Solid hydrogen storage tank system

Abstract

The utility model relates to a solid hydrogen storage tank system, and belongs to the technical field of using gas absorbents. The system comprises a hydrogen storage tank, a water storage tank, a first pump, a second pump and a heater, a seal head is arranged at the top of the tube pass of the hydrogen storage tank and is welded with a gas inlet and outlet forged tube which is connected with a pressure gauge and a temperature transmitter; a tube plate is fixed at the top of the hydrogen storage tank shell pass, the tube plate is connected with a tube pass barrel flange, a heat exchange tube is arranged in the hydrogen storage tank, a hydrogen storage material compressed into a cake shape is filled in the heat exchange tube, and an expansion connection tube plate is additionally attached to the upper end of the heat exchange tube through strength welding; the shell side wall of the hydrogen storage tank is provided with a water outlet and a water inlet, the water outlet is connected with a first pump, the first pump is connected with a water storage pond, the water storage pond is further connected with a second pump, the second pump is connected with the water inlet, and a heater is arranged between the water inlet and the second pump. When the solid hydrogen storage tank absorbs hydrogen, water circulates to take away heat, and when hydrogen is released, water is heated to enter the tank to provide heat, so that the reaction rate during hydrogen absorption and release is effectively improved, and the working efficiency of hydrogen absorption and release of the hydrogen storage tank is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of solid hydrogen storage tank systems, belong to in container using gas absorbent (F17C11 / 00) technical field. BACKGROUND

[0002] Hydrogen storage mainly includes gaseous hydrogen storage, cryogenic liquid hydrogen storage, compound hydrogen storage and solid hydrogen storage. Among them, high-pressure gaseous hydrogen storage is the main way of hydrogen storage at present, with the advantages of fast hydrogen charging and discharging speed and simple container structure. However, high-pressure gaseous hydrogen storage also has some shortcomings, such as low bulk density, high required pressure and low safety. The advantage of liquid hydrogen storage is its high hydrogen storage density, but its disadvantages are also obvious: high cost of liquid hydrogen device, high energy consumption in liquefaction process, and evaporation loss in use. Compound hydrogen storage uses hydrogen-containing compounds such as methanol, ammonia (NH3) and methylcyclohexane as hydrogen carriers, and extracts hydrogen through corresponding decomposition reaction. The disadvantages of this hydrogen storage method include high hydrogen release temperature, low hydrogen purity and short cycle life. Solid hydrogen storage uses metal hydride and nanomaterial as carrier to store hydrogen through chemical or physical adsorption. This method has the advantages of high hydrogen storage density, low hydrogen storage pressure, high hydrogen purity and safety, which solves the problems of high-density hydrogen storage and safe application. However, the current solid hydrogen storage technology cannot dissipate the heat released during hydrogen absorption of alloy compounds in time, nor can it provide the heat required during hydrogen release in time. If heat is not dissipated or heated in time during hydrogen absorption and release reaction, it will affect the hydrogen absorption and release efficiency.

[0003] Therefore, there is an urgent need for a solid hydrogen storage tank system that can dissipate heat and provide heat in time to improve the absorption and release efficiency. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is how to improve the hydrogen absorption and release efficiency of solid hydrogen storage tank.

[0005] The utility model discloses a technical scheme that is provided to solve the above technical problems, which is a solid-state hydrogen storage tank system, comprising a hydrogen storage tank, a water storage pool, a first pump, a second pump and a heater.

[0006] Further, the tube plate is provided with a filter screen, and the filter screen is composed of a wire screen and filter cloth.

[0007] The utility model discloses the beneficial effect is: because traditional powder solid-state hydrogen storage material is compressed into pie, and is filled in heat exchange pipe, not only has improved the heat conduction performance of heat exchange pipe, has also promoted the hydrogen purity when discharging hydrogen. BRIEF DESCRIPTION OF DRAWINGS

[0008] The solid-state hydrogen storage tank system of the utility model will be further described below in combination with the drawings.

[0009] Figure 1 It is the structure schematic diagram of example solid-state hydrogen storage tank system.

[0010] Figure 2 It is the plan view of heat exchange pipe in example solid-state hydrogen storage tank system.

