A hydrogen purifying device for a generator

Abstract

The utility model discloses a generator hydrogen gas purification device belongs to hydrogen -cooling generator technical field, and it is including: air inlet, generator gas supply port, the purification mechanism that is connected with air inlet through pipeline, the multistage purification mechanism and the waste gas discharge port that are linked with air inlet, generator gas supply port and purification mechanism respectively, the inlet of multistage purification mechanism links with purification mechanism, and the export links with generator gas supply port, and the waste outlet links with waste gas discharge port, the multistage purification mechanism includes first purification mechanism, second purification mechanism and third purification mechanism, the utility model discloses through the active carbon adsorption of gas cooling and of purification mechanism can fully absorb carbon dioxide gas, oil steam and dust in gas, through multistage purification mechanism to the hydrogen gas of purification carries out multistage circulation purification, and the hydrogen gas is fully purified, and the problem of hydrogen gas purification long -term use attenuation of regenerative treatment and existing purification technology is solved.

Description

Technical Field

[0001] This utility model relates to a hydrogen purification and enhancement device for generators, belonging to the technical field of hydrogen-cooled generators. Background Technology

[0002] Currently, hydrogen purification in power plants commonly employs technologies such as pressure swing adsorption (PSA), water electrolysis, and artificial hydrogen replenishment and discharge. Among these, PSA is the most commonly used and mature hydrogen purification technology in industry. Depending on the types of impurities in the feed gas, the adsorbent can be selected from molecular sieves, activated carbon, activated alumina, etc.

[0003] However, some purification technologies (such as pressure swing adsorption) rely on frequent pressure cycles, requiring the adsorbent to be periodically removed from the adsorption tower for regeneration. The adsorbent regeneration process is energy-intensive, and after long-term operation, the adsorbent's performance deteriorates, necessitating periodic replacement and increasing maintenance costs. High-purity hydrogen production technologies, such as water electrolysis, consume large amounts of electricity, resulting in high overall hydrogen costs. Manual hydrogen replenishment and discharge is wasteful and labor-intensive. Therefore, existing generator-based hydrogen purification technologies face the technical challenges of declining purification accuracy over long-term use and high maintenance costs. Utility Model Content

[0004] Purpose of this utility model: The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a generator hydrogen purification and upgrading device. The device uses a purification mechanism to cool the gas and activate carbon adsorption to fully absorb carbon dioxide, oil vapor, and dust in the gas. The purified hydrogen is purified through multiple stages of purification mechanism to perform more than one cycle of purification, thus fully purifying, regenerating, and upgrading the hydrogen. This solves the problems of regeneration and long-term degradation of hydrogen purification technology in existing technologies.

[0005] To solve the above-mentioned technical problems, this utility model is implemented using the following technical solution:

[0006] A generator hydrogen purification and enhancement device, comprising:

[0007] An air inlet, a generator air supply port, a purification mechanism connected to the air inlet via a pipeline, a multi-stage purification mechanism connected to the air inlet, the generator air supply port and the purification mechanism respectively, and an exhaust outlet connected to the multi-stage purification mechanism.

[0008] The inlet of the multi-stage purification mechanism is connected to the purification mechanism, the outlet is connected to the generator air supply port, and the exhaust port is connected to the exhaust gas discharge port.

[0009] The multi-stage purification mechanism includes a first purification mechanism, a second purification mechanism, and a third purification mechanism;

[0010] The inlet and outlet of the first purification mechanism are respectively connected to the purification mechanism and the generator air supply port;

[0011] The inlet and outlet of the second purification mechanism are connected to the waste outlet and air inlet of the first purification mechanism, respectively.

[0012] The inlet and outlet of the third purification mechanism are connected to the waste outlet and air inlet of the second purification mechanism, respectively, and the waste outlet is connected to the waste gas discharge outlet. By connecting the multi-stage purification mechanisms in series, the purified hydrogen is filtered and repeatedly circulated to achieve the purpose of obtaining high-precision hydrogen.

[0013] Optionally, the purification mechanism includes a compressor connected to the air inlet via a pipe, a first manual valve disposed at the compressor outlet, a condenser connected to the outlet of the first manual valve, and an activated carbon canister connected to the outlet of the condenser.

