A hydrogen release system of a magnesium-based solid-state hydrogen storage reactor

Abstract

The utility model discloses a kind of hydrogen release systems of magnesium-based solid-state hydrogen storage reaction kettle, hydrogen storage tank is placed in each placement site in reaction kettle inner chamber, and each placement site is equipped with heat exchange coil;Hydrogen release system includes hydrogen release part, temperature control part, safety protection part;Hydrogen release part includes hydrogen release main pipeline, hydrogen release automatic switch valve is equipped on hydrogen release main pipeline, vacuum extraction pipeline is connected in parallel on hydrogen release main pipeline;Temperature control part includes external heat conduction oil circulation system, flow bypass pipeline is arranged between oil inlet pipeline and oil return pipeline, heat conduction oil shunt automatic switch valve is equipped on flow bypass pipeline;Safety protection part includes reaction kettle safety valve arranged on reaction kettle, reaction kettle safety valve is connected with vent line, vent line and hydrogen release main pipeline are arranged with pressure relief bypass pipeline, automatic switch pressure relief valve is equipped on pressure relief bypass pipeline.The utility model has the advantages that it realizes the fast, efficient hydrogen release of multiple hydrogen storage tanks in reaction kettle, and ensures system safety.

Claims

1. A hydrogen release system of a magnesium-based solid-state hydrogen storage reactor, characterized in that: Each placement position in the inner cavity of the reactor contains a hydrogen storage tank. Each placement position is equipped with a heat exchange coil located around the hydrogen storage tank. The reactor is equipped with an oil inlet, an oil outlet, a venting port, a reactor pressure transmitter port, and a reactor temperature transmitter port. Oil is supplied to each set of heat exchange coils in the reactor through the oil inlet, and the oil in each set of heat exchange coils is discharged through the oil outlet. The hydrogen release system includes a hydrogen release section, a temperature control section, and a safety protection section. The hydrogen release section includes a hydrogen release main pipeline. The inlet end of the hydrogen release main pipeline is connected to the gas release port of the reactor. Along the gas flow direction, the hydrogen release main pipeline is equipped with an automatic hydrogen release switch valve (1-8) and a hydrogen release flow meter (1-9). A vacuum pumping pipeline is connected in parallel to a section of the hydrogen release main pipeline located downstream of the hydrogen release flow meter (1-9). Along the gas flow direction, the vacuum pumping pipeline is equipped with an automatic vacuum pumping switch valve (1-14), a vacuum gauge (1-15), and a vacuum pump (1-16). The temperature control section includes an external heat transfer oil circulation system, which includes a heat transfer oil tank with a heat transfer oil system heating rod (3-1) inside. The outlet of the heat transfer oil tank is connected to the oil inlet of the reactor through an oil inlet pipe, and the inlet of the heat transfer oil tank is connected to the oil outlet of the reactor through a return oil pipe. An oil circulation pump (3-2) is installed on the oil inlet pipe near the heat transfer oil tank. A heat transfer oil system flow meter (3-7) is installed on the oil inlet pipe. A flow bypass pipe is installed across the oil inlet pipe and the return oil pipe. One end of the flow bypass pipe is connected to the oil inlet pipe and is located between the oil circulation pump (3-2) and the heat transfer oil system flow meter (3-7). A heat transfer oil diversion automatic switching valve (3-11) is installed on the flow bypass pipe. The safety protection section includes a reactor safety valve (1-3) installed on the reactor. The reactor safety valve (1-3) is connected to an external venting pipeline. A pressure relief bypass pipeline is installed across the venting pipeline and the hydrogen release main pipeline. One end of the pressure relief bypass pipeline is connected to the hydrogen release main pipeline and is located upstream of the hydrogen release automatic switch valve (1-8). An automatic switch pressure relief valve (1-11), a pressure relief valve downstream shut-off valve (1-12), and a pressure relief valve downstream check valve (1-13) are installed sequentially along the gas flow direction on the pressure relief bypass pipeline. The venting pipeline intersects with the hydrogen venting main pipeline near its end, forming an intersection point. The hydrogen venting main pipeline and the venting pipeline are located downstream of the intersection point as the hydrogen venting end section and the venting end section, respectively. The hydrogen venting end section is equipped with an automatic hydrogen filling switch valve (1-18), and the venting end section is equipped with an automatic venting switch valve (1-20). The end of the vacuuming pipeline is connected to the intersection point, and the section of the hydrogen venting main pipeline and the vacuuming pipeline connected in parallel is equipped with a hydrogen venting check valve (1-17).

