PEM system-based oxygen energy dispatching self-powered device

Abstract

The utility model belongs to the technical field of PEM hydrogen production resource recycling, and particularly relates to an oxygen energy dispatching self-powered device based on a PEM system, which comprises a fluid high-pressure buffering device, an oxygen discharging pipeline of a PEM electrolytic hydrogen production system and a power supply device, the electricity storage device is electrically connected with a power supply system of the PEM electrolytic hydrogen production system, and the electricity storage device is also electrically connected with a turbine power generation device; an output end pipeline of the fluid high-pressure buffering device communicates with the turbine power generation device through a second fluid control valve. High-pressure oxygen generated by the PEM hydrogen production system is stored, controllable emission of the high-pressure oxygen is utilized to drive a turbine of the turbine power generation device to rotate, so that the generator in shaft connection with the turbine power generation device operates to generate power, and finally, the power storage device electrically connected with the turbine power generation device is used for storing power. And auxiliary power supply is provided for operation of the PEM electrolytic hydrogen production system, so that energy consumption is effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of PEM hydrogen production resource reuse technology, specifically relating to an oxygen energy dispatching self-powered device based on a PEM system. Background Technology

[0002] The existing PEM water electrolysis hydrogen production produces oxygen as a byproduct. Most of the 99.5% pure byproduct oxygen is emitted as waste gas, and only 3% is recycled for medical or chemical use. Its energy value has not been explored.

[0003] Therefore, based on the high-pressure oxygen generated by the PEM water electrolysis hydrogen production system, this utility model provides an oxygen energy dispatching self-powered device based on the PEM system. By using the high-pressure oxygen to drive the turbine of the turbine generator to rotate, the generator can generate electricity, and finally the electrical energy can be applied to the PEM water electrolysis hydrogen production system. Utility Model Content

[0004] To achieve the above objectives, the present invention provides the following technical solution: an oxygen energy dispatching self-powered device based on a PEM system, comprising: a high-pressure fluid buffer device whose input pipeline is connected to the oxygen discharge pipeline of the PEM electrolysis hydrogen production system via a fluid control valve, and an energy storage device electrically connected to the power supply system of the PEM electrolysis hydrogen production system, wherein the energy storage device is also electrically connected to a turbine generator.

[0005] The output pipeline of the high-pressure fluid buffer device is connected to the turbine generator through a fluid control valve, so that the high-pressure fluid discharged through the high-pressure fluid buffer device drives the turbine generator.

[0006] Preferably, it also includes a safety pipeline disposed between the fluid control valve two and the fluid high-pressure buffer device, and a fluid control valve three connected to the end of the safety pipeline.

[0007] Preferably, the fluid control valve one, the fluid control valve two, and the fluid control valve three are all solenoid valves.

[0008] Preferably, the fluid control valve is a one-way valve.

[0009] Preferably, a compression device is provided between the fluid control valve and the oxygen discharge pipeline of the PEM electrolysis hydrogen production system, and a bypass pipeline is provided in parallel with the compression device on the pipeline, and a one-way valve is provided on the bypass pipeline.

[0010] Preferably, the compression device is a multi-stage reciprocating compressor.

[0011] Preferably, the compression device is a three-stage reciprocating compressor.

[0012] Preferably, the top of the fluid high-pressure buffer device is equipped with a safety valve, a rupture disc, and a pressure sensor that is linked to the compression device.

[0013] Preferably, the energy storage device is a lithium battery.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention stores the high-pressure oxygen produced by the PEM hydrogen production system, and then uses its controlled emissions to drive the turbine of the turbine generator to rotate, thereby enabling the generator connected to its shaft to operate and generate electricity. Finally, the electricity is stored through an energy storage device electrically connected to the turbine generator to provide auxiliary power for the operation of the PEM electrolysis hydrogen production system, thus effectively saving energy consumption. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present utility model.

[0019] In the diagram: 1. PEM electrolysis hydrogen production system; 21. Compression unit; 22. Bypass pipeline; 3. Fluid control valve one; 4. Fluid high pressure buffer device; 5. Fluid control valve two; 6. Turbine generator; 7. Energy storage device; 8. Safety pipeline; 9. Fluid control valve three. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1:

[0022] This utility model relates to an oxygen energy dispatching self-powered device based on a PEM system, such as... Figure 1As shown, it includes: a high-pressure fluid buffer device 4 whose input pipeline is connected to the oxygen discharge pipeline of the PEM electrolysis hydrogen production system 1 via a fluid control valve 3, and an energy storage device 7 electrically connected to the power supply system of the PEM electrolysis hydrogen production system 1. The energy storage device 7 is also electrically connected to a turbine generator 6. The output pipeline of the high-pressure fluid buffer device 4 is connected to the turbine generator 6 via a fluid control valve 5.

[0023] Among them, fluid control valve 3 is a one-way valve. High-pressure oxygen generated by PEM electrolysis hydrogen production system 1 enters the discharge pipeline and is stored in the high-pressure fluid buffer device 4 through fluid control valve 3. The one-way valve design prevents oxygen from flowing back into PEM electrolysis hydrogen production system 1 and causing damage to the system.

