Dual-channel solid hydrogen storage single-tube hydrogen absorption and desorption test platform

Abstract

The utility model belongs to the technical field of solid hydrogen storage test systems, and particularly relates to a double-channel solid hydrogen storage single-tube hydrogen absorption and desorption test platform. According to the technical scheme, the double-channel solid hydrogen storage single-tube hydrogen absorption and desorption test platform comprises a hydrogen cylinder, the hydrogen cylinder is connected with a hydrogen busbar through a pipeline, the hydrogen busbar is connected with a gas inlet pipeline, the other end of the gas inlet pipeline is connected with a plurality of hydrogen pipeline systems, and the other ends of the hydrogen pipeline systems are connected with heat exchange jackets. A hydrogen storage single pipe is mounted in the heat exchange jacket; the hydrogen pipeline system is provided with a hydrogen flow control meter and a pressure reducing valve; the heat management system comprises a hot water system and a cold water system, and the hot water system and the cold water system are respectively connected with the plurality of heat exchange jackets. The utility model provides a double-channel solid hydrogen storage single-tube hydrogen absorption and desorption test platform.

Description

TECHNICAL FIELD

[0001] The utility model belongs to solid hydrogen storage test system technical field, especially related to a double -channel solid -state hydrogen storage single -tube hydrogen absorption and release test platform. BACKGROUND

[0002] In the hydrogen energy industry chain, hydrogen storage and transportation is an essential link for the development of hydrogen energy industry, and the continuous expansion of the hydrogen energy market will promote the rapid development of the midstream hydrogen storage and transportation. At present, the hydrogen storage and transportation link accounts for about 30% to 40% of the total cost of hydrogen, and with the increasing demand for hydrogen energy cost reduction, the development of low-cost and high-safety hydrogen storage and transportation technology will become a key breakthrough point in the hydrogen energy industry chain.

[0003] In the hydrogen storage and transportation mode, solid-state hydrogen storage usually works at near room temperature and near normal pressure, has the advantages of mild hydrogen absorption and release conditions, high volume hydrogen storage density, good safety, long cycle life, etc., and has been demonstrated in related projects in the fields of energy storage, power generation, chemical industry and transportation.

[0004] Metal hydride and heat conducting agent are usually in the form of particles, flakes or briquettes to form a hydrogen storage bed body filled in a solid-state hydrogen storage tank. At present, most of the large-scale industrial solid-state hydrogen storage devices are mainly columnar devices, and the single tube is the smallest hydrogen storage unit. The hydrogen absorption and release characteristics of the hydrogen storage single tube are subject to the hydrogen absorption and release thermodynamic / dynamic performance of the hydrogen storage material, the heat and mass transfer performance of the hydrogen storage bed body and the hydrogen storage single tube, and also determine the hydrogen working condition of the solid-state hydrogen storage single tube in the target scene. Therefore, it is particularly important to test the hydrogen absorption and release performance of the hydrogen storage single tube under different temperatures and pressures.

[0005] The existing test platform has small measurement scale and low precision. Most of the existing solid-state hydrogen storage test systems are used to measure the hydrogen absorption and release PCT curve of hydrogen storage alloy materials, and can complete the exploration of the thermodynamic / dynamic properties and cycle life of the materials themselves, but the above performance test system has small volume and heat management system scale for the reaction kettle of the filling material, and cannot record the hydrogen absorption and release characteristics of the hydrogen storage single tube under the actual working condition. UTILITY MODEL CONTENT

[0006] In order to solve the above problems existing in the prior art, the purpose of the utility model is to provide a double-channel solid-state hydrogen storage single-tube hydrogen absorption and release test platform.

[0007] The technical scheme adopted by the utility model is:

[0008] The utility model provides a kind of double-channel solid-state hydrogen storage single pipe hydrogen absorption and release test platform, including hydrogen cylinder, hydrogen cylinder is connected with hydrogen busbar by pipeline, hydrogen busbar is connected with inlet pipeline, the other end of inlet pipeline is connected with several hydrogen pipeline systems, the other end of hydrogen pipeline system is connected with heat exchange jacket, and hydrogen storage single pipe is installed in heat exchange jacket;The hydrogen pipeline system is provided with hydrogen flow control meter and pressure reducing valve;It further includes thermal management system, and thermal management system includes hot water system and cold water system, and hot water system and cold water system are connected with several heat exchange jackets respectively.

