Hydrogen purification and delivery apparatus and hydrogen generation plant

Abstract

The utility model discloses a kind of hydrogen purification and conveying device and hydrogen production equipment, device includes gas-liquid separator, transmission component and controller.Gas-liquid separator is provided with inlet channel and outlet channel.Transmission component has hydrogen supply branch and detection branch and is communicated with outlet channel, hydrogen supply branch is provided with first control valve, detection branch is provided with second control valve and at least humidity detection element for detecting hydrogen humidity, hydrogen detection element is located in second control valve and to the distance of gas-liquid separator along gas transmission direction The distance of second control valve to gas-liquid separator.Controller is electrically connected with first control valve, second control valve and humidity detection element respectively, and controller controls first control valve and second control valve according to the signal transferred by humidity detection element.The hydrogen purification and conveying device and hydrogen production equipment provided in the application solve the problem that a small amount of moisture exists in the output hydrogen of the hydrogen production equipment and the hydrogen is not stored and the humidity is high.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen production technology, and more specifically, to a hydrogen purification and transportation device and a hydrogen production equipment. Background Technology

[0002] Currently, when hydrogen production equipment outputs the produced hydrogen to storage devices for storage or to users for use, a small amount of moisture is present in the hydrogen. This moisture usually exists in the form of gas, liquid, or a gas-liquid mixture in the hydrogen, resulting in impurities and high humidity in the hydrogen output to storage devices or users. Excessive humidity can affect the working efficiency of hydrogen-using equipment such as fuel cells, reduce the storage stability of hydrogen, and easily corrode hydrogen transmission pipelines. Utility Model Content

[0003] The main objective of this invention is to provide a hydrogen purification and transportation device and a hydrogen production equipment, so as to at least solve the problem that when the hydrogen produced by the hydrogen production equipment is output, the presence of a small amount of moisture in the hydrogen leads to high humidity and low purity of the hydrogen.

[0004] According to one aspect of the present invention, a hydrogen purification and conveying device is provided, comprising:

[0005] A gas-liquid separator, wherein the gas-liquid separator is provided with an inlet channel and an outlet channel;

[0006] The transmission component includes a hydrogen supply branch and a detection branch, both of which are connected to the gas outlet channel. A first control valve is provided on the hydrogen supply branch, and a humidity detection element and a second control valve are provided on the detection branch. The humidity detection element is used to detect the humidity of the hydrogen in the detection branch at least. Along the gas transmission direction in the detection branch, the distance from the humidity detection element to the gas-liquid separator is less than the distance from the second control valve to the gas-liquid separator.

[0007] The controller is electrically connected to the first control valve, the second control valve, and the humidity detection element, respectively. The controller controls the first control valve and the second control valve according to the signal transmitted by the humidity detection element.

[0008] When the hydrogen humidity is not greater than a predetermined humidity, the controller controls the first control valve to open and the second control valve to close; when the hydrogen humidity is greater than the predetermined humidity, the controller controls the first control valve to close and the second control valve to open.

[0009] Furthermore, the humidity detection element includes a dew point sensor.

[0010] Furthermore, a pressure reducing valve is also provided on the detection branch, and the distance from the pressure reducing valve to the gas-liquid separator along the gas transmission direction in the detection branch is less than the distance from the dew point sensor to the gas-liquid separator.

[0011] Furthermore, a float flow meter is also provided on the detection branch. The float flow meter is located between the pressure reducing valve and the dew point sensor and is used at least to limit the maximum flow rate of gas passing through the dew point sensor.

[0012] Furthermore, a first pressure detection element and a third control valve are also provided on the detection branch. Along the gas transmission direction in the detection branch, the distance from the third control valve to the gas-liquid separator is greater than the distance from the second control valve to the gas-liquid separator. The first pressure detection element is located between the second control valve and the third control valve. Both the first pressure detection element and the third control valve are electrically connected to the controller.

[0013] Wherein, when the air pressure in the detection branch detected by the first pressure detection element is greater than the first predetermined air pressure, the controller controls the third control valve to open; and / or, when the humidity detection element detects that the humidity in the detection branch is greater than the predetermined humidity, the controller controls the third control valve to open.

