Multi-tank hydrogen generation system for hydrogen generation by magnesium hydride

Abstract

The utility model relates to hydrogen production equipment technical field provides a kind of magnesium hydride hydrolysis hydrogen production system of multiple tank, comprising: water tank, water pump and multiple hydrolysis reaction tank;The output end of water tank is connected with the input end pipeline of water pump;The output end of water pump is connected with the pipeline of multiple hydrolysis reaction tank;And each hydrolysis reaction tank is set with micro electromagnetic valve on the connecting pipeline of water pump;The output end of each hydrolysis reaction tank is connected with hydrogen output pipe pipeline;And each hydrolysis reaction tank output end and the connecting pipeline of hydrogen output pipe are set with branch one-way valve. The output end of hydrolysis reaction tank and the connecting pipeline of hydrogen output pipe are set with pressure gauge. The utility model uses the mode of one water pump and multiple micro electromagnetic valves to reduce the use amount of water pump, simultaneously controls the water intake by controlling the opening and closing state of micro electromagnetic valve, controls the magnesium hydride hydrolysis hydrogen production reaction.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen production equipment technology, and in particular to a multi-tank magnesium hydride hydrolysis hydrogen production system. Background Technology

[0002] Most current magnesium hydride hydrolysis hydrogen production systems use a water tank to precisely pump water into the reactor via a pump and an inlet pipe. The inlet pipe has through holes on its side wall, and magnesium hydride solid fuel and temperature sensors are installed around it. The water flow rate is precisely controlled according to the hydrogen production demand, thereby controlling the hydrogen production rate, while the temperature is controlled by a cooling system.

[0003] However, when dealing with hydrogen production reactions in multiple magnesium hydride reactors, multiple pumps, valve groups, and piping systems are required, which reduces the volumetric energy density and mass energy density of the entire hydrolysis hydrogen production system. Utility Model Content

[0004] This invention primarily addresses the technical problem of reducing the volumetric and gravimetric energy density of the entire hydrolysis hydrogen production system when using multiple pumps and valve groups in the face of hydrogen production reactions in multiple magnesium hydride reaction tanks. It proposes a multi-tank magnesium hydride hydrolysis hydrogen production system that uses one water pump and multiple micro-solenoid valves to reduce the number of pumps required. Simultaneously, the water inflow is controlled by adjusting the opening and closing states of the micro-solenoid valves, thereby controlling the hydrolysis hydrogen production reaction of magnesium hydride.

[0005] This utility model provides a multi-tank magnesium hydride hydrolysis hydrogen production system, including: a water tank, a water pump and multiple hydrolysis reaction tanks;

[0006] The output end of the water tank is connected to the input end of the water pump via a pipeline;

[0007] The output end of the water pump is connected to the pipeline of multiple hydrolysis reaction tanks; and each hydrolysis reaction tank is equipped with a miniature solenoid valve on the pipeline connecting the water pump to the water pump.

[0008] The output end of each hydrolysis reactor is connected to a hydrogen output pipe; and a branch check valve is installed on the connection pipe between the output end of each hydrolysis reactor and the hydrogen output pipe.

[0009] Preferably, pressure gauges are installed on the connecting pipes between the output end of the hydrolysis reactor and the hydrogen output pipe.

[0010] Preferably, a main check valve is provided on the hydrogen output pipe.

[0011] Preferably, a flame arrester is installed on the hydrogen output pipe.

[0012] Preferably, a total flow meter is installed on the hydrogen output pipe.

[0013] Preferably, a branch flow meter is installed on the connecting pipe between the output end of the hydrolysis reactor and the hydrogen output pipe.

[0014] Preferably, a temperature sensor is installed on the hydrolysis reaction vessel.

[0015] This invention provides a multi-tank magnesium hydride hydrolysis hydrogen production system that uses one water pump and multiple miniature solenoid valves to reduce the number of water pumps required. Simultaneously, the water inflow is controlled by adjusting the opening and closing states of the miniature solenoid valves, further controlling the magnesium hydride hydrolysis hydrogen production reaction and the hydrogen production rate. This improves the volumetric energy density and gravimetric energy density of the entire hydrolysis hydrogen production system, solving the problem that existing multi-tank magnesium hydride hydrolysis hydrogen production systems require multiple water pumps for precise control. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the composition of the multi-tank magnesium hydride hydrolysis hydrogen production system provided by this utility model.

[0017] Attached reference numerals: 1. Water tank; 2. Water pump; 3. Miniature solenoid valve; 4. Hydrolysis reaction vessel; 5. Pressure gauge; 6. Branch check valve; 7. Flame arrester; 8. Total flow meter; 9. Hydrogen output pipe; 10. Main check valve. Detailed Implementation

[0018] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0019] like Figure 1 As shown in the figure, the present invention provides a multi-tank magnesium hydride hydrolysis hydrogen production system, including: a water tank 1, a water pump 2 and multiple hydrolysis reaction tanks 4.

[0020] The output end of the water tank 1 is connected to the input end of the water pump 2 via a pipeline. This invention supplies water to multiple hydrolysis reaction tanks 4 using a single water pump 2.