[0014] The compressor inlet is connected to the air inlet via a second manual valve and a pneumatic valve at the hydrogen purification device inlet, and the compressor outlet is connected to the condenser gas inlet via a first manual valve.

[0015] The internal pipes of the condenser are connected to the internal chiller unit to cool the high-temperature gas input from the compressor and output the cooled gas flow to the activated carbon tank. After the gas flow is cooled, the oil vapor in the gas condenses and the dust falls and is adsorbed by the activated carbon, thereby completing the hydrogen purification.

[0016] Optionally, the purification mechanism is also connected to the exhaust port via a bypass pipe. One end of the bypass pipe is connected to the outlet of the activated carbon tank via a third manual valve, and the other end of the bypass pipe is connected to the exhaust port via a fourth manual valve. This allows the purification mechanism to directly exhaust gas to the exhaust port via the bypass pipe during maintenance, preventing adsorbed dust from entering the purification mechanism and increasing the filtration burden.

[0017] Optionally, the first purification mechanism includes a primary membrane filter connected to the activated carbon canister, a primary membrane inlet pneumatic valve and a fifth manual valve installed between the primary membrane filter and the activated carbon canister, and a sixth manual valve and a primary membrane purification gas pneumatic valve installed between the generator air supply port and the primary membrane filter.

[0018] Optionally, the second purification mechanism includes a secondary membrane filter connected to the primary membrane filter, a seventh manual valve connected between the secondary membrane filter and the primary membrane filter, an eighth manual valve connected between the secondary membrane filter and the air inlet, and a secondary membrane purification gas pneumatic valve.

[0019] Optionally, the secondary membrane filtration device is a single unit, which is connected to the first purification mechanism, the air inlet, and the third purification mechanism via a single air inlet pipe, an air outlet pipe, and a waste discharge pipe, respectively.

[0020] Optionally, there may be one or more secondary membrane filter devices, and multiple secondary membrane filter devices may be connected in parallel with the first purification mechanism, the air inlet and the third purification mechanism respectively through an appropriate number of air inlet pipes, air outlet pipes and waste discharge pipes.

[0021] Optionally, the third purification mechanism includes a tertiary membrane filter connected to the secondary membrane filter, a ninth manual valve connected between the secondary and tertiary membrane filters, a tenth manual valve connected between the tertiary membrane filter and the air inlet, a tertiary membrane purification gas pneumatic valve, and an eleventh manual valve and a waste gas discharge pneumatic valve installed between the tertiary membrane filter and the waste gas discharge outlet.

[0022] Optionally, pressure sensors are provided on the connecting pipes between the first purification unit and the activated carbon tank, and on the connecting pipes between the first purification unit and the generator air supply port, for real-time monitoring of air pressure.

[0023] Optionally, both the connecting pipe between the second purification mechanism and the air inlet and the connecting pipe between the third purification mechanism and the air inlet are equipped with airflow sensors to detect the hydrogen circulation flow rate.

[0024] Optionally, a controller is also included, which is electrically connected to a pressure sensor, a gas flow sensor, a pneumatic valve at the inlet of the hydrogen purification unit, a pneumatic valve at the first-stage membrane inlet, a pneumatic valve at the second-stage membrane purification gas inlet, a pneumatic valve at the third-stage membrane purification gas inlet, and a waste discharge pneumatic valve.

[0025] Beneficial effects: Compared with the prior art, this utility model has the following advantages:

[0026] The gas is cooled by a purification unit and adsorbed by activated carbon to fully absorb carbon dioxide, oil vapor and dust in the gas. The purified hydrogen is purified by multi-stage membrane separation and purification through a multi-stage purification unit, and the purified hydrogen is circulated more than once. The hydrogen is fully purified, purified and regenerated to obtain high-purity hydrogen and improve hydrogen recovery efficiency.

[0027] By installing a bypass pipeline between the purification unit and the exhaust outlet, the stagnant airflow can be directly discharged during the maintenance of the purification unit, avoiding the entry of dust and exhaust airflow generated during the maintenance of the activated carbon tank into the multi-stage purification unit and reducing the workload of the multi-stage purification unit.