[0014] Furthermore, a back pressure valve is also provided on the hydrogen supply branch. Along the gas transmission direction in the hydrogen supply branch, the distance from the back pressure valve to the gas-liquid separator is less than the distance from the first control valve to the gas-liquid separator. The back pressure valve is configured to open when the gas pressure in the hydrogen supply branch is greater than a second predetermined gas pressure.

[0015] Furthermore, a flow detection element is also provided on the hydrogen supply branch; and / or, a second pressure detection element is also provided on the hydrogen supply branch.

[0016] Furthermore, the gas-liquid separator includes at least two gas-liquid separators, each of which is connected in sequence and the outlet channel of the preceding gas-liquid separator is connected to the inlet channel of the following gas-liquid separator. Along the gas transmission direction, the hydrogen supply branch and the detection branch are respectively connected to the outlet channel of the last gas-liquid separator. A heat exchanger is provided between any two interconnected gas-liquid separators.

[0017] Furthermore, the heat exchanger is provided with a gas flow channel and a refrigerant flow channel. Along the gas transmission direction, the first port of the gas flow channel is connected to the gas outlet channel of the preceding gas-liquid separator, and the second port of the gas flow channel opposite to the first port is connected to the gas inlet channel of the following gas-liquid separator.

[0018] The refrigerant channel is provided with a refrigerant medium, which absorbs heat from the gas channel to convert at least a portion of the gas in the gas channel into a liquid.

[0019] The heat exchanger is electrically connected to the controller. When the humidity of the hydrogen gas detected by the humidity detection element is greater than the predetermined humidity, the controller adjusts the heat exchange temperature of the heat exchanger.

[0020] On the other hand, this utility model also provides a hydrogen production device, which includes the above-mentioned hydrogen purification and transportation device.

[0021] In this invention, a gas-liquid separator separates moisture from hydrogen, reducing its water content and purifying it. A humidity detection element and a second control valve connected to the gas-liquid separator's outlet channel on the detection branch of the transmission assembly, and a first control valve connected to the gas-liquid separator's outlet channel on the hydrogen supply branch, monitor the hydrogen humidity in real time. The controller controls the opening and closing of the first and second control valves based on the detection results, ensuring that the hydrogen humidity delivered to user equipment meets actual usage requirements, guaranteeing efficient and safe operation of the equipment. High humidity hydrogen easily corrodes hydrogen transmission pipelines. By detecting and controlling hydrogen humidity, high humidity hydrogen is prevented from entering the transmission pipelines, significantly reducing the risk of corrosion and extending their service life. When the hydrogen humidity is not greater than a predetermined value, the controller opens the first control valve and closes the second control valve, allowing hydrogen to be delivered to the hydrogen-using equipment via the hydrogen supply branch, preventing hydrogen from entering the detection branch and ensuring efficient delivery of output hydrogen. When the humidity of the hydrogen exceeds the predetermined humidity, the controller closes the first control valve and opens the second control valve, allowing the hydrogen to enter the detection branch. This prevents the high-humidity hydrogen from entering the hydrogen supply branch and being delivered to the user, thus preventing the high-humidity hydrogen from affecting the working efficiency and safety of the hydrogen-using equipment. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the hydrogen purification and conveying device disclosed in an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the hydrogen purification and conveying device disclosed in an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the hydrogen purification and conveying device disclosed in an embodiment of the present invention from another perspective.

