Hydrogen refueling station filling system based on inland wharf
By setting up a hydrogenation station with a 20MPa primary gas storage bottle group and a 45MPa secondary gas storage bottle group at the inland terminal, the filling system solves the problem of large-capacity hydrogenation speed for ships, and improves the filling efficiency through the cooling system. Efficiency and safety.
Patent Information
- Application Number
- CN202420197498.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-26
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-01-26
AI Technical Summary
The prior art is difficult to recharge large capacity of ships in a short period of time, and the traditional hydrogen pipe bundle refueling speed is slow, which cannot meet the needs of large capacity refueling of ships.
A hydrogen refueling station filling system based on an inland river terminal is designed, which realizes hydrogenation of vehicles through a 20MPa primary gas storage bottle group, and realizes rapid filling of ships through a 45 MPa secondary gas storage bottle group. Heat exchangers and hydrogenation chillers are used to cool the hydrogen during the filling process.
The ship with 240kg capacity was achieved within one hour, and the injection rate was not greater than 7.2kg/min, and the temperature was reduced by cooling the hydrogen to ensure the safety and efficiency of the injection process.
Smart Images
Figure CN222392669U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydrogen refueling stations, and in particular to a hydrogen refueling station filling system based on an inland river wharf. Background Art
[0002] As a low-energy, low-pollution, and high-efficiency energy material, hydrogen is widely used in energy and power equipment. At present, some cars, ships, airplanes, etc. use hydrogen as a fuel energy source. Taking hydrogen fuel vehicles as an example, hydrogen fuel vehicles can usually be equipped with hydrogen storage devices (such as hydrogen storage bottles). By pre-filling the hydrogen storage device with hydrogen, the hydrogen storage device can supply power to the drive device through the fuel system with the stored hydrogen to drive the hydrogen fuel vehicle to move.
[0003] With the use of hydrogen energy on ships, the problem of hydrogen refueling of ships needs to be solved. The hydrogen refueling capacity of ships is large, and it is necessary to achieve large-capacity ship refueling of up to 240KG in a short time. The pressure of traditional hydrogen bundle trucks on land is 20MPa. When refueling ships, the refueling speed is slow and cannot meet the needs of large-capacity ship refueling. Summary of the invention
[0004] The technical problem to be solved by the utility model is to provide a hydrogen filling station filling system based on an inland river wharf, which can realize the rapid filling of vehicles and large-capacity ships at the same time.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a hydrogen filling station filling system based on an inland river terminal, including a hydrogen buffer tank, the hydrogen buffer tank is connected to a first-level compressor through a pipeline, the first-level compressor is connected to a first-level gas cylinder group through a pipeline, the first-level gas cylinder group is connected to a second-level compressor through a pipeline, the air outlet of the second-level compressor is connected to the second-level gas cylinder group through a pipeline, the first-level gas cylinder group and the second-level gas cylinder group are connected to a hydrogenator, and hydrogen is added to the ship or vehicle through the hydrogenator.
[0006] In the preferred solution, a long tube trailer is included, and the first-level gas cylinder group is connected to the hydrogen filling column and the second-level compressor through the first-order valve group and the pipeline, and the hydrogen filling column inflates the gas tank of the long tube trailer.
[0007] In a preferred embodiment, the secondary gas storage cylinder groups are arranged in three groups, which are arranged in a graded manner of low, medium and high pressure.
[0008] In a preferred solution, the secondary gas cylinder group is connected to the hydrogenator via a second sequence control valve group.
[0009] In a preferred embodiment, the exhaust ports of the first-stage gas cylinder group, the second-stage gas cylinder group, the first-stage compressor and the second-stage compressor are all provided with safety relief valves, and the released hydrogen flows into the relief pipe through the safety relief valves and pipelines.
[0010] In a preferred solution, the first-level gas cylinder group is a 20 Mpa gas cylinder group, and the second-level gas cylinder group is a 45 Mpa gas cylinder group.
[0011] In a preferred solution, a heat exchanger is provided on the pipeline connecting the secondary gas storage cylinder group and the hydrogenator, and the hydrogenation chiller supplies water to the heat exchanger to cool the hydrogen.