[0009] The utility model discloses a kind of double-channel solid-state hydrogen storage single pipe hydrogen absorption and release test platform, including hydrogen cylinder, hydrogen cylinder is connected with hydrogen busbar by pipeline, hydrogen busbar is connected with inlet pipeline, the other end of inlet pipeline is connected with several hydrogen pipeline systems, the other end of hydrogen pipeline system is connected with heat exchange jacket, and hydrogen storage single pipe is installed in heat exchange jacket;The hydrogen pipeline system is provided with hydrogen flow control meter and pressure reducing valve;It further includes thermal management system, and thermal management system includes hot water system and cold water system, and hot water system and cold water system are connected with several heat exchange jackets respectively.

[0010] The utility model discloses a kind of double-channel solid-state hydrogen storage single pipe hydrogen absorption and release test platform, including hydrogen cylinder, hydrogen cylinder is connected with hydrogen busbar by pipeline, hydrogen busbar is connected with inlet pipeline, the other end of inlet pipeline is connected with several hydrogen pipeline systems, the other end of hydrogen pipeline system is connected with heat exchange jacket, and hydrogen storage single pipe is installed in heat exchange jacket;The hydrogen pipeline system is provided with hydrogen flow control meter and pressure reducing valve;It further includes thermal management system, and thermal management system includes hot water system and cold water system, and hot water system and cold water system are connected with several heat exchange jackets respectively.

[0011] The utility model discloses a kind of double-channel solid-state hydrogen storage single pipe hydrogen absorption and release test platform, including hydrogen cylinder, hydrogen cylinder is connected with hydrogen busbar by pipeline, hydrogen busbar is connected with inlet pipeline, the other end of inlet pipeline is connected with several hydrogen pipeline systems, the other end of hydrogen pipeline system is connected with heat exchange jacket, and hydrogen storage single pipe is installed in heat exchange jacket;The hydrogen pipeline system is provided with hydrogen flow control meter and pressure reducing valve;It further includes thermal management system, and thermal management system includes hot water system and cold water system, and hot water system and cold water system are connected with several heat exchange jackets respectively.

[0012] As a preferred scheme of the utility model, the hydrogen pipeline system includes hydrogen pipeline, the hydrogen pipeline is connected between inlet pipeline and heat exchange jacket, the hydrogen pipeline is connected with diffusion pipe and pressure reducing valve, the hydrogen pipeline is also connected with hydrogen flow control meter by pipeline, and the hydrogen flow control meter is located between diffusion pipe and pressure reducing valve;The other end of hydrogen flow control meter is divided into two ways, one way is connected to the side of pressure reducing valve on hydrogen pipeline close to heat exchange jacket, the other way is connected to diffusion pipe, and back pressure valve is connected on the pipeline between hydrogen flow control meter and diffusion pipe.

[0013] Back pressure valve is used to simulate actual hydrogen supply scene under different hydrogen pressure.Diffusion pipe is used to detect hydrogen flow in the process of hydrogen absorption and release, and can realize constant-flow hydrogen absorption and release.

[0014] During the hydrogen absorption process, the hydrogen gas does not pass through the pressure reducing valve, and the hydrogen gas passes through the hydrogen flow control meter to the heat exchange jacket. During the hydrogen release process, the hydrogen gas passes through the pressure reducing valve, the hydrogen flow control meter and the back pressure valve, and is discharged from the diffusion pipe. During the hydrogen absorption and release processes, the flow direction of the hydrogen gas in the hydrogen flow control meter is the same. The hydrogen flow control meter generally has a single flow direction. The special pipeline design of the utility model realizes the use of only one hydrogen flow control meter, and the flow direction of the hydrogen gas in the hydrogen flow control meter is the same during the hydrogen absorption and release processes, thereby saving cost.

[0015] As a preferred scheme of the utility model, the diffusion pipe is further connected with a safety pipeline, the safety pipeline is connected with a safety valve, and the other end of the safety pipeline is connected to a section between the pressure reducing valve and the heat exchange jacket on the hydrogen pipeline. When the hydrogen overpressure reaches the setting pressure of the safety valve during the hydrogen release process, the hydrogen can be timely discharged through the diffusion pipe (the safety pipeline connected with the safety valve).

[0016] As a preferred scheme of the utility model, the gas inlet pipeline is connected with an argon cylinder through a pipeline. The argon cylinder is connected with the entire hydrogen pipeline, and is used for pipeline purging.

[0017] As a preferred scheme of the utility model, the gas inlet pipeline is connected with a vacuum system through a pipeline. The vacuum system is connected with the entire hydrogen pipeline, and is used for pipeline evacuation.