[0026] The above figures include the following reference numerals:

[0027] 10. Gas-liquid separator; 11. Inlet channel; 12. Outlet channel; 13. Liquid outlet channel; 14. Liquid outlet control valve; 20. First control valve; 21. Humidity detection element; 22. Second control valve; 23. Pressure reducing valve; 24. Float flow meter; 25. First pressure detection element; 26. Third control valve; 27. Back pressure valve; 28. Flow detection element; 29. ​​Second pressure detection element; 30. Heat exchanger; 31. First port; 32. Second port; 33. Refrigerant inlet; 34. Refrigerant outlet. Detailed Implementation

[0028] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0031] As mentioned in the background section, existing hydrogen production equipment mainly produces hydrogen through water electrolysis. Freshly produced hydrogen often contains some moisture. If this moisture-laden hydrogen enters hydrogen-using equipment, it can significantly impact the equipment's operating efficiency and pose a considerable safety hazard. Therefore, this application provides a hydrogen purification and delivery device and hydrogen production equipment. It purifies hydrogen by separating liquid water from the hydrogen using a gas-liquid separator. When supplying the purified hydrogen to user-end equipment, the humidity of the hydrogen is first detected by the detection branch of the transmission component. Only when the humidity is below a preset level (meeting usage requirements) is the first control valve of the hydrogen supply branch opened by the controller to supply hydrogen. Otherwise, the second control valve of the detection branch is opened by the controller to discharge unusable hydrogen, avoiding the possibility of residual moisture in the hydrogen after passing through the gas-liquid separator and improving hydrogen purity. The following will provide a detailed description and explanation of the terminal disassembly tool of this utility model in conjunction with the accompanying drawings.

[0032] See Figures 1 to 3 As shown in the embodiment of this application, a hydrogen purification and conveying device is provided, including a gas-liquid separator 10, a conveying assembly, and a controller. The gas-liquid separator 10 is provided with an inlet channel 11 and an outlet channel 12. The conveying assembly is provided with a hydrogen supply branch and a detection branch, both of which are connected to the outlet channel 12. A first control valve 20 is provided on the hydrogen supply branch, and a humidity detection element 21 and a second control valve 22 are provided on the detection branch. The humidity detection element 21 is used at least to detect the hydrogen humidity in the detection branch. Along the gas conveying direction in the detection branch, the distance from the humidity detection element 21 to the gas-liquid separator 10 is less than the distance from the second control valve 22 to the gas-liquid separator 10. The controller is electrically connected to the first control valve 20, the second control valve 22, and the humidity detection element 21, respectively. The controller controls the first control valve 20 and the second control valve 22 according to the signal transmitted by the humidity detection element 21. When the hydrogen humidity is not greater than the predetermined humidity, the controller controls the first control valve 20 to open and the second control valve 22 to close. When the hydrogen humidity is greater than the predetermined humidity, the controller controls the first control valve 20 to close and the second control valve 22 to open.

[0033] Understandably, the prepared or stored hydrogen may contain a certain amount of moisture due to pressure or temperature changes. The hydrogen is transported through the inlet channel 11 to the gas-liquid separator 10. The gas-liquid separator 10 has a separation chamber inside. The gas-liquid separator 10 utilizes the density difference between hydrogen and water, as well as the principle of fluid separation, to separate the moisture from the hydrogen. Specifically, the gas-liquid separator 10 uses gravity settling to allow the heavier moisture to settle to the bottom of the separation chamber and be discharged, leaving hydrogen with a significantly reduced water content. The hydrogen then flows out through the outlet channel 12 of the gas-liquid separator 10, effectively removing moisture from the hydrogen and improving its purity. After purification by the gas-liquid separator 10, the hydrogen enters the hydrogen supply branch and the detection branch of the transmission component. The humidity detection element 21 in the detection branch detects the humidity of the hydrogen entering the detection branch and transmits the detected hydrogen humidity data to the controller. After receiving the hydrogen humidity data from the detection branch, the controller compares the hydrogen humidity data with the preset humidity set by the controller itself. The preset humidity is set according to the application scenario or equipment performance requirements. When the hydrogen humidity data from the detection branch is less than or equal to the preset humidity, it indicates that the hydrogen purification and transmission device can supply hydrogen through the hydrogen supply branch. The controller controls the first control valve 20 to open and simultaneously controls the second control valve 22 to close. At this time, hydrogen can only flow out from the hydrogen supply branch, so as to supply hydrogen to the user end or external hydrogen storage equipment through the hydrogen supply branch. Similarly, when the hydrogen humidity data of the detection branch is greater than the predetermined humidity, it indicates that the purity of the hydrogen is insufficient and hydrogen cannot be supplied through the hydrogen supply branch. The controller controls the first control valve 20 to close and simultaneously controls the second control valve 22 to open. At this time, hydrogen can only flow out from the detection branch, so as to discharge the hydrogen with lower purity through the detection branch, prevent the hydrogen with lower purity from entering the user end or hydrogen storage device, and improve the safety of hydrogen use.