[0028] The design of the first to eleventh manual valves allows for flexible switching of airflow direction and purification mode according to the maintenance progress of each stage of the multi-stage purification mechanism. It can isolate faulty and maintenance mechanisms separately, ensuring that the first purification mechanism can still work normally during the maintenance of the second and third purification mechanisms without shutting down the entire system. This avoids sudden changes in the gas pressure supplied to the generator and prevents the generator from suddenly shutting down. In addition, when the device is shut down for a long time, it can selectively close the purification mechanism, the exhaust port, and the manual valve from the outlet of the multi-stage purification mechanism to the generator to avoid the safety risks caused by hydrogen leakage during shutdown. Attached Figure Description

[0029] Figure 1 The diagram shown is a structural diagram of the hydrogen purification and upgrading device for generators according to this utility model.

[0030] In the diagram: 1 Compressor, 2 Condenser, 3 Activated Carbon Tank, 4 Air Inlet, 5 Generator Air Supply Port, 6 Exhaust Gas Outlet, 7 First Manual Valve, 8 Second Manual Valve, 9 Third Manual Valve, 10 Fourth Manual Valve, 11 Fifth Manual Valve, 12 Sixth Manual Valve, 13 Seventh Manual Valve, 14 Eighth Manual Valve, 15 Ninth Manual Valve, 16 Tenth Manual Valve, 17 Eleventh Manual Valve, 20 Primary Membrane Filter, 21 Secondary Membrane Filter, 22 Tertiary Membrane Filter, 23 Inlet Pneumatic Valve, 24 Primary Membrane Inlet Pneumatic Valve, 25 Secondary Membrane Purified Gas Pneumatic Valve, 26 Tertiary Membrane Purified Gas Pneumatic Valve, 27 Exhaust Pneumatic Valve, 28 Primary Membrane Purified Gas Pneumatic Valve. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention. Example

[0032] This embodiment provides a generator hydrogen purification and enhancement device, such as... Figure 1 The system includes: an air inlet 4, a generator air supply port 5, a purification mechanism, a multi-stage purification mechanism, and an exhaust gas outlet 6; wherein, the air inlet 4 is used to release gas, the generator air supply port 5 is used to receive purified gas; the purification mechanism is connected to the air inlet 4 through a pipe, the multi-stage purification mechanism is connected to the air inlet 4, the generator air supply port 5, and the purification mechanism respectively, and the exhaust gas outlet 6 is connected to the multi-stage purification mechanism.

[0033] The multi-stage purification mechanism has its inlet connected to the purification unit, its outlet connected to the generator's air supply port 5, and its exhaust port connected to the exhaust gas outlet 6. The multi-stage purification mechanism includes a first purification unit, a second purification unit, and a third purification unit. The inlet and outlet of the first purification unit are connected to the purification unit and the generator's air supply port 5, respectively. The inlet and outlet of the second purification unit are connected to the exhaust port and air inlet 4 of the first purification unit, respectively. The inlet and outlet of the third purification unit are connected to the exhaust port and air inlet 4 of the second purification unit, respectively. The exhaust port is connected to the exhaust gas outlet 6. The purification unit initially separates hydrogen and carbon dioxide, and then the purified hydrogen undergoes multi-stage filtration and repeated circulation through the series connection of the multi-stage purification units, achieving the goal of obtaining hydrogen with higher precision.

[0034] Optionally, the purification mechanism includes: compressor 1, first manual valve 7, inlet pneumatic valve 23 of hydrogen purification device, condenser 2 and activated carbon tank 3.

[0035] Compressor 1 is connected to inlet 4 via a pipe. First manual valve 7 is connected to outlet of compressor 1. Condenser 2 is connected to outlet of first manual valve 7. Activated carbon canister 3 is connected to outlet of condenser 2. Inlet of compressor 1 is connected to inlet 4 via second manual valve 8 and pneumatic valve 23 of hydrogen purification device inlet. Outlet of compressor 1 is connected to gas inlet of condenser 2 via first manual valve 7. This is used to cool the gas released from the inlet. Under low temperature conditions, hydrogen and carbon dioxide can be initially separated by condensation.

[0036] The internal pipes of condenser 2 are connected to the internal chiller unit to cool the high-temperature gas input from compressor 1 and output the cooled gas flow to activated carbon tank 3. This process adsorbs carbon dioxide molecules, oil vapor condensation, and dust from the hydrogen gas. The activated carbon adsorbs impurities such as carbon dioxide under high pressure and desorbs and regenerates under low pressure, thus purifying the hydrogen. This completes the hydrogen purification process.