[0018] As a preferred scheme of the utility model, the hot water system comprises a hot water tank, an electric heater is connected to the hot water tank through a pipeline, a centrifugal pump is connected to the outlet of the hot water tank through a pipeline, the other end of the centrifugal pump is connected to the inlet pipeline of the heat exchange jacket through a pipeline, and the outlet pipeline of the heat exchange jacket is connected to the inlet of the hot water tank through a pipeline; an adjusting pipeline is connected between the outlet of the centrifugal pump and the water flow meter, the other end of the adjusting pipeline is connected to the hot water tank, a regulating valve is arranged on the adjusting pipeline, is used for water flow adjustment, and a regulating valve is arranged on the outlet pipeline of the heat exchange jacket.

[0019] As a preferred scheme of the utility model, the cold water system comprises a cold water tank, a cold water unit is connected to the cold water tank through a pipeline, a centrifugal pump is connected to the outlet of the cold water tank through a pipeline, the other end of the centrifugal pump is connected to the inlet pipeline of the heat exchange jacket through a pipeline, and the outlet pipeline of the heat exchange jacket is connected to the inlet of the cold water tank through a pipeline; an adjusting pipeline is connected between the outlet of the centrifugal pump and the water flow meter, the other end of the adjusting pipeline is connected to the cold water tank, a regulating valve is arranged on the adjusting pipeline, is used for water flow adjustment, and a regulating valve is arranged on the outlet pipeline of the heat exchange jacket.

[0020] As the preferred scheme of the utility model, the number of hydrogen pipeline system and heat exchange jacket is two, the length and inner diameter of one heat exchange jacket is greater than the length and inner diameter of another heat exchange jacket, the range of hydrogen flow control meter corresponding to the longer heat exchange jacket is greater than the range of another hydrogen flow control meter, switching pipeline is connected between two hydrogen pipeline systems, needle valve is connected on switching pipeline.

[0021] The solid-state hydrogen storage single pipe test platform built by the utility model has the advantages of high measurement precision.

[0022] As the preferred scheme of the utility model, the hydrogen pipeline system and the inlet pipeline of heat exchange jacket are connected through metal hose joint.

[0023] As the preferred scheme of the utility model, pressure gauge is arranged on the hydrogen pipeline system, thermometer is arranged on the inlet pipeline and outlet pipeline of heat exchange jacket, water flow meter is arranged on the outlet pipeline of heat exchange jacket, and water flow meter is arranged on hot water system and cold water system.

[0024] The utility model has the advantages of wide range and large test scale.

[0025] 1. The utility model discloses a hydrogen pipeline, hydrogen flow control meter, pressure reducing valve, back pressure valve, switching and adjusting of cold and hot water pipeline valve, and can realize the functions of solid-state hydrogen storage single pipe in constant pressure hydrogen charging and discharging and constant flow hydrogen charging and discharging performance test.

[0026] 2. The utility model discloses a heat exchange mode commonly used in solid-state hydrogen storage device in standby power supply system / emergency power generation system / comprehensive energy supply system, and uses the scheme of flowing water to heat the solid-state hydrogen storage single pipe, so that the collected data is closer to the real working condition.

[0027] 3. The utility model discloses a double-channel solid-state hydrogen storage tank test platform built by the utility model has the advantages of wide range and large test scale.

[0028] 4. The solid-state hydrogen storage single tube test platform built by the utility model has the advantage of high measurement accuracy. The platform comprises two hydrogen flow control meters with different ranges and different accuracies and hydrogen pipelines matched with the hydrogen flow control meters. When a large solid-state hydrogen storage single tube is tested for hydrogen absorption and release, a hydrogen flow control meter with a larger range is first selected for flow monitoring, and when the hydrogen absorption and release flow decreases to a set value with reaction time, a hydrogen flow control meter with a smaller range can be selected by switching different hydrogen pipelines to realize accurate measurement of the hydrogen absorption and release flow. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a structural schematic view of the utility model.