[0012] The utility model provides a hydrogen filling station filling system based on an inland wharf, which realizes hydrogen filling for vehicles by setting a 20MPa primary gas cylinder group, and realizes rapid filling for ships by setting a 45MPa secondary gas cylinder group, and can realize gas filling for ships with a capacity of 240Kg within one hour, and the filling rate is no more than 7.2kg / min. At the same time, due to rapid filling, the temperature of hydrogen rises due to the "reverse coke-soup effect", and by setting a heat exchanger and a hydrogenation chiller, the hydrogen can be cooled before filling, thereby achieving the purpose of cooling the hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0014] Figure 1 It is a schematic diagram of the structure of the utility model;
[0015] In the figure: hydrogen buffer tank 1, first-stage compressor 2, first-stage gas storage cylinder group 3, second-stage compressor 4, second-stage gas storage cylinder group 5, hydrogenator 6, long tube trailer 7, first-order valve group 8, hydrogen filling column 9, second-order control valve group 10, vent pipe 11, heat exchanger 12, hydrogenation chiller 13. DETAILED DESCRIPTION
[0016] like Figure 1 As shown, a hydrogen filling station filling system based on an inland wharf includes a hydrogen buffer tank 1, which is connected to a primary compressor 2 through a pipeline, and the primary compressor 2 uses a 20MPa diaphragm compressor. The primary compressor 2 is connected to a primary gas cylinder group 3 through a pipeline, and the primary gas cylinder group 3 is a 20Mpa gas cylinder group. The primary gas cylinder group 3 is connected to a secondary compressor 4 through a pipeline, and the secondary compressor 4 uses a 45MPa diaphragm compressor. The gas outlet of the secondary compressor 4 is connected to a secondary gas cylinder group 5 through a pipeline, and the secondary gas cylinder group 5 is a 45Mpa gas cylinder group. The primary gas cylinder group 3 and the secondary gas cylinder group 5 are connected to a hydrogenator 6, and hydrogen is added to a ship or a vehicle through the hydrogenator 6. In specific use, the hydrogenator 6 uses a ship hydrogenator with a filling pressure of 35MPa and a vehicle hydrogenator with a filling pressure of 35MPa.
[0017] The hydrogen produced by the hydrogen production equipment is transported to the hydrogen buffer tank 1 for storage, and the first-stage compressor 2 takes gas from the 1.5MPa hydrogen buffer tank 1, and the gas pressure is 1.5MPa. Since the gas source at the compressor inlet end is stabilized by the buffer tank, the gas source pressure can be ensured to be relatively stable. The 1.5MPa hydrogen can be pressurized to 20MPa. Part of the 20MPa hydrogen output by the first-stage compressor 2 can be filled into the hydrogen long tube trailer through the hydrogen filling column, and the other part can be stored in the first-stage gas cylinder group 3 in the station. The second-stage compressor 4 takes gas from the first-stage gas cylinder group 3, and the gas pressure is 5~20MPa. The 5~20MPa hydrogen is pressurized to 45MPa. The 45MPa hydrogen output by the second-stage compressor 4 is stored in the second-stage gas cylinder group 5 in the station.
[0018] In this embodiment, the secondary gas cylinder group 5 is provided with three groups, each group has 9 hydrogen cylinders, a total of 27 gas cylinders, which are arranged in a low, medium and high pressure classification manner, and are arranged in three levels. The secondary gas cylinder group 5 is connected to the hydrogenator 6 through the second sequence control valve group 10. The gas cylinder group connected to the hydrogenator 6 is controlled by the second sequence control valve group 10.
[0019] The hydrogenator first takes gas from the 45MPa III-level gas cylinder group for filling. During the process of taking gas from the 45MPa III-level gas cylinder group, if the pressure in the vehicle gas cylinder reaches 35MPa, the filling will be stopped; otherwise, when the pressure in the vehicle gas cylinder does not reach 35MPa, the pressure in the 45MPa gas cylinder group drops to the same as the pressure in the vehicle gas cylinder, then stop taking gas from the 45MPa III-level gas cylinder group, and start taking gas from the 45MPa II-level gas cylinder group to fill the vehicle. If the pressure in the vehicle gas cylinder reaches 35MPa, then stop filling; otherwise, when the pressure in the vehicle gas cylinder does not reach 35MPa, the pressure in the 45MPa gas cylinder group drops to the same as the pressure in the vehicle gas cylinder, then stop taking gas from the 45MPa II-level gas cylinder group, and start taking gas from the 45MPa I-level gas cylinder group to fill the ship / vehicle. If the pressure in the vehicle gas cylinder reaches 35MPa, then stop filling.