[0037] Optionally, the purification unit is also connected to the exhaust port 6 via a bypass pipe. One end of the bypass pipe is connected to the outlet of the activated carbon tank 3 via a third manual valve 9, and the other end of the bypass pipe is connected to the exhaust port 6 via a fourth manual valve 10, forming a branch independent of the main process. The two ends are connected to the outlet of the activated carbon tank 3 and the exhaust port 6 respectively, forming a backup path of "purification unit → activated carbon tank 3 → exhaust gas discharge". This is used when the purification unit is under maintenance, so that the purification unit can directly exhaust gas to the exhaust port 6 through the bypass pipe, avoiding the adsorbed dust from entering the purification unit and increasing the filtration burden. At the same time, the bypass pipe also provides a gas flow path, preventing pressure buildup or vacuum formation in the system due to the isolation of the purification unit.

[0038] Optionally, the first purification mechanism includes: a primary membrane filter 20, a primary membrane inlet pneumatic valve 24, a fifth manual valve 11, a sixth manual valve 12, and a primary membrane purification gas pneumatic valve. The primary membrane filter 20 is connected to the activated carbon tank 3 and is used for primary membrane filtration of the initially separated hydrogen. The diffusion rate of hydrogen molecules in a specific membrane material is much higher than that of carbon dioxide, allowing for efficient separation through membrane separation technology. The primary membrane inlet pneumatic valve 24 and the fifth manual valve 11 are installed between the primary membrane filter 20 and the activated carbon tank 3, used to electrically and manually close the primary membrane inlet when the system pressure exceeds a set value, preventing high-pressure gas from impacting the first purification mechanism and causing equipment damage. The sixth manual valve 12 and the primary membrane purification gas pneumatic valve are installed between the generator air supply port 5 and the primary membrane filter 20. After both the sixth manual valve 12 and the primary membrane purification gas pneumatic valve are opened, a large amount of membrane-filtered hydrogen can be directly fed into the generator air supply port 5 to meet the air supply pressure requirements.

[0039] Optionally, the second purification mechanism includes: a secondary membrane filter device 21, a seventh manual valve 13, an eighth manual valve 14, and a secondary membrane purification gas pneumatic valve 25. The secondary membrane filter device 21 is connected to the primary membrane filter device 20 and is used for secondary filtration of hydrogen gas containing residual carbon dioxide. The seventh manual valve 13 is connected between the secondary membrane filter device 21 and the primary membrane filter device 20 and is used to manually control the on / off state between them. The eighth manual valve 14 and the secondary membrane purification gas pneumatic valve 25 are connected between the secondary filter device and the air inlet 4 and are used to transport the secondary filtered residual carbon dioxide gas to the extraction mechanism for further hydrogen and carbon dioxide separation and adsorption.

[0040] Optionally, there are two secondary membrane filter devices 21. The two secondary membrane filter devices 21 are connected in parallel through two air inlet pipes, two air outlet pipes, and two waste discharge pipes, and are then connected to the first purification mechanism, the air inlet 4, and the third purification mechanism, respectively. Adding two secondary membrane filter devices 21 can increase the efficiency of secondary filtration.

[0041] Optionally, the third purification mechanism includes: a three-stage membrane filter device 22, a ninth manual valve 15, a tenth manual valve 16, a three-stage membrane purification gas pneumatic valve 26, an eleventh manual valve 17, and a waste discharge pneumatic valve 27.

[0042] The tertiary membrane filter 22 is connected to the secondary membrane filter 21 and is used to perform a third filtration on the gas filtered in the second stage, further purifying the hydrogen. A ninth manual valve 15 is connected between the secondary membrane filter 21 and the tertiary membrane filter 22, allowing manual control of the flow between them. A tenth manual valve 16 and a tertiary membrane purification gas pneumatic valve 26 are connected between the tertiary membrane filter 22 and the air inlet 4, used for manual and electric control of the flow between them. An eleventh manual valve 17 and a waste gas discharge pneumatic valve 27 are installed between the tertiary membrane filter 22 and the waste gas discharge port 6, used for manual and electric control of the flow between them.