[0030] In the figure: 1-hydrogen cylinder; 2-hydrogen busbar; 3-gas inlet pipeline; 4-hydrogen pipeline system; 5-heat exchange jacket; 6-thermal management system; 7-argon cylinder; 8-vacuum system; 9-switching pipeline; 41-hydrogen pipeline; 42-diffusion pipe; 43-pressure reducing valve; 44-hydrogen flow control meter; 45-back pressure valve; 46-safety valve; 47-metal hose joint; 61-hot water tank; 62-electric heater; 63-centrifugal pump; 64-regulating valve; 65-cold water tank; 66-cold water unit; 67-water flow meter. DETAILED DESCRIPTION

[0031] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0033] This invention aims to establish a dual-channel hydrogen absorption and desorption testing platform for solid-state hydrogen storage single-tube systems. The dual-channel structure supports simultaneous hydrogen absorption and desorption tests for two single-tube systems. The testing platform mainly includes a hydrogen source and manifold, hydrogen pipelines, a hydrogen mass flow meter, a heat exchange jacket 5, a thermal management system 6, and valve components. It aims to study the hydrogen absorption and desorption rates and cumulative hydrogen absorption and desorption in solid-state hydrogen storage containers under specified hydrogen pressure and temperature, providing a reliable reference for the study of heat and mass transfer performance and heat transfer simulation of practical solid-state hydrogen storage systems.

[0034] This invention provides hydrogen for the hydrogen absorption reaction to the solid-state hydrogen storage single tube via a hydrogen source and manifold. The hydrogen enters the solid-state hydrogen storage single tube via a hydrogen mass flow meter. During the hydrogen release process, the hydrogen from the solid-state hydrogen storage single tube passes through a pressure reducing valve 43, a hydrogen mass flow meter, and a back pressure valve 45, and then enters the vent pipe 42 for venting. The thermal management system 6 provides the cold / hot water required for the hydrogen absorption and release process to the solid-state hydrogen storage single tube. The flow rates of the cold / hot water are precisely regulated by the bypass regulating valve 64 on the main water pipe and the regulating valve 64 on the branch water pipes.

[0035] like Figure 1 As shown, the dual-channel solid-state hydrogen storage single-tube hydrogen absorption and desorption test platform of this embodiment includes a hydrogen cylinder 1, which is connected to a hydrogen manifold 2 via a pipeline. The hydrogen manifold 2 is connected to an inlet pipeline 3, and the other end of the inlet pipeline 3 is connected to two hydrogen pipeline systems 4. The other end of the hydrogen pipeline systems 4 is connected to a heat exchange jacket 5, and a hydrogen storage single tube is installed inside the heat exchange jacket 5. The hydrogen pipeline system 4 is equipped with a hydrogen flow controller 44 and a pressure reducing valve 43. It also includes a thermal management system 6, which includes a hot water system and a cold water system, and the hot water system and the cold water system are respectively connected to several heat exchange jackets 5.

[0036] The hydrogen pipeline system 4 is connected to the inlet pipe of the heat exchange jacket 5 via a metal flexible hose connector 47. The front end of the solid hydrogen storage tube is connected to the hydrogen pipeline 41 via a metal flexible hose. The hydrogen storage tube is placed in the heat exchange jacket 5, which has hot and cold water inlets and outlets and an internal support plate to ensure the stability of the hydrogen storage tube.

[0037] Argon cylinder 7 is connected to the entire hydrogen pipeline 41 for pipeline purging. Vacuum system 8 is connected to the entire hydrogen pipeline 41 for pipeline evacuation. After passing through pressure reducing valve 43, hydrogen enters the hydrogen pipeline through manifold, providing stable pressure hydrogen for the single-tube hydrogen absorption reaction of solid-state hydrogen storage.

[0038] The hydrogen pipeline system 4 comprises a hydrogen pipeline 41 connected between the gas inlet pipeline 3 and the heat exchange jacket 5, a diffusion pipe 42 and a pressure reducing valve 43 connected to the hydrogen pipeline 41, and a hydrogen flow control meter 44 connected to the hydrogen pipeline 41 through a pipeline and located between the diffusion pipe 42 and the pressure reducing valve 43.

[0039] The back pressure valve 45 is used to simulate different hydrogen pressure actual hydrogen supply scenes. The hydrogen flow control meter 44 is used to detect the hydrogen flow in the hydrogen absorption and release process, and can realize constant flow hydrogen absorption and release. A pressure gauge is connected to the hydrogen pipeline 41 and used to monitor the hydrogen pressure change in the hydrogen absorption and release process.