[0034] Preferably, both the first control valve 20 and the second control valve 22 are solenoid valves. Solenoid valves have a fast response speed, enabling them to quickly respond to controller commands and rapidly switch hydrogen transmission paths, ensuring timely and accurate hydrogen supply. Solenoid valves ensure good performance in both valve opening and closing states, preventing hydrogen mixing and ensuring hydrogen purity. Solenoid valves are also easy to control remotely, allowing for remote communication with the controller and improving the automation level of the device.

[0035] Optionally, the gas-liquid separator 10 can also separate moisture from hydrogen through centrifugal force. When hydrogen enters the gas-liquid separator 10 through the inlet channel 11, the structure inside the gas-liquid separator 10 enables the hydrogen to rotate at high speed. According to the principle of centrifugal force, since water is denser than hydrogen, the water is subjected to a greater centrifugal force during rotation. The water is thrown against the inner wall of the separation chamber of the gas-liquid separator 10 and gradually flows downward along the inner wall, eventually converging at the bottom of the separation chamber and being discharged through a specially designed drain outlet. Meanwhile, because of its light weight, the hydrogen forms a rotating airflow column in the central region of the separator and flows out through the outlet channel.

[0036] Optionally, the gas-liquid separator 10 can also separate moisture from hydrogen through filtration, by incorporating a filter medium such as a multi-layer fiber filter or a special membrane material inside the gas-liquid separator 10. When hydrogen carrying moisture enters the gas-liquid separator 10 through the inlet channel 11, it passes through the filter medium. Due to the very small pore size of the filter medium, water molecules and small water droplets are intercepted on the surface of the filter medium, while hydrogen molecules, being small, can pass through the filter medium smoothly. Under the combined action of gravity and airflow, the intercepted moisture gradually gathers into larger water droplets on the surface of the filter medium and flows downward along the filter medium, eventually flowing into the bottom of the separation chamber.

[0037] Optionally, the controller in this embodiment includes, but is not limited to, a PLC (Programmable Logic Controller), a microcontroller, or an IPC (Industrial Computer).

[0038] Furthermore, the humidity detection element 21 includes a dew point sensor. The dew point sensor measures the dew point temperature of the hydrogen gas in the detection branch. The dew point temperature indicates the humidity of the hydrogen gas; it is the temperature at which water vapor in the gas begins to condense into liquid water under constant pressure. The lower the dew point temperature, the less water vapor content in the gas, and the higher the purity of the hydrogen. The dew point temperature accurately reflects the humidity of the hydrogen gas. The humidity detection element 21, using a dew point sensor, can quickly detect the hydrogen humidity, thereby controlling the first control valve 20 and the second control valve 22 based on the hydrogen humidity. This ensures that the output hydrogen load meets application requirements and avoids performance degradation or damage to hydrogen-using equipment caused by high humidity hydrogen.

[0039] Furthermore, a pressure reducing valve 23 is installed on the detection branch. Along the gas transmission direction in the detection branch, the distance from the pressure reducing valve 23 to the gas-liquid separator 10 is less than the distance from the dew point sensor to the gas-liquid separator 10. The hydrogen output from the gas-liquid separator 10 often has a high pressure, while the dew point sensor can only function properly and ensure measurement accuracy within a lower pressure range. The pressure reducing valve 23 mainly uses sensitive elements such as diaphragms and springs to sense changes in outlet pressure and adjusts the valve opening by moving the valve core, thereby achieving pressure reduction and stabilization. When the outlet pressure increases, the sensitive element senses the pressure change and pushes the valve core to close to a certain extent, reducing the fluid flow and lowering the outlet pressure to the set value; conversely, when the outlet pressure decreases, the valve core will open accordingly, increasing the fluid flow to maintain a stable outlet pressure. Along the gas transmission direction in the detection branch, a pressure reducing valve 23 is installed before the dew point sensor. The pressure reducing valve 23 can reduce the pressure of hydrogen gas before it enters the dew point sensor to a range that the dew point sensor can withstand, preventing the hydrogen gas pressure from being too high and damaging the dew point sensor. This not only ensures the detection accuracy of the dew point sensor, but also extends its service life.