[0043] In this embodiment, by designing manual and electric valves for coordinated control on key pipelines, the absolute control of manual operation is retained while leveraging the precision and efficiency of electric control, which can significantly improve the flexibility, safety and automation level of system operation.

[0044] Optionally, pressure sensors are installed on the connecting pipes between the first purification unit and the activated carbon tank 3 and the connecting pipes between the first purification unit and the generator air supply port 5 to monitor the air pressure in real time. The controller then adjusts the opening of the purification unit and related manual and electric valves to prevent insufficient air supply from the generator and excessive air pressure from impacting the filter membrane equipment of the first purification unit.

[0045] Optionally, airflow sensors are installed on the connecting pipes of the second purification mechanism and the air inlet 4, and on the connecting pipes of the third purification mechanism and the air inlet 4, to detect the hydrogen circulation flow rate. The controller then adjusts the opening and closing of the relevant manual and electric valves in the second purification mechanism to deal with abnormal airflow caused by filter membrane blockage or damage, and to promptly detect and cut off the fault point.

[0046] Optionally, a controller is also included. The controller is electrically connected to the pressure sensor, the airflow sensor, the pneumatic valve 23 at the inlet of the hydrogen purification device, the pneumatic valve 24 at the inlet of the first-stage membrane, the pneumatic valve 25 at the inlet of the second-stage membrane purified gas, the pneumatic valve 26 at the inlet of the third-stage membrane purified gas, and the exhaust pneumatic valve 27. In this embodiment, a closed-loop control system is constructed by electrically connecting the pressure sensor, the airflow sensor, and multiple pneumatic valves to realize real-time monitoring and precise control of pressure, flow rate, and valve action.

[0047] Working principle:

[0048] When the device is started, ensure that all drain and sampling doors inside the device are closed, and that all manual valves from the first to the eleventh manual valves are open except for the fourth manual valve 10 which is closed. Close the exhaust gas emission device. After pressing the power-on button, the operator sends an electrical signal to the controller to open the compressor 1, the hydrogen purification device inlet pneumatic valve 23, the primary membrane inlet pneumatic valve 24, the secondary membrane purified gas pneumatic valve 25, the tertiary membrane purified gas pneumatic valve 26, and the exhaust pneumatic valve 27. This causes the purification mechanism and the multi-stage purification mechanism to start working and supply hydrogen to the generator.

[0049] During normal operation, the hydrogen and carbon dioxide mixture enters the condenser 2 through the inlet 4, passing sequentially through the second manual valve 8, the pneumatic valve 23 at the inlet of the hydrogen purification device, the compressor 1, and the first manual valve 7. The condenser 2 cools the mixture, causing the carbon dioxide to condense. The mixture then passes through the activated carbon canister 3, which adsorbs the condensed carbon dioxide, oil vapor, and dust, resulting in preliminarily purified hydrogen. Since some carbon dioxide remains in the purified hydrogen, it undergoes progressive and circulating filtration through a multi-stage purification mechanism.

[0050] The initially purified hydrogen enters the first purification unit through the third manual valve 9. The hydrogen purified by the first-stage membrane filter 20 in the first purification unit undergoes first-stage membrane filtration to obtain highly efficient separated hydrogen. It then enters the generator gas supply port 5 directly through the sixth manual valve 12 and the first-stage membrane purification pneumatic valve 28 for direct use. The gas containing residual carbon dioxide undergoes secondary filtration through the inlet of the second purification unit. The carbon dioxide filtered out in the second filtration enters the inlet 4 for further purification. The remaining gas enters the third purification unit through the exhaust port of the second purification unit. The third purification unit performs final filtration and exhaust. The gas filtered at the end also enters the inlet 4 for further purification and circulation. The remaining gas enters the exhaust port 6 through the exhaust port of the third purification unit.

[0051] The controller can also time the single-run time of the device, and control the compressor 1, hydrogen purification unit inlet pneumatic valve 23, primary membrane inlet pneumatic valve 24, secondary membrane purified gas pneumatic valve 25, tertiary membrane purified gas pneumatic valve 26, and exhaust pneumatic valve 27 to open and close periodically.