[0040] In the hydrogen absorption process, the hydrogen does not pass through the pressure reducing valve 43, but passes through the hydrogen flow control meter 44 to the heat exchange jacket 5. In the hydrogen release process, the hydrogen passes through the pressure reducing valve 43, the hydrogen flow control meter 44 and the back pressure valve 45, and is discharged from the diffusion pipe 42. In the hydrogen absorption and release processes, the flow direction of the hydrogen in the hydrogen flow control meter 44 is the same. The hydrogen flow control meter 44 generally has a single flow direction. The special pipeline design of the utility model realizes the use of only one hydrogen flow control meter 44, and the flow direction of the hydrogen in the hydrogen flow control meter 44 is the same in the hydrogen absorption and release processes, thereby saving cost.

[0041] The diffusion pipe 42 is further connected to a safety pipeline, the safety pipeline is connected to a safety valve 46, and the other end of the safety pipeline is connected to a section between the pressure reducing valve 43 and the heat exchange jacket 5 of the hydrogen pipeline 41. When the hydrogen overpressure reaches the set pressure of the safety valve 46 in the hydrogen release process, the hydrogen can be promptly discharged through the diffusion pipe 42 (the safety pipeline connected to the safety valve).

[0042] The thermal management system 6 is composed of a metal hose, the heat exchange jacket 5, a cold water tank 65, a hot water tank 61, an electric heater 62, a water chiller 66, a centrifugal pump 63, a water flow meter 67 and related valve assemblies. The metal hose is used to connect the hydrogen inlet and outlet of the front-end hydrogen system and the rear-end solid-state hydrogen storage single pipe. The heat exchange jacket 5 provides the required flowing cold / hot water for the hydrogen absorption and release process of the hydrogen storage single pipe, and the built-in support plate of the heat exchange jacket 5 supports the hydrogen storage single pipe. The water chiller 66 and the electric heater 62 provide cold / hot water at a specific temperature required for the hydrogen absorption and release reaction. The regulating valve 64 on the bypass close to the centrifugal pump 63 is used to adjust the cold / hot water flow of the water pipeline. The regulating valve 64 on the water branch is used to adjust the flow of the water branch. The thermometers at the front and rear ends of the heat exchange jacket 5 are used to monitor the water temperature at the front and rear ends of the water branch of the two test channels in the hydrogen absorption and release process.

[0043] Specifically, the hot water system comprises a hot water tank 61, an electric heater 62 connected to the hot water tank 61 through a pipeline, a centrifugal pump 63 connected to an outlet of the hot water tank 61 through a pipeline, and an inlet pipeline of the heat exchange jacket 5 connected to another end of the centrifugal pump 63, and an outlet pipeline of the heat exchange jacket 5 connected to an inlet of the hot water tank 61 through a pipeline; an adjusting pipeline is connected between an outlet of the centrifugal pump 63 and the water flow meter 67, another end of the adjusting pipeline is connected to the hot water tank 61, and a regulating valve 64 is arranged on the adjusting pipeline for water flow adjustment, and the regulating valve 64 is arranged on the outlet pipeline of the heat exchange jacket 5.

[0044] The cold water system comprises a cold water tank 65, a water chiller 66 connected to the cold water tank 65 through a pipeline, a centrifugal pump 63 connected to an outlet of the cold water tank 65 through a pipeline, and an inlet pipeline of the heat exchange jacket 5 connected to another end of the centrifugal pump 63, and an outlet pipeline of the heat exchange jacket 5 connected to an inlet of the cold water tank 65 through a pipeline; an adjusting pipeline is connected between an outlet of the centrifugal pump 63 and the water flow meter 67, another end of the adjusting pipeline is connected to the cold water tank 65, and a regulating valve 64 is arranged on the adjusting pipeline for water flow adjustment, and the regulating valve 64 is arranged on the outlet pipeline of the heat exchange jacket 5.

[0045] The platform is designed as a double-channel structure and has the characteristics that the two channels can simultaneously perform hydrogen absorption and release tests. Channel one is equipped with a hydrogen flow control meter 44 with a range of 50-200 SLM and an accuracy of ±1% F.S., which can meet the hydrogen absorption and release test of a solid-state hydrogen storage single pipe with a length of 1-3 m and a maximum nominal diameter of DN125, and the corresponding hydrogen branch and water branch of channel one are called branch one. Channel two is equipped with a hydrogen flow control meter 44 with a range of 10-100 SLM and an accuracy of ±1% F.S., which can meet the hydrogen absorption and release test of a solid-state hydrogen storage single pipe with a length of 0.5-1 m and a maximum nominal diameter of DN125, and the corresponding hydrogen branch and water branch of channel two become branch two. The main function of the test platform is to test the hydrogen absorption and release rate and cumulative amount of different scale solid-state hydrogen storage single pipes under different temperatures and pressures (including performance tests under different back pressure conditions, constant flow hydrogen charging and discharging, and constant pressure hydrogen charging and discharging), so as to explore the hydrogen absorption and release characteristics under actual engineering applications, mainly including the following two reactions:

