Hydraulic displacement hydrogen unloading system
Through the hydraulic replacement and hydrogen unloading system, the problems of high construction costs, long unloading time and large energy consumption in the traditional hydrogen refueling station unloading method are solved, and the rapid replacement and efficient transportation of hydrogen are achieved, and the service life of the hydrogen compressor is extended. And reduce transportation costs.
Patent Information
- Application Number
- CN202421738339.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-07-22
AI Technical Summary
The hydrogen unloading method of traditional hydrogen refueling stations has problems such as high construction costs, long unloading time, and large energy consumption. In particular, the unstable intake pressure of the hydrogen compressor during operation leads to heat generation and energy consumption, which affects the service life.
The hydraulic replacement hydrogen removal system is adopted, including a hydrogen compressor and a hydraulic system, and the rapid replacement of hydrogen is achieved through the hydraulic system. The sequential control plate and high-pressure hydrogen pipeline are used to ensure the stable delivery of hydrogen, reduce the fluctuation of the intake pressure of the hydrogen compressor, and combine the liquid. Phase pipelines and control systems realize efficient hydrogen transportation.
It greatly shortens the unloading time of hydrogen, improves the unloading efficiency, reduces the manufacturing cost of hydrogen compressors, extends the service life, reduces heat generation, improves work efficiency, and effectively reduces transportation costs.
Smart Images
Figure CN222363738U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydrogen unloading, in particular to a hydraulic displacement hydrogen unloading system. Background Art
[0002] With the rapid development of hydrogen energy, hydrogen refueling stations, as an important link in the hydrogen energy industry chain, are of vital importance for their safe and efficient operation. When unloading hydrogen from a traditional hydrogen refueling station, the long-tube trailer directly uses a hydrogen compressor to fill hydrogen into the hydrogen storage bottle group at the hydrogen refueling station, and then fills it into the on-board hydrogen storage bottle through the hydrogen storage bottle group in stages.
[0003] The above-mentioned traditional hydrogen unloading method has many shortcomings, including high construction cost, long unloading time, and high operating energy consumption. For example, the high operating energy consumption defect: when the hydrogen compressor of the hydrogen refueling station is working, the intake pressure usually changes from 20Mpa to 6Mpa in a curved pressure manner, and the displacement calculation of the hydrogen compressor is based on an intake pressure of 12.5Mpa. The unstable intake pressure will generate excessive heat when the hydrogen compressor is working, and energy consumption will also increase, and the service life of the hydrogen compressor will also be affected. Utility Model Content
[0004] The utility model provides a hydraulic displacement hydrogen unloading system, which has the advantages of reducing the construction cost and energy consumption of a hydrogen filling station and improving the working efficiency of the hydrogen filling station, so as to solve the problems raised in the background technology.
[0005] In order to solve the defects of existing hydrogen unloading, such as high construction cost, long unloading time and high operating energy consumption, the utility model provides the following technical solutions: a hydraulic displacement hydrogen unloading system, comprising a hydrogen compressor and a hydraulic system, one end of the hydrogen compressor is connected to a first gas phase pipeline, the other end of the hydrogen compressor is connected to a second gas phase pipeline, the other end of the second gas phase pipeline is connected to a sequential control disk, the other end of the sequential control disk is connected to a third gas phase pipe, the other end of the third gas phase pipe is connected to a hydrogen storage bottle group, the rear end of the sequential control disk is connected to a fourth gas phase pipe, and the rear end of the fourth gas phase pipe is connected to a hydrogen filling machine.
[0006] As a preferred technical solution of the utility model, one end of the hydraulic system is connected to a liquid phase pipeline, and the liquid phase pipeline is connected to the steel cylinder of the hydrogen transport vehicle and can be filled with hydraulic medium.
[0007] As a preferred technical solution of the utility model, one end of the first gas phase pipeline is connected to the steel cylinder of the hydrogen transport vehicle, and can transport the hydrogen unloaded from the steel cylinder of the hydrogen transport vehicle.
[0008] As a preferred technical solution of the utility model, the sequence control disk can control the direction of hydrogen delivery and deliver the hydrogen to the hydrogen storage bottle group or the hydrogen filling machine in sequence.