[0021] The output end of the water pump 2 is connected to multiple hydrolysis reaction tanks 4 via pipelines; and each hydrolysis reaction tank 4 is equipped with a miniature solenoid valve 3 on the connection pipeline between it and the water pump 2; the hydrolysis reaction tank 4 carries out a magnesium hydride hydrolysis reaction process to generate hydrogen gas. The duty cycle of the miniature solenoid valve 3 is controlled by PWM to regulate the water inflow.

[0022] The hydrogen output pipe 9 is connected to the output end of each hydrolysis reactor 4; and a branch one-way valve 6 is installed on the connection pipe between the output end of each hydrolysis reactor 4 and the hydrogen output pipe 9. The hydrogen produced by the hydrolysis reactor 4 is output through the hydrogen output pipe 9. A main one-way valve 10 is installed on the hydrogen output pipe 9; a flame arrester 7 is installed on the hydrogen output pipe 9 to ensure system safety.

[0023] A total flow meter 8 is installed on the hydrogen output pipe 9. Branch flow meters are installed on the connecting pipes between the output end of the hydrolysis reactor 4 and the hydrogen output pipe 9. The total flow meter 8 is used to measure the overall hydrogen production of the system. Each branch flow meter is used to measure the hydrogen production of each hydrolysis reactor 4.

[0024] Based on the above scheme, pressure gauges 5 are installed on the connecting pipes between the output end of the hydrolysis reaction tank 4 and the hydrogen output pipe 9 to monitor the pressure changes of each hydrolysis reaction tank 4. Temperature sensors are installed on each hydrolysis reaction tank 4 to monitor the temperature changes of each hydrolysis reaction tank 4. The water pump 2, miniature solenoid valve 3, pressure gauge 5, total flow meter 8, branch flow meters, temperature sensors, and other electrical control components can be controlled by a controller.

[0025] This invention can monitor the system operation in real time, including the amount of hydrogen produced, so as to adjust the water intake, pressure and temperature in real time according to the target hydrogen production; it can also provide an alarm when the temperature is higher than the temperature threshold, such as 450°C.

[0026] The working process of the multi-tank magnesium hydride hydrolysis hydrogen production system provided by this utility model is as follows: the water pump 2 is started and kept running, water is pumped from the water tank 1 into the pipeline, and a positive pressure is further formed in the pipeline between the water pump 2 and the micro solenoid valve 3. The water inlet of each hydrolysis reaction tank 4 is controlled by controlling the duty cycle of each micro solenoid valve 3, thereby controlling the amount of hydrogen produced by magnesium hydride hydrolysis to meet the hydrogen production requirements. At the same time, a branch one-way valve 6 is installed on the connection pipeline between the output end of each hydrolysis reaction tank 4 and the hydrogen output pipe 9 to ensure the relative independence of hydrogen production by each group of hydrolysis reaction tanks 4.

[0027] The controller generates pressure changes based on the difference between the target hydrogen production and the actual hydrogen production, and adjusts the duty cycle of the micro solenoid valves 3 in each hydrolysis reactor 4; the micro solenoid valves 3 control the water inlet flow, thereby controlling the reaction rate and hydrogen production of each hydrolysis reactor 4; the controller supports continuous monitoring and dynamic adjustment.

[0028] Those skilled in the art will understand that this utility model provides a complete system framework, which can be expanded according to actual needs, such as adding more reaction vessels, improving the control algorithm, adding more detailed sensors, etc., all of which should be within the protection scope of this utility model.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-tank magnesium hydride hydrolysis hydrogen production system, characterized in that, include: Water tank (1), water pump (2) and multiple hydrolysis reaction vessels (4); The output end of the water tank (1) is connected to the input end of the water pump (2) via a pipeline; The output end of the water pump (2) is connected to the pipeline of multiple hydrolysis reaction tanks (4); and each hydrolysis reaction tank (4) is equipped with a miniature solenoid valve (3) on the pipeline connecting the water pump (2); The output end of each hydrolysis reactor (4) is connected to the hydrogen output pipe (9); and a branch check valve (6) is installed on the connection pipe between the output end of each hydrolysis reactor (4) and the hydrogen output pipe (9).

2. The multi-tank magnesium hydride hydrolysis hydrogen production system according to claim 1, characterized in that, Pressure gauges (5) are installed on the connecting pipes between the output end of the hydrolysis reaction vessel (4) and the hydrogen output pipe (9).

3. The multi-tank magnesium hydride hydrolysis hydrogen production system according to claim 1, characterized in that, A main check valve (10) is installed on the hydrogen output pipe (9).

4. The multi-tank magnesium hydride hydrolysis hydrogen production system according to claim 1, characterized in that, A flame arrester (7) is installed on the hydrogen output pipe (9).

5. The multi-tank magnesium hydride hydrolysis hydrogen production system according to claim 4, characterized in that, A total flow meter (8) is installed on the hydrogen output pipe (9).

6. The multi-tank magnesium hydride hydrolysis hydrogen production system according to claim 5, characterized in that, Branch flow meters are installed on the connecting pipes between the output end of the hydrolysis reaction tank (4) and the hydrogen output pipe (9).

7. The multi-tank magnesium hydride hydrolysis hydrogen production system according to claim 1, characterized in that, A temperature sensor is installed on the hydrolysis reaction vessel (4).

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