[0046] Hydrogen absorption reaction: the heat management system 6 provides a certain flow of cold water with a temperature of 5-20℃, and the bus provides a hydrogen source. During the reaction process, hydrogen passes through the hydrogen branch with a hydrogen flow meter (not through the hydrogen branch with the back pressure valve 45) into the solid-state hydrogen storage single pipe, the hydrogen pressure in the hydrogen storage single pipe is increased from normal pressure to the saturation hydrogen absorption pressure, and the hydrogen absorption process is gradually completed.

[0047] Hydrogen release reaction: the heat management system 6 provides a certain flow of hot water with a temperature of 40-85 DEG C to promote the hydrogen storage single tube to release hydrogen. During the reaction, hydrogen gas is discharged from the solid-state hydrogen storage single tube through the pressure reducing valve 43, the hydrogen branch with the hydrogen flow meter and the back pressure valve 45, and from the diffusion pipe 42, until the hydrogen pressure in the solid-state hydrogen storage single tube is reduced to the hydrogen release cutoff pressure. The purpose of the hydrogen passing through the back pressure valve 45 during the hydrogen release process is to test the hydrogen release characteristics under actual hydrogen conditions.

[0048] The two hydrogen pipeline systems 4 are connected by a switching pipeline 9, and the switching pipeline 9 is connected with a needle valve.

[0049] The double-channel solid-state hydrogen storage tank test platform built by the utility model has the advantages of wide range and large test scale. The platform can meet the hydrogen absorption and release test of the solid-state hydrogen storage single tube with a length of 0.5-3 m and a maximum nominal diameter of DN125, so it is not only suitable for the test of the hydrogen storage single tube in a large-scale column tube type solid-state hydrogen storage device, but also suitable for the hydrogen absorption and release test of a portable hydrogen transportation solid-state hydrogen storage tank.

[0050] The solid-state hydrogen storage single tube test platform built by the utility model is a double-channel platform, and through the switching and adjustment of the hydrogen pipeline, the hydrogen flow control meter 44, the pressure reducing valve 43, the back pressure valve 45 and the cold and hot water pipeline valve, the functions of the solid-state hydrogen storage single tube in the constant-pressure hydrogen charging and discharging performance test and the constant-flow hydrogen charging and discharging performance test can be realized. In addition, the platform has the advantage that the hydrogen absorption and release test can be carried out simultaneously in the two channels, and the utilization rate of the heat management system 6 is improved.

[0051] The solid-state hydrogen storage single tube test platform built by the utility model has the advantage of high measurement accuracy. The platform includes two hydrogen flow control meters 44 with different ranges and accuracies and hydrogen pipelines 41 matched therewith. When a large solid-state hydrogen storage single tube is tested for hydrogen absorption and release, a hydrogen flow control meter 44 with a larger range is first selected for flow monitoring. When the hydrogen absorption and release flow decreases to a set value with the reaction time, a small-range hydrogen flow control meter 44 can be selected by switching different hydrogen pipelines 41, so as to realize accurate measurement of the hydrogen absorption and release flow.

[0052] Most of the test platforms in the prior art use water bath or electric heating for heat exchange. In order to be closer to the heat exchange mode commonly used in the solid-state hydrogen storage device of the standby power supply system / emergency power generation system / comprehensive energy supply system, the utility model uses a flowing water scheme to heat the solid-state hydrogen storage single tube, so that the collected data is closer to the real working condition.

[0053] Embodiment:

[0054] The solid-state hydrogen storage single tube involved in the embodiment can adopt rare earth type (AB5 type), titanium-iron type (AB type), titanium-manganese type (AB2 type), vanadium-based solid solution (BCC type) and other new types of metal hydride; the filling state of the hydrogen storage bed body can be granular, flaky or briquetted.

[0055] In the embodiment, the electric valve and the hydrogen flow control meter 44 can be remotely controlled through PLC and related software, and the hydrogen absorption and release flow can be remotely set; the range of the hydrogen flow control meter 44 on the branch one and the branch two matches the rated hydrogen absorption and release flow of the solid-state hydrogen storage single tube of different sizes and different scales.