[0009] As a preferred technical solution of the present utility model, the first gas phase pipeline, the second gas phase pipeline, the third gas phase pipeline and the fourth gas phase pipeline are all connected to a control system.
[0010] As a preferred technical solution of the present utility model, the first gas phase pipeline, the second gas phase pipeline, the third gas phase pipe and the fourth gas phase pipe are all high-pressure hydrogen pipelines.
[0011] Compared with the prior art, the utility model provides a hydraulic displacement hydrogen unloading system with the following features:
[0012] Beneficial effects:
[0013] 1. This hydraulic displacement hydrogen unloading system realizes rapid displacement of hydrogen through the hydraulic system, which greatly shortens the unloading time of hydrogen and greatly improves the hydrogen unloading efficiency. At the same time, the inlet pressure of the hydrogen compressor is stabilized at 20Mpa, and the displacement of the hydrogen compressor can be matched and designed with the displacement of the hydraulic pump in the hydraulic system, which greatly reduces the manufacturing cost of the hydrogen compressor (especially at 70Mpa hydrogen refueling stations, the hydrogen unloading process that originally required two-stage compression can now be completed with one-stage compression, and there are significant advantages in displacement and energy consumption).
[0014] 2. This hydraulic displacement hydrogen unloading system, whether it is a diaphragm or liquid-driven compressor, after the operating conditions are stable, the service life of the hydrogen compressor is extended, and the maintenance cost also has a lot of room for reduction. At the same time, the heat generated by compressing hydrogen from 20Mpa to 45Mpa or 90Mpa pressure is much lower than the heat generated by compressing 6Mpa to 45Mpa or 90Mpa pressure of the compressor at traditional hydrogen refueling stations. The working efficiency of the hydrogen compressor is greatly improved, which can control the cost and energy consumption of the supporting chiller system.
[0015] 3. This hydraulic displacement hydrogen unloading system has a hydrogen unloading rate of about 69% for ordinary long-tube trailers, and the improved trailer has a hydrogen unloading rate of up to 95%, which effectively reduces the transportation cost of hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the utility model.
[0017] In the figure:
[0018] 10. Hydrogen compressor; 20. Hydraulic system; 30. First gas phase pipeline; 40. Second gas phase pipeline; 50. Sequential control panel; 60. Third gas phase pipe; 70. Hydrogen storage bottle group; 80. Fourth gas phase pipe; 90. Hydrogen filling machine; 100. Liquid phase pipeline; 110. Control system. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figure 1 The utility model discloses a hydraulic displacement hydrogen unloading system, including a hydrogen compressor 10 and a hydraulic system 20, one end of the hydrogen compressor 10 is connected to a first gas phase pipeline 30, the other end of the hydrogen compressor 10 is connected to a second gas phase pipeline 40, the other end of the second gas phase pipeline 40 is connected to a sequence control disk 50, the other end of the sequence control disk 50 is connected to a third gas phase pipe 60, the other end of the third gas phase pipe 60 is connected to a hydrogen storage bottle group 70, the rear end of the sequence control disk 50 is connected to a fourth gas phase pipe 80, and the rear end of the fourth gas phase pipe 80 is connected to a hydrogen filling machine 90.
[0021] Specifically, one end of the hydraulic system 20 is connected to a liquid phase pipeline 100, which is connected to the steel cylinder of the hydrogen transport vehicle and can be filled with hydraulic medium. One end of the first gas phase pipeline 30 is connected to the steel cylinder of the hydrogen transport vehicle and can transport hydrogen unloaded from the steel cylinder of the hydrogen transport vehicle.
[0022] In this embodiment, the liquid phase pipeline 100 can fill the hydraulic medium (ionic liquid or similar liquid that does not pollute hydrogen) into the cylinder on the transport vehicle, and the first gas phase pipeline 30 can discharge the hydrogen in the cylinder on the transport vehicle into the hydrogen compressor 10 .
[0023] Specifically, the sequence control panel 50 can control the direction of hydrogen delivery and deliver the hydrogen to the hydrogen storage bottle group 70 or the hydrogen filling machine 90 in sequence.