[0040] Furthermore, a float flow meter 24 is also installed on the detection branch. The float flow meter 24 is located between the pressure reducing valve 23 and the dew point sensor and is used to limit the maximum flow rate of gas passing through the dew point sensor. In this embodiment, the flow rate of hydrogen passing through the dew point sensor is subject to high requirements. Limiting the maximum flow rate of hydrogen passing through the dew point sensor by the float flow meter 24 prevents excessive hydrogen flow from impacting or damaging the dew point sensor, extends the service life of the dew point sensor, and ensures that the dew point sensor can stably and accurately detect the hydrogen humidity.

[0041] Furthermore, a first pressure detection element 25 and a third control valve 26 are also provided on the detection branch. Along the gas transmission direction in the detection branch, the distance from the third control valve 26 to the gas-liquid separator 10 is greater than the distance from the second control valve 22 to the gas-liquid separator 10. The first pressure detection element 25 is located between the second control valve 22 and the third control valve 26. Both the first pressure detection element 25 and the third control valve 26 are electrically connected to the controller.

[0042] When the air pressure in the detection branch detected by the first pressure detection element 25 is greater than the first predetermined air pressure, the controller controls the third control valve 26 to open. When the humidity detection element 21 detects that the humidity in the detection branch is greater than the predetermined humidity, the controller controls the third control valve 26 to open.

[0043] In this embodiment, a first pressure detection element 25 and a third control valve 26 are installed between the dew point sensor and the second control valve 22 along the gas transmission direction of the detection branch. The first pressure detection element 25 detects the hydrogen pressure in the detection branch and transmits the detected pressure to the controller. After receiving the hydrogen pressure value in the detection branch, the controller compares it with a first predetermined pressure. When the hydrogen pressure value in the detection branch is greater than the predetermined pressure, hydrogen has accumulated in the detection branch. The controller then controls the third control valve 26 to open to relieve pressure in the detection branch and prevent excessive pressure from damaging the gas transmission pipeline and components of the detection branch. That is, the third control valve 26 in this embodiment mainly functions as a safety valve to relieve pressure in the detection branch and prevent excessive pressure. Furthermore, when the humidity of the hydrogen gas detected by the humidity detection element 21 is greater than the predetermined humidity, the controller not only controls the second control valve 22 to open, but also simultaneously controls the third control valve 26 to open, so as to discharge the non-compliant hydrogen gas from the detection branch and prevent the hydrogen gas from being unable to be discharged due to the presence of the third control valve 26.

[0044] Furthermore, a back pressure valve 27 is also provided on the hydrogen supply branch. Along the gas transmission direction in the hydrogen supply branch, the distance from the back pressure valve 27 to the gas-liquid separator 10 is less than the distance from the first control valve 20 to the gas-liquid separator 10. The back pressure valve 27 is configured to open when the gas pressure in the hydrogen supply branch is greater than the second predetermined gas pressure.

[0045] Specifically, the back pressure valve 27 works by using spring force or other external force to resist the pressure of the fluid (i.e., hydrogen in this embodiment). When the fluid pressure is lower than the set back pressure value (i.e., the second predetermined gas pressure), the valve of the back pressure valve 27 closes, preventing the fluid from passing through. When the fluid pressure reaches or exceeds the back pressure value, the valve of the back pressure valve 27 opens, allowing the fluid to pass through, thereby maintaining the fluid pressure at a certain level. In this embodiment, the back pressure valve 27 is located closer to the gas-liquid separator 10 than the first control valve 20 in the gas transmission direction along the hydrogen supply branch. It can control the pressure of the hydrogen supplied to the user end or hydrogen storage device through the hydrogen supply branch, and the second predetermined gas pressure can be set according to actual conditions to adapt to different pressure requirements and ensure that the output gas pressure meets the application requirements.