[0052] When the time for a single operation of the device is reached, the controller controls the compressor 1, the inlet pneumatic valve 23 of the hydrogen purification unit, the first-stage membrane inlet pneumatic valve 24, the second-stage membrane purified gas pneumatic valve 25, the third-stage membrane purified gas pneumatic valve 26, and the exhaust pneumatic valve 27 to periodically cut off power.

[0053] If the gas pressure signal detected by the controller exceeds the set threshold range, all equipment will be stopped for an extended period. The first manual valve 7 to the eleventh manual valve 17 will be manually closed and the fourth manual valve 10 will be opened to allow the residual hydrogen in the pipeline to be discharged to the exhaust port 6 through the bypass pipeline. Then, the first purification mechanism will be inspected and maintained.

[0054] If the airflow signal detected by the controller exceeds the set threshold range, the manual valve on the corresponding pipeline will be closed, and the second and third purification mechanisms will be inspected. The first purification mechanism will not be closed temporarily. If the second and third purification mechanisms need to be stopped for a long time, the first purification mechanism will be closed accordingly to avoid sudden changes in the generator's air supply pressure and sudden generator shutdown, which could cause operational malfunctions. Example

[0055] This embodiment provides a generator hydrogen purification and enhancement device, with the same basic concept as Embodiment 1, including: an air inlet, a generator air supply inlet, a purification mechanism, a multi-stage purification mechanism, and an exhaust outlet. Optionally, a single secondary membrane filter is provided, which is connected to the first purification mechanism, the air inlet, and the third purification mechanism via a single air inlet pipe, an air outlet pipe, and a waste discharge pipe, respectively. A seventh manual valve is installed on the air inlet pipe, an eighth manual valve is installed on the waste discharge pipe, and a ninth manual valve is installed on the air outlet pipe.

[0056] Optionally, there can be one or more secondary membrane filter devices. Multiple secondary membrane filter devices are connected in parallel by an appropriate number of inlet pipes, outlet pipes, and waste discharge pipes, and then connected to the first purification mechanism, the air inlet, and the third purification mechanism respectively. Adding multiple secondary membrane filter devices can increase the efficiency of secondary filtration.

[0057] In summary, this invention utilizes a purification mechanism to cool the gas and activate carbon adsorption to fully absorb carbon dioxide, oil vapor, and dust from the gas. A multi-stage purification mechanism performs multi-stage membrane separation purification of the purified hydrogen, and the purified hydrogen is circulated more than once, thus fully purifying, regenerating, and treating the hydrogen. This results in high-purity hydrogen and improved hydrogen recovery efficiency.

[0058] By installing a bypass pipeline between the purification unit and the exhaust outlet, the stagnant airflow can be directly discharged during the maintenance of the purification unit, avoiding the entry of dust and exhaust airflow generated during the maintenance of the activated carbon tank into the multi-stage purification unit and reducing the workload of the multi-stage purification unit.

[0059] The design of the first to eleventh manual valves allows for flexible switching of airflow direction and purification mode according to the maintenance progress of each stage of the multi-stage purification mechanism. It enables the isolation of faulty and maintenance mechanisms, ensuring that the first purification mechanism can continue to operate normally during the maintenance of the second and third purification mechanisms without requiring a complete system shutdown. This avoids sudden changes in generator gas supply pressure and prevents abrupt generator shutdown. Furthermore, in cases of long-term shutdown, it allows for selective sealing of the purification mechanism, exhaust port, and the manual valve connecting the multi-stage purification mechanism outlet to the generator, preventing the safety risks caused by hydrogen leakage during shutdown. Finally, this invention can accurately separate hydrogen and carbon dioxide without affecting subsequent gas replacement.

[0060] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0061] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A generator hydrogen purification and enhancement device, characterized in that, include: An air inlet, a generator air supply port, a purification mechanism connected to the air inlet via a pipeline, a multi-stage purification mechanism connected to the air inlet, the generator air supply port and the purification mechanism respectively, and an exhaust outlet connected to the multi-stage purification mechanism. The inlet of the multi-stage purification mechanism is connected to the purification mechanism, the outlet is connected to the generator air supply port, and the exhaust port is connected to the exhaust gas discharge port. The multi-stage purification mechanism includes a first purification mechanism, a second purification mechanism, and a third purification mechanism; The inlet and outlet of the first purification mechanism are respectively connected to the purification mechanism and the generator air supply port; The inlet and outlet of the second purification mechanism are connected to the waste outlet and air inlet of the first purification mechanism, respectively. The inlet and outlet of the third purification unit are connected to the waste outlet and air inlet of the second purification unit, respectively, and the waste outlet is connected to the waste gas discharge outlet. The purified hydrogen is filtered and repeatedly circulated through the series connection of the multi-stage purification units.