[0056] Taking the AB2 type solid-state hydrogen storage single tube with a length of 2 m and DN125 as an example, the hydrogen absorption and release performance test of the hydrogen storage single tube is carried out using the above-mentioned hydrogen absorption and release test platform of the solid-state hydrogen storage single tube, mainly including the following steps:

[0057] 1) Fix the solid-state hydrogen storage single tube on the support plate inside the heat exchange jacket 5 and seal the heat exchange jacket 5, and connect the hydrogen storage single tube bottle port valve with the hydrogen branch pipeline one through a metal hose;

[0058] 2) Open the solid-state hydrogen storage single tube bottle port valve to connect with the hydrogen pipeline, open the vacuum pump and the vacuum gauge, and vacuumize for 0.5 h to a vacuum degree below 10 Kpa;

[0059] 3) Close the vacuum pump and the vacuum gauge, and use the hydrogen manifold 2 to supply hydrogen to the hydrogen pipeline 41 and the hydrogen storage single tube to 0.2 MPa;

[0060] 4) Repeat the above vacuumizing and hydrogen supplying steps three times, and the last time is to supply hydrogen to normal pressure;

[0061] 5) Constant pressure hydrogen absorption: cool the cold water in the cold water tank 65 to the required temperature of the hydrogen absorption reaction through the cold water chiller 66, open the cold water inlet valve and the cold water outlet valve of the water branch one, open the centrifugal pump 63, adjust the cold water flow of the water branch one through the electric valve 64 and the branch manual valve 64, monitor the water flow of the branch one through the water flow meter 67, and monitor the inlet and outlet cold water temperature through the thermometers at the front and rear ends of the heat exchange jacket 5. On the hydrogen pipeline 41, the hydrogen absorption pressure is set by using the pressure reducing valves 43 of the two branches, and the hydrogen with constant pressure is supplied to the branch one and the solid-state hydrogen storage single tube until the entire hydrogen absorption reaction is completed. The hydrogen flow during the hydrogen absorption reaction is monitored through the hydrogen flow control meter 44 of the hydrogen branch one;

[0062] 6) Constant pressure hydrogen release: Set back pressure condition through back pressure valve 45, heat the hot water in hot water tank 61 to the temperature required by hydrogen release reaction through electric heater 62, open hot water inlet valve and hot water outlet valve of water branch one, open centrifugal pump 63, adjust hot water flow of water branch one through electric regulating valve 64 and branch manual regulating valve 64, monitor water flow of branch one through water flow meter 67, monitor temperature of inlet and outlet hot water through thermometers before and after heat exchange jacket 5; when hydrogen flow is reduced to 50-100 SLM, switch hydrogen direction through valve between branch one and branch two, hydrogen is exhausted through hydrogen branch two after hydrogen flow meter with range 10-100 SLM and back pressure valve 45. Hydrogen flow during hydrogen release reaction is monitored through hydrogen flow control meter 44 of hydrogen branch one and hydrogen branch two;

[0063] 7) After use, the single-tube hydrogen storage should be kept in a slightly positive pressure state to prevent air backflow caused by negative pressure in the single tube after temperature reduction, first close valve of hydrogen pipeline 41, and finally close valve of heat management system 6 and power supply.

[0064] The utility model is not limited to the above optional implementation, anyone can draw other various forms of product under the enlightenment of the utility model, but no matter make any change in its shape or structure, all technical schemes falling into the scope defined by the utility model claims are within the protection scope of the utility model.

Claims

1. A dual-channel solid-state hydrogen storage single-tube hydrogen absorption and desorption test platform, characterized in that: The application relates to a hydrogen pipeline system, which comprises a hydrogen cylinder (1), a hydrogen manifold (2) connected to the hydrogen cylinder (1) through a pipeline, an air inlet pipeline (3) connected to the hydrogen manifold (2), a plurality of hydrogen pipeline systems (4) connected to the other end of the air inlet pipeline (3), a heat exchange jacket (5) connected to the other end of the hydrogen pipeline system (4), and a hydrogen storage single pipe installed in the heat exchange jacket (5); the hydrogen pipeline system (4) is provided with a hydrogen flow control meter (44) and a pressure reducing valve (43); and the hydrogen pipeline system (6) further comprises a heat management system (6) which comprises a hot water system and a cold water system, and the hot water system and the cold water system are connected to the plurality of heat exchange jackets (5) respectively.