[0024] In this embodiment, hydrogen is transported to the hydrogen storage bottle group 70 or the hydrogen filling machine 90 in sequence according to a preset sequence through program control.
[0025] Specifically, the first gas phase pipeline 30 , the second gas phase pipeline 40 , the third gas phase pipeline 60 , and the fourth gas phase pipeline 80 are all connected to the control system 110 .
[0026] In this embodiment, the control system 110 is connected to the first gas phase pipeline 30, the second gas phase pipeline 40, the third gas phase pipeline 60 and the fourth gas phase pipeline 80, and can monitor the hydrogen pressure, temperature and other parameters inside these gas phase pipelines in real time to ensure the safety and stability of the replacement process.
[0027] Specifically, the first gas phase pipeline 30 , the second gas phase pipeline 40 , the third gas phase pipeline 60 , and the fourth gas phase pipeline 80 are all high-pressure hydrogen pipelines.
[0028] In this embodiment, the high-pressure hydrogen pipeline can withstand a pressure of up to 70 MPa, which can ensure the stability of hydrogen transportation.
[0029] The working principle and use process of this utility model:
[0030] 1. After the hydrogen station receives the hydrogen transport vehicle, the hydraulic system 20 is used to connect the first gas phase pipeline 30 on the transport vehicle to the hydrogen compressor 10 in the hydrogen station;
[0031] 2. Start the hydraulic system 20, and use the hydraulic pump to fill the hydraulic medium (ionic liquid or similar liquid that will not contaminate hydrogen) into the steel cylinder on the transport vehicle, so that the high-pressure hydrogen in the steel cylinder is replaced, thereby achieving effective replacement of hydrogen;
[0032] 3. During the replacement process, the control system 110 can monitor the hydrogen pressure, temperature and other parameters in real time to ensure the safety and stability of the replacement process;
[0033] 4. When the hydrogen is completely replaced, the hydraulic system 20 is closed, the first gas phase pipeline 30 is disconnected, and the hydrogen unloading operation is completed.
[0034] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.
[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A hydraulic displacement hydrogen unloading system, characterized in that: The invention comprises a hydrogen compressor (10) and a hydraulic system (20), wherein one end of the hydrogen compressor (10) is connected to a first gas phase pipeline (30), the other end of the hydrogen compressor (10) is connected to a second gas phase pipeline (40), the other end of the second gas phase pipeline (40) is connected to a sequence control disk (50), the other end of the sequence control disk (50) is connected to a third gas phase pipe (60), the other end of the third gas phase pipe (60) is connected to a hydrogen storage bottle group (70), the rear end of the sequence control disk (50) is connected to a fourth gas phase pipe (80), and the rear end of the fourth gas phase pipe (80) is connected to a hydrogen filling machine (90).
2. The hydraulic displacement hydrogen unloading system according to claim 1 is characterized in that: One end of the hydraulic system (20) is connected to a liquid phase pipeline (100), and the liquid phase pipeline (100) is connected to a steel cylinder of a hydrogen transport vehicle and can be filled with hydraulic medium.
3. The hydraulic displacement hydrogen unloading system according to claim 1 is characterized in that: One end of the first gas phase pipeline (30) is connected to the steel cylinder of the hydrogen transport vehicle, and can transport the hydrogen unloaded from the steel cylinder of the hydrogen transport vehicle.
4. The hydraulic displacement hydrogen unloading system according to claim 1, characterized in that: The sequence control panel (50) can control the direction of hydrogen delivery and deliver the hydrogen to the hydrogen storage bottle group (70) or the hydrogen filling machine (90) in sequence.
5. The hydraulic displacement hydrogen unloading system according to claim 1, characterized in that: The first gas phase pipeline (30), the second gas phase pipeline (40), the third gas phase pipe (60), and the fourth gas phase pipe (80) are all connected to a control system (110).
6. The hydraulic displacement hydrogen unloading system according to claim 1, characterized in that: The first gas phase pipeline (30), the second gas phase pipeline (40), the third gas phase pipe (60), and the fourth gas phase pipe (80) are all high-pressure hydrogen pipelines.