2. The generator hydrogen purification and enhancement device according to claim 1, characterized in that, The purification mechanism includes a compressor connected to the air inlet via a pipe, a first manual valve located at the compressor outlet, a condenser connected to the outlet of the first manual valve, and an activated carbon canister connected to the outlet of the condenser. The compressor inlet is connected to the air inlet via a second manual valve and a pneumatic valve at the hydrogen purification device inlet, and the compressor outlet is connected to the condenser gas inlet via a first manual valve. The internal pipes of the condenser are connected to the internal chiller unit and are used to cool the high-temperature gas input from the compressor.

3. The generator hydrogen purification and enhancement device according to claim 1, characterized in that, The purification unit is also connected to the exhaust gas outlet via a bypass pipeline. One end of the bypass pipeline is connected to the outlet of the activated carbon tank via a third manual valve, and the other end of the bypass pipeline is connected to the exhaust gas outlet via a fourth manual valve.

4. The generator hydrogen purification and enhancement device according to claim 2, characterized in that, The first purification mechanism includes a primary membrane filter connected to the activated carbon tank, a primary membrane inlet pneumatic valve and a fifth manual valve installed between the primary membrane filter and the activated carbon tank, and a sixth manual valve and a primary membrane purification gas pneumatic valve installed between the generator air supply port and the primary membrane filter.

5. The generator hydrogen purification and upgrading device according to claim 4, characterized in that, The second purification mechanism includes a secondary membrane filter connected to the primary membrane filter, a seventh manual valve connected between the secondary membrane filter and the primary membrane filter, an eighth manual valve connected between the secondary membrane filter and the air inlet, and a secondary membrane purification gas pneumatic valve.

6. The generator hydrogen purification and enhancement device according to claim 5, characterized in that, The secondary membrane filtration device is a single unit, which is connected to the first purification mechanism, the air inlet, and the third purification mechanism via a single air inlet pipe, an air outlet pipe, and a waste discharge pipe, respectively.

7. The generator hydrogen purification and upgrading device according to claim 5, characterized in that, The secondary membrane filter device is one or more, and the multiple secondary membrane filter devices are connected in parallel with the first purification mechanism, the air inlet and the third purification mechanism respectively through an appropriate number of air inlet pipes, air outlet pipes and waste discharge pipes.

8. The generator hydrogen purification and upgrading device according to claim 5, characterized in that, The third purification mechanism includes a tertiary membrane filter connected to the secondary membrane filter, a ninth manual valve connected between the secondary and tertiary membrane filters, a tenth manual valve connected between the tertiary membrane filter and the air inlet, a tertiary membrane purification gas pneumatic valve, and an eleventh manual valve and a waste gas discharge pneumatic valve installed between the tertiary membrane filter and the waste gas discharge outlet.

9. The generator hydrogen purification and upgrading device according to claim 2, characterized in that, Pressure sensors are installed on the connecting pipes between the first purification unit and the activated carbon tank, and on the connecting pipes between the first purification unit and the generator air supply port, for real-time monitoring of air pressure.

10. The generator hydrogen purification and enhancement device according to claim 2, characterized in that, Both the connecting pipe between the second purification mechanism and the air inlet and the connecting pipe between the third purification mechanism and the air inlet are equipped with airflow sensors to detect the hydrogen circulation flow rate.

11. The generator hydrogen purification and enhancement device according to claim 1, characterized in that, It also includes a controller, which is electrically connected to a pressure sensor, an airflow sensor, a pneumatic valve at the inlet of the hydrogen purification unit, a pneumatic valve at the inlet of the first-stage membrane, a pneumatic valve at the inlet of the second-stage membrane purified gas, a pneumatic valve at the inlet of the third-stage membrane purified gas, and a waste discharge pneumatic valve.

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