[0020] Preferably, a long tube trailer 7 is included, and the first-level gas cylinder group 3 is connected to the hydrogen filling column 9 and the secondary compressor 4 through the first sequence valve group 8 and the pipeline, and the hydrogen filling column 9 inflates the gas tank of the long tube trailer 7. When the gas demand in the station increases or the hydrogen production device cannot supply gas normally, it can be considered that the hydrogen is transported from the gas source to the hydrogen filling station by the long tube trailer 7 to transport high-pressure hydrogen (16-20MPa), or when there is a demand for hydrogen loading and transportation in the station, it can be loaded and transported through the hydrogen filling column 9. A long tube trailer parking space is set on site, and the hydrogen is unloaded from the long tube trailer through the hydrogen filling column 9 in the berth and transported to the hydrogen boosting system. When the hydrogen pressure in the trailer drops to the set pressure (such as 5MPa), the long tube trailer leaves the hydrogen filling station and goes to the gas source for transportation.
[0021] Preferably, the exhaust ports of the first-stage gas cylinder group 3, the second-stage gas cylinder group 5, the first-stage compressor 2 and the second-stage compressor 4 are all provided with safety relief valves, and the released hydrogen flows into the relief pipe 11 through the safety relief valves and pipelines.
[0022] Since hydrogen is flammable and explosive, a safety relief valve is installed to improve safety. When the pressure exceeds 36.25MPa, the relief valve will release the released hydrogen through the centralized relief pipe.
[0023] Preferably, a heat exchanger 12 is provided on the pipeline connecting the secondary gas cylinder group 5 and the hydrogenator 6, and a hydrogenation chiller 13 supplies water to the heat exchanger 12 to cool the hydrogen.
[0024] During the hydrogen filling process, the temperature will rise due to the negative coke-soup effect. Therefore, in order to meet the filling requirements of the hydrogen filling machine, a hydrogen filling machine chiller 13 and a heat exchanger are set up to fully pre-cool the hydrogen before filling, so as to ensure that the hydrogen temperature is not too high during the filling process.
Claims
1. A hydrogen filling station filling system based on an inland river terminal, characterized in that: The invention comprises a hydrogen buffer tank (1), wherein the hydrogen buffer tank (1) is connected to a first-stage compressor (2) through a pipeline, the first-stage compressor (2) is connected to a first-stage gas cylinder group (3) through a pipeline, the first-stage gas cylinder group (3) is connected to a second-stage compressor (4) through a pipeline, the gas outlet of the second-stage compressor (4) is connected to a second-stage gas cylinder group (5) through a pipeline, the first-stage gas cylinder group (3) and the second-stage gas cylinder group (5) are connected to a hydrogenator (6), hydrogen is added to a ship or a vehicle through the hydrogenator (6), a heat exchanger (12) is provided on the pipeline connecting the second-stage gas cylinder group (5) and the hydrogenator (6), and a hydrogenation water chiller (13) supplies water to the heat exchanger (12) to cool the hydrogen.
2. A hydrogen filling station filling system based on an inland river terminal according to claim 1, characterized in that: The invention comprises a long tube trailer (7), a first-level gas cylinder group (3) connected to a hydrogen filling column (9) and a second-level compressor (4) via a first-order valve group (8) and a pipeline, and the hydrogen filling column (9) inflates the gas storage tank of the long tube trailer (7).
3. A hydrogen filling station filling system based on an inland river terminal according to claim 1, characterized in that: The secondary gas storage cylinder groups (5) are arranged in three groups, which are arranged in a graded manner of low, medium and high pressure.
4. The hydrogen filling station filling system based on an inland river terminal according to claim 1 is characterized in that: The secondary gas storage cylinder group (5) is connected to the hydrogenator (6) via a second sequence control valve group (10).
5. The hydrogen filling station filling system based on an inland river terminal according to claim 1, characterized in that: The exhaust ports of the first-stage gas cylinder group (3), the second-stage gas cylinder group (5), the first-stage compressor (2) and the second-stage compressor (4) are all provided with safety relief valves, and the released hydrogen flows through the safety relief valves and pipelines to the relief pipe (11).
6. The hydrogen filling station filling system based on an inland river terminal according to claim 1 is characterized in that: The first-level gas cylinder group (3) is a 20 Mpa gas cylinder group, and the second-level gas cylinder group (5) is a 45 Mpa gas cylinder group.