[0046] Preferably, a flow detection element 28 is also provided on the hydrogen supply branch. The flow detection element 28 can detect the flow rate of hydrogen supplied by the hydrogen supply branch. The flow detection element 28 includes a mass flow meter, which mainly calculates the mass flow rate of the fluid (i.e., hydrogen) by measuring the degree of torsion of the vibrating tube. The mass flow rate represents the mass of fluid passing through the cross-section of the pipe per unit time and can be used to detect the hydrogen production rate in real time. The mass flow meter has high detection accuracy and a relatively simple structure, making it less prone to damage that could reduce detection accuracy, and can accurately detect the flow rate of hydrogen supplied by the hydrogen supply branch.

[0047] Optionally, a flow detection element 28 is installed on the gas outlet channel 12 of the gas-liquid separator 10, which is connected to the hydrogen supply branch and the detection branch respectively, to detect the hydrogen flow rate before entering the hydrogen supply branch and the detection branch. By comparing the detected hydrogen flow rate with the hydrogen production capacity of the hydrogen production equipment, it can be determined whether the gas-liquid separator is leaking. When the detected hydrogen flow rate is less than the hydrogen production capacity of the hydrogen production equipment, it can be determined that the gas-liquid separator 10 is leaking, and the gas-liquid separator 10 is stopped from use and repaired, thus avoiding the safety hazards caused by the gas-liquid separator 10 leaking.

[0048] Preferably, the hydrogen supply branch is also equipped with a second pressure detection element 29. The second pressure detection element 29 is a pressure sensor. By setting a pressure sensor on the hydrogen supply branch, the gas pressure value of the hydrogen supplied by the hydrogen supply branch can be determined. Although a back pressure valve 27 is set to ensure that the hydrogen supply pressure meets the requirements, the specific gas pressure value is unknown. Therefore, the pressure sensor can measure the output gas pressure to provide accurate data to the hydrogen user.

[0049] Furthermore, the gas-liquid separator 10 includes at least two gas-liquid separators 10, which are connected in sequence, and the outlet channel 12 of the previous gas-liquid separator 10 is connected to the inlet channel 11 of the next gas-liquid separator 10. Along the gas transmission direction, the hydrogen supply branch and the detection branch are respectively connected to the outlet channel 12 of the last gas-liquid separator 10. A heat exchanger 30 is provided between any two interconnected gas-liquid separators 10.

[0050] In this embodiment, multiple gas-liquid separators 10 can perform multi-stage gas-liquid separation. A heat exchanger 30 is installed between two interconnected gas-liquid separators 10 to further improve the purity of the hydrogen. The heat exchanger 30 converts residual gaseous water in the hydrogen supplied by the previous gas-liquid separator 10 into liquid water, which is then separated by the next gas-liquid separator 10 to purify the hydrogen. The purified hydrogen enters the hydrogen supply branch and detection branch through the outlet channel 12 of the last gas-liquid separator 10 for further hydrogen supply and detection. The combination of multi-stage gas-liquid separation and heating further improves the gas-liquid separation efficiency, resulting in higher purity of the final output hydrogen.

[0051] Furthermore, the heat exchanger 30 is provided with a gas flow channel and a refrigerant flow channel. Along the gas transmission direction, the first port 31 of the gas flow channel is connected to the gas outlet channel of the previous gas-liquid separator 10, and the second port 32 of the gas flow channel, which is opposite to the first port 31, is connected to the gas inlet channel of the next gas-liquid separator 10.

[0052] The refrigerant channel contains a refrigerant that absorbs heat from the gas flow channel, causing at least a portion of the gas within the channel to transform into liquid. After flowing out of the outlet channel of the gas-liquid separator 10, the gas enters the gas flow channel through the first port 31 of the gas flow channel of the heat exchanger 30. Simultaneously, the refrigerant enters the refrigerant flow channel from the refrigerant inlet 33, achieving heat exchange between the gas and the refrigerant before flowing out from the refrigerant outlet 34.