2. The hydrogen release system of claim 1, wherein: The hydrogen release main pipeline is provided with a hydrogen release filter (1-4), a hydrogen heat exchanger (1-5), a hydrogen release temperature transmitter (1-6), and a hydrogen system pressure switch (1-7) in sequence along the airflow direction at the upstream position of the pressure relief bypass pipeline.

3. The hydrogen release system of claim 2, wherein: the magnesium-based solid-state hydrogen storage reactor is a hydrogen release system. The venting pipeline is equipped with a manual pressure relief bypass pipeline located upstream of the pressure relief bypass pipeline. The other end of the manual pressure relief bypass pipeline is connected to the hydrogen venting main pipeline and is located between the hydrogen system pressure switch (1-7) and the pressure relief bypass pipeline. A manual pressure relief valve (1-10) is provided on the manual pressure relief bypass pipeline.

4. The hydrogen release system of claim 1, wherein: On the oil inlet pipeline, between the oil circulation pump (3-2) and the heat transfer oil system flow meter (3-7), along the direction of heat transfer oil flow, there are sequentially installed an oil pump outlet pressure transmitter (3-3), an oil pump outlet temperature transmitter (3-4), and an oil pump outlet check valve (3-5). On the oil inlet pipeline, downstream of the heat transfer oil system flow meter (3-7), along the direction of heat transfer oil flow, there are sequentially installed a heat transfer oil main line automatic regulating valve (3-8) and a reactor inlet temperature transmitter (3-9). On the oil return pipeline, near the reactor outlet, there is a reactor outlet temperature transmitter (3-10).

5. The hydrogen release system of claim 4, wherein: the magnesium-based solid-state hydrogen storage reactor is a hydrogen release system. A heat transfer oil heat exchanger (3-6) is also provided on the oil inlet pipeline between the oil pump outlet check valve (3-5) and the heat transfer oil system flow meter (3-7). The heat transfer oil in the heat transfer oil heat exchanger (3-6) pipeline is cooled by an external cooling system.

6. The hydrogen release system of claim 4, wherein: Each placement position inside the reactor is also equipped with a cooling coil located around the hydrogen storage tank. The cooling coil and the heat exchange coil form a double helix structure that is arranged in an alternating manner. The reactor is also equipped with an inlet and an outlet. The inlet supplies chilled water to each group of cooling coils inside the reactor, and the outlet drains the water from each group of cooling coils. The inlet and outlet of the reactor are connected to an external chilled water circulation system.

7. The hydrogen release system of claim 6, wherein: the magnesium-based solid-state hydrogen storage reactor is a hydrogen release system. The external chilled water circulation system includes a chilled water tank. The outlet of the chilled water tank is connected to the inlet of the reactor via an inlet pipe. The inlet of the chilled water tank is connected to the outlet of the reactor via a return pipe. Along the water flow direction, the inlet pipe is equipped with a chilled water pump (4-1), a chilled water system check valve (4-2), a chilled water pump outlet pressure transmitter (4-3), a chilled water pump outlet temperature transmitter (4-4), and an automatic regulating valve for the reactor chilled water inlet (4-8).

8. The hydrogen release system of claim 2, wherein: the magnesium-based solid-state hydrogen storage reactor is a hydrogen release system. The refrigerant inlet and outlet of the hydrogen heat exchanger (1-5) are connected to an external chilled water circulation system, through which chilled water is circulated into the refrigerant pipe of the hydrogen heat exchanger (1-5).

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