the hydrogen fuel cell vehicle 100.
[0044] It should be noted that the on-board hydrogen storage tank in this article refers to the hydrogen storage tank on the hydrogen fuel cell vehicle 100, and connecting the hydrogen refueling nozzle 84 to the hydrogen fuel cell vehicle 100 means connecting the hydrogen refueling nozzle 84 to the on-board hydrogen storage tank. Normally, hydrogen refueling is only performed when the pressure of the on-board hydrogen storage tank is below 20 MPa. If hydrogen is refueled when the pressure of the on-board hydrogen storage tank is between 20 MPa and 25 MPa, the hydrogen refueling process in normal mode and boost mode is the same as when the pressure of the on-board hydrogen storage tank is below 20 MPa. If hydrogen is refueled when the pressure of the on-board hydrogen storage tank is between 25 MPa and 30 MPa, the hydrogen refueling process in normal mode and boost mode should skip the low-pressure stage. If hydrogen is refueled when the pressure of the on-board hydrogen storage tank is between 30 MPa and 35 MPa, the hydrogen refueling process in normal mode and boost mode should skip the low-pressure and medium-pressure stages. It should also be noted that the pressure of the on-board hydrogen storage tank is detected by the hydrogen refueling machine 6, and both the hydrogen refueling machine 6 and its hydrogen refueling nozzle 84 are existing devices in the field.
[0045] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications made by those skilled in the art based on the technical solution of the present utility model without departing from the design concept of the present utility model shall fall within the scope of protection defined by the claims of the present utility model.
Claims
1. A multifunctional hydrogen station based on a 45 MPa compressor, characterized in that, The system includes a hydrogen tube trailer (1), a first compressor (2), a second compressor (3), a booster hydrogen storage tank (4), a low-pressure hydrogen storage tank (5), a medium-pressure hydrogen storage tank (6), a high-pressure hydrogen storage tank (7), and a hydrogen dispenser (8). The working pressure of the hydrogen tube trailer (1) is 20 MPa. The first compressor (2) is a 45 MPa diaphragm compressor. The inlet of the first compressor (2) is connected to the hydrogen tube trailer (1) through a hydrogen unloading pipeline. The hydrogen unloading pipeline is equipped with a manual master control valve (21) and a hydrogen unloading pneumatic valve (22). The outlet of the first compressor (2) is connected to the hydrogen tube trailer (1) through a hydrogen unloading pipeline. The low-pressure hydrogen storage pipeline, the medium-pressure hydrogen storage pipeline, and the high-pressure hydrogen storage pipeline are connected to the low-pressure hydrogen storage tank (5), the medium-pressure hydrogen storage tank (6), and the high-pressure hydrogen storage tank (7), respectively. The low-pressure hydrogen storage pipeline is equipped with two low-pressure hydrogen storage pneumatic valves (51), the medium-pressure hydrogen storage pipeline is equipped with two medium-pressure hydrogen storage pneumatic valves (61), and the high-pressure hydrogen storage pipeline is equipped with two high-pressure hydrogen storage pneumatic valves (71). The second compressor (3) is a 20MPa diaphragm compressor. The input port of the second compressor (3) is connected to the unloading pipeline between the manual master control valve (21) and the unloading pneumatic valve (22) through the pressure boosting input pipeline. The boosting input pipeline is equipped with a boosting input pneumatic valve (31). The output port of the second compressor (3) is connected to the boosting hydrogen storage tank (4) through a boosting hydrogen storage pipeline. The boosting hydrogen storage pipeline is equipped with two boosting hydrogen storage pneumatic valves (41). The boosting hydrogen storage pipeline between the two boosting hydrogen storage pneumatic valves (41) is connected to the unloading hydrogen pipeline between the unloading hydrogen valve (22) and the first compressor (2) through a boosting output pipeline. The boosting output pipeline is equipped with a boosting output pneumatic valve (42). The input port of the hydrogen dispenser (8) is connected to two low-pressure hydrogen storage pneumatic valves (51) through a low-pressure hydrogen dispensing pipeline. The low-pressure hydrogen storage pipeline is connected between the two medium-pressure hydrogen storage pneumatic valves (61). The low-pressure hydrogen filling pipeline is equipped with a low-pressure hydrogen filling pneumatic valve (81). The inlet of the hydrogen dispenser (8) is connected to the medium-pressure hydrogen storage pipeline between the two medium-pressure hydrogen storage pneumatic valves (61) through the medium-pressure hydrogen filling pipeline. The medium-pressure hydrogen filling pipeline is equipped with a medium-pressure hydrogen filling pneumatic valve (82). The inlet of the hydrogen dispenser (8) is connected to the high-pressure hydrogen storage pipeline between the two high-pressure hydrogen storage pneumatic valves (71) through the high-pressure hydrogen filling pipeline. The high-pressure hydrogen filling pipeline is equipped with a high-pressure hydrogen filling pneumatic valve (83). The outlet of the hydrogen dispenser (8) is connected to a hydrogen filling gun (84) through a hydrogen filling hose.
2. The multifunctional hydrogen refueling station based on a 45MPa compressor according to claim 1, characterized in that, The low-pressure hydrogen storage pipeline between the low-pressure hydrogen storage tank (5) and the low-pressure hydrogen storage pneumatic valve (51) is connected to the hydrogen unloading pipeline between the first compressor (2) and the hydrogen unloading pneumatic valve (22) through the first return pipeline. The first return pipeline is equipped with a first return pneumatic valve (52).
3. The multifunctional hydrogen refueling station based on a 45MPa compressor according to claim 1, characterized in that, The medium-pressure hydrogen storage pipeline between the medium-pressure hydrogen storage tank (6) and the medium-pressure hydrogen storage pneumatic valve (61) is connected to the hydrogen unloading pipeline between the first compressor (2) and the hydrogen unloading pneumatic valve (22) through the second return pipeline. The second return pipeline is equipped with a second return pneumatic valve (62).
4. The multifunctional hydrogen refueling station based on a 45MPa compressor according to claim 1, characterized in that, The high-pressure hydrogen storage pipeline between the high-pressure hydrogen storage tank (7) and the high-pressure hydrogen storage pneumatic valve (71) is connected to the hydrogen unloading pipeline between the first compressor (2) and the hydrogen unloading pneumatic valve (22) through the third return pipeline. The third return pipeline is equipped with a third return pneumatic valve (72).
5. The multifunctional hydrogen refueling station based on a 45MPa compressor according to claim 1, characterized in that, A first pressure sensor (23) is provided on the hydrogen unloading pipeline between the manual master control valve (21) and the hydrogen unloading pneumatic valve (22).
6. The multifunctional hydrogen refueling station based on a 45MPa compressor according to claim 1, characterized in that, The pressurized hydrogen storage tank (4) is equipped with a second pressure sensor (43).
7. The multifunctional hydrogen refueling station based on a 45MPa compressor according to claim 1, characterized in that, The low-pressure hydrogen storage tank (5) is equipped with a third pressure sensor (53).
8. The multifunctional hydrogen refueling station based on a 45MPa compressor according to claim 1, characterized in that, The medium-pressure hydrogen storage tank (6) is equipped with a fourth pressure sensor (63).
9. The multifunctional hydrogen refueling station based on a 45MPa compressor according to claim 1, characterized in that, The high-pressure hydrogen storage tank (7) is equipped with a fifth pressure sensor (73).