2. The dual-channel solid-state hydrogen storage single-tube hydrogen absorption and desorption test platform according to claim 1, characterized in that: The hydrogen pipeline system (4) comprises a hydrogen pipeline (41) connected between the air inlet pipeline (3) and the heat exchange jacket (5), a diffusion pipe (42) and a pressure reducing valve (43) connected to the hydrogen pipeline (41), a hydrogen flow control meter (44) connected to the hydrogen pipeline (41) through a pipeline, and the hydrogen flow control meter (44) is located between the diffusion pipe (42) and the pressure reducing valve (43); the other end of the hydrogen flow control meter (44) is divided into two paths, one path is connected to the side of the pressure reducing valve (43) on the hydrogen pipeline (41) close to the heat exchange jacket (5), and the other path is connected to the diffusion pipe (42); a back pressure valve (45) is connected to the pipeline between the hydrogen flow control meter (44) and the diffusion pipe (42).

3. The dual-channel solid-state hydrogen storage single-tube hydrogen absorption and desorption test platform according to claim 2, characterized in that: The diffusion pipe (42) is further connected to a safety pipeline, the safety pipeline is connected to a safety valve (46), and the other end of the safety pipeline is connected to a section of the hydrogen pipeline (41) between the pressure reducing valve (43) and the heat exchange jacket (5).

4. The dual-channel solid-state hydrogen storage single-tube hydrogen absorption and desorption test platform according to claim 1, characterized in that: An argon cylinder (7) is connected to the air inlet pipeline (3) through a pipeline.

5. The dual-channel solid-state hydrogen storage single-tube hydrogen absorption and desorption test platform according to claim 1, characterized in that: A vacuum system (8) is connected to the air inlet pipeline (3) through a pipeline.

6. The dual-channel solid-state hydrogen storage single-tube hydrogen absorption and desorption test platform according to claim 1, characterized in that: The hot water system comprises a hot water tank (61), an electric heater (62) connected to the hot water tank (61) through a pipeline, a centrifugal pump (63) connected to the outlet of the hot water tank (61) through a pipeline, the other end of the centrifugal pump (63) is connected to the inlet pipeline of the heat exchange jacket (5) through a pipeline, and the outlet pipeline of the heat exchange jacket (5) is connected to the inlet of the hot water tank (61) through a pipeline; the outlet of the centrifugal pump (63) is connected to an adjusting pipeline, the other end of the adjusting pipeline is connected to the hot water tank (61), an adjusting valve (64) is arranged on the adjusting pipeline, and an adjusting valve (64) is arranged on the outlet pipeline of the heat exchange jacket (5).

7. The dual-channel solid-state hydrogen storage single-tube hydrogen absorption and desorption test platform according to claim 1, characterized in that: The cold water system comprises a cold water tank (65), a cold water unit (66) connected to the cold water tank (65) through a pipeline, a centrifugal pump (63) connected to the outlet of the cold water tank (65) through a pipeline, the other end of the centrifugal pump (63) is connected to the inlet pipeline of the heat exchange jacket (5) through a pipeline, and the outlet pipeline of the heat exchange jacket (5) is connected to the inlet of the cold water tank (65) through a pipeline; the outlet of the centrifugal pump (63) is connected to an adjusting pipeline, the other end of the adjusting pipeline is connected to the cold water tank (65), an adjusting valve (64) is arranged on the adjusting pipeline, and an adjusting valve (64) is arranged on the outlet pipeline of the heat exchange jacket (5). 8.The dual-channel solid-state hydrogen storage single-tube hydrogen absorption and desorption test platform according to claim 1, characterized in that: The number of the hydrogen pipeline system (4) and the heat exchange jacket (5) is two, one of which has a length and inner diameter greater than the other, the range of the hydrogen flow control meter (44) corresponding to the longer heat exchange jacket (5) is greater than the other, a switching pipeline (9) is connected between the two hydrogen pipeline systems (4), and a needle valve is connected to the switching pipeline (9).

9. The dual-channel solid-state hydrogen storage single-tube hydrogen absorption and desorption test platform according to claim 1, characterized in that: The hydrogen pipeline system (4) is connected to the inlet pipeline of the heat exchange jacket (5) through a metal hose joint (47).

10. The dual-channel solid-state hydrogen storage single-tube hydrogen absorption and desorption test platform according to any one of claims 1-9, characterized in that: A pressure gauge is arranged on the hydrogen pipeline system (4), a thermometer is arranged on the inlet and outlet pipelines of the heat exchange jacket (5), a water flow meter (67) is arranged on the outlet pipeline of the heat exchange jacket (5), and the hot water system and the cold water system are both provided with a water flow meter (67).

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