[0011] In the drawing: 1, hydrogen storage tank;2, water storage pool;3, first pump;4, second pump;5, heater;6, head;7, in and out gas forge pipe;8, pressure gauge;9, temperature transmitter;10, tube plate;11, heat exchange pipe;12, water outlet;13, water inlet;14, filter screen;15, tube course cylinder flange. DETAILED DESCRIPTION

[0012] Embodiment

[0013] The solid-state hydrogen storage tank system of the utility model discloses one kind for example as shown in the figure Figure 1,2 shown, including hydrogen storage tank 1, water storage tank 2, first pump 3, second pump 4 and heater 5;The top of the tube of hydrogen storage tank 1 is provided with a head 6, the head 6 is welded with the inlet and outlet forge pipe 7, the inlet and outlet forge pipe 7 is connected with pressure gauge 8 and temperature transmitter 9 on the side;The shell side of hydrogen storage tank 1 is fixed with tube plate 10, the tube plate 10 is connected with tube flange 15 by bolt, the shell side of hydrogen storage tank 1 is provided with heat exchange pipe 11, the heat exchange pipe 11 is filled with compressed solid-state hydrogen storage alloy material, the upper end of heat exchange pipe 11 is connected with tube plate 10 by strength welding plus expansion, the connection mode of strength welding plus expansion ensures the strength and sealing of the tube structure;The shell wall of hydrogen storage tank 1 is provided with water outlet 12 and water inlet 13, the water outlet 12 is connected with the inlet of first pump 3, the outlet of first pump 3 is connected with water storage tank 2, the water storage tank 2 is also connected with the inlet of second pump 4, the outlet of second pump 4 is connected with water inlet 13, and the heater 5 is arranged between the water inlet 13 and the second pump.

[0014] Magnesium-based hydrogen storage material has the advantages of high hydrogen storage density, light weight, low cost, safety and stability and long service life, and is considered as one of the most potential solid-state hydrogen storage materials. In the field of solid-state hydrogen storage, hydrogen storage materials are usually filled in the hydrogen storage device in the form of powder, which leads to poor heat conduction and low heat transfer efficiency. The powder also leads to hydrogen entrainment phenomenon during hydrogen release, and the hydrogen purity becomes low. In order to solve this problem, the magnesium-based hydrogen storage material is compressed into a round pie shape in this embodiment, which effectively improves the heat conduction performance of the heat exchange pipe 11 and ensures the hydrogen purity during hydrogen release.

[0015] When magnesium-based hydrogen storage material absorbs hydrogen, it is an exothermic reaction, and the flow of water carries away the heat released during hydrogen absorption, which is beneficial to the forward progress of hydrogen absorption reaction. When magnesium-based hydrogen storage material releases hydrogen, it is an endothermic reaction, and the heater 5 heats the water about to enter the hydrogen storage tank 1, thereby providing the heat required for magnesium-based hydrogen storage material to release hydrogen.

[0016] The tube plate 10 is provided with a filter screen 14, which is composed of a wire mesh and a filter cloth. The superimposed action of the two not only ensures the purity of hydrogen during hydrogen release, but also prolongs the service life of the filter cloth and improves the length of filter cloth replacement.

[0017] The utility model is not limited to the above-mentioned embodiments, and any technical solution formed by equivalent replacement falls within the protection scope required by the utility model.

Claims

1. A solid-state hydrogen storage tank system comprising a hydrogen storage tank, a water storage tank, a first pump, a second pump and a heater; the top of the tube pass of the hydrogen storage tank is provided with a head, and a forge pipe for gas inlet and outlet is welded on the head, and a pressure gauge and a temperature transmitter are coupled to the side of the forge pipe for gas inlet and outlet; the top of the shell pass of the hydrogen storage tank is fixed with a tube plate, and the tube plate is coupled with a tube pass cylinder flange through bolts, characterized in that The shell of the hydrogen storage tank is internally provided with heat exchange pipes, the heat exchange pipes are filled with compressed solid hydrogen storage alloy material in the form of a cake, and the upper end of the heat exchange pipes is connected to the tube sheet by strength welding and expansion bonding; the shell wall of the hydrogen storage tank is provided with a water outlet and a water inlet, the water outlet is connected to the inlet of the first pump, the outlet of the first pump is connected to a water storage tank, the water storage tank is also connected to the inlet of the second pump, the outlet of the second pump is connected to the water inlet, and the heater is arranged between the water inlet and the second pump.

2. The solid state hydrogen storage tank system of claim 1, wherein: A filter screen is arranged on the tube sheet, and the filter screen is composed of a wire screen and a filter cloth.

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