[0024] The turbine generator 6 includes, but is not limited to, a relatively small outdoor wind turbine, which is electrically connected to the energy storage device 7. The discharge pipe end of the high-pressure fluid buffer device 4 is axially or radially positioned relative to the blades of the turbine generator 6. When high-pressure oxygen is discharged from the high-pressure fluid buffer device 4, it creates axial or radial flow on the blades of the turbine generator 6, causing the blades to rotate. This, in turn, generates electricity within the turbine generator 6, which is then fed into the energy storage device 7, such as a lithium battery, for energy storage. The energy storage device 7 can provide auxiliary power for the operation of the PEM electrolysis hydrogen production system 1, such as for sensors and lighting systems, thereby achieving energy savings for the entire hydrogen production system. Pressure gauges and safety valves can be installed on the high-pressure fluid buffer device 4 to improve safety.

[0025] Furthermore, a safety pipeline 8 is provided between the fluid control valve 2 5 and the fluid high-pressure buffer device 4, and a fluid control valve 3 9 is connected to the end of the safety pipeline 8. Through the installation of the safety pipeline 8, high-pressure oxygen can be discharged under special and necessary circumstances based on the operating status of the fluid high-pressure buffer device 4 and the entire hydrogen production system, thereby improving the safety and stability of the entire system operation.

[0026] It should be noted that fluid control valve 1 (3), fluid control valve 2 (5), and fluid control valve 3 (9) can all be, but are not limited to, solenoid valves. The on / off and coordinated operation of each pipeline can be achieved through remote control of the solenoid valves.

[0027] Example 2:

[0028] Because the oxygen produced by the PEM electrolysis hydrogen production system 1 has limited pressure, especially in some small hydrogen production systems, the pressure stored in the fluid high-pressure buffer device 4 is limited and cannot effectively act on the turbine power generation device 6. Sometimes, it cannot efficiently enter the fluid high-pressure buffer device 4 through its own pressure difference.

[0029] Therefore, this utility model provides a second embodiment, such as... Figure 2 As shown, the only difference from the above embodiment 1 is that: a compression device 21 is also provided between the fluid control valve 3 and the oxygen discharge pipeline of the PEM electrolysis hydrogen production system 1, and a bypass pipeline 22 is provided in parallel with the compression device 21 on the pipeline. An electrically controlled check valve is provided on the bypass pipeline 22, and a rupture disc is provided on the top of the fluid high pressure buffer device 4, as well as a pressure sensor linked to the compression device 21.

[0030] To improve efficiency and safety, the compression unit 21 employs a multi-stage piston compressor, such as a three-stage piston compressor. Furthermore, the pressure sensor, compression unit 21, and various fluid control valves can be remotely controlled via a PLC connection to the high-pressure fluid buffer unit 4.

[0031] Under normal conditions, the compressor 21 can be stopped, and the oxygen, under its own pressure, flows through the bypass pipe 22 into the high-pressure fluid buffer device 4. When the pressure difference between the high-pressure fluid buffer device 4 and the PEM electrolysis hydrogen production system 1 gradually equalizes (this can be determined by the pressure sensor pressure and the set threshold controlled by the PLC), the bypass pipe 22 is closed via PLC control, and the compressor 21 is started. The compressor 21 pressurizes the oxygen and forces it into the high-pressure fluid buffer device 4 for storage, thereby increasing the pressure within the high-pressure fluid buffer device 4 to better serve the turbine generator 6. When the pressure within the high-pressure fluid buffer device 4 reaches the set maximum threshold, the compressor 21 can be shut down via PLC control.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An oxygen energy based scheduling self-powered device based on a PEM system, characterized in that, include: The input pipeline is connected to the oxygen discharge pipeline of the PEM electrolysis hydrogen production system (1) via a fluid control valve (3), and the energy storage device (7) is electrically connected to the power supply system of the PEM electrolysis hydrogen production system (1). The energy storage device (7) is also electrically connected to a turbine generator (6). The output pipeline of the high-pressure fluid buffer device (4) is connected to the turbine generator (6) through the fluid control valve (5) so that the high-pressure fluid discharged through the high-pressure fluid buffer device (4) drives the turbine generator (6) to operate.

2. The oxygen energy scheduling self-powered device based on a PEM system according to claim 1, characterized in that: It also includes a safety pipeline (8) disposed between the fluid control valve 2 (5) and the fluid high pressure buffer device (4), and a fluid control valve 3 (9) connected to the end of the safety pipeline (8).

3. The oxygen energy scheduling self-powered device based on a PEM system according to claim 2, characterized in that: The fluid control valve one (3), the fluid control valve two (5) and the fluid control valve three (9) are all solenoid valves.

4. The oxygen energy scheduling self-powered device based on a PEM system according to claim 3, characterized in that: The fluid control valve (3) is a one-way valve.

5. A self-powered oxygen energy dispatching device based on a PEM system according to any one of claims 1-4, characterized in that: A compression device (21) is provided between the fluid control valve (3) and the oxygen discharge pipeline of the PEM electrolysis hydrogen production system (1), and a bypass pipeline (22) is provided in parallel with the compression device (21) on the pipeline. A one-way valve is provided on the bypass pipeline (22).

6. The oxygen energy scheduling self-powered device based on a PEM system according to claim 5, characterized in that: The compression device (21) is a multi-stage piston compressor.

7. A self-powered oxygen energy dispatching device based on a PEM system according to claim 6, characterized in that: The compression device (21) is a three-stage piston compressor.

8. The oxygen energy based scheduling self-powered device of claim 5, wherein: The top of the fluid high-pressure buffer device (4) is equipped with a safety valve, a rupture disc, and a pressure sensor that is linked to the compression device (21).

9. The oxygen energy scheduling self-powered device based on a PEM system according to claim 1, characterized in that: The energy storage device (7) is a lithium battery.

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