[0053] Optionally, the heat exchanger 30 includes a condenser. After the low-temperature refrigerant enters the condenser from the refrigerant channel, it exchanges heat with the high-temperature hydrogen containing gaseous water in the gas channel to liquefy the gaseous water in the hydrogen into liquid water, which is then transported to the gas-liquid separator 10 for separation from the hydrogen.

[0054] The heat exchanger 30 is electrically connected to the controller. When the humidity of the hydrogen gas detected by the humidity detection element 21 is greater than the predetermined humidity, the controller adjusts the heat exchange temperature of the heat exchanger 30.

[0055] Furthermore, each gas-liquid separator 10 is also provided with a liquid outlet channel 13, and the liquid outlet channel 13 of each gas-liquid separator 10 is connected to the liquid outlet. Two liquid outlet control valves 14 are provided between the liquid outlet channel 13 and the liquid outlet of each gas-liquid separator 10 to form a double seal between each gas-liquid separator 10 and the liquid outlet.

[0056] In this embodiment, the liquid outlet channel 13 is used to discharge the liquid water condensed in the cold heat exchanger 30 (condenser). The liquid outlet channels of each gas-liquid separator 10 are connected to the liquid outlets, collecting the liquid water before discharge. This optimizes the structure of the device and reduces costs. Two liquid outlet control valves 14 are provided between each gas-liquid separator 10 and the liquid outlet to control the liquid water discharged from each gas-liquid separator 10 and prevent accumulation. The liquid outlet control valves 14 are preferably one-way solenoid valves. The one-way solenoid valves can prevent liquid water from returning to the gas-liquid separator 10, thereby affecting the purity of hydrogen. The one-way solenoid valves can also be connected to a controller for automatic control when there are a large number of gas-liquid separators 10, improving the automation level and working efficiency of the device.

[0057] Optionally, the hydrogen transport pipelines between the components in this embodiment are made of stainless steel. Using stainless steel pipelines effectively prevents hydrogen embrittlement, provides corrosion resistance, withstands high temperatures and pressures, and reduces the risk of leakage. Compared to other materials, stainless steel pipelines have higher mechanical strength and chemical stability, ensuring safety and reliability during long-term operation.

[0058] On the other hand, this application also discloses a hydrogen production device, which includes the aforementioned hydrogen purification and transportation apparatus. Therefore, this hydrogen production device possesses all the technical effects of the aforementioned hydrogen purification and transportation apparatus. Since the technical effects of the hydrogen purification and transportation apparatus have already been described in detail above, they will not be repeated here.

[0059] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0060] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0061] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydrogen purification and conveying device, characterized in that, include: A gas-liquid separator (10) is provided with an air inlet channel (11) and an air outlet channel (12); The transmission component is provided with a hydrogen supply branch and a detection branch. Both the hydrogen supply branch and the detection branch are connected to the gas outlet channel (12). A first control valve (20) is provided on the hydrogen supply branch, and a humidity detection element (21) and a second control valve (22) are provided on the detection branch. The humidity detection element (21) is used to detect the hydrogen humidity in the detection branch. Along the gas transmission direction in the detection branch, the distance from the humidity detection element to the gas-liquid separator (10) is less than the distance from the second control valve (22) to the gas-liquid separator (10). The controller is electrically connected to the first control valve (20), the second control valve (22) and the humidity detection element (21) respectively. The controller controls the first control valve (20) and the second control valve (22) according to the signal transmitted by the humidity detection element (21). When the hydrogen humidity is not greater than a predetermined humidity, the controller controls the first control valve (20) to open and controls the second control valve (22) to close; when the hydrogen humidity is greater than the predetermined humidity, the controller controls the first control valve (20) to close and controls the second control valve (22) to open.

2. The hydrogen purification and conveying device according to claim 1, characterized in that, The humidity detection element (21) includes a dew point sensor.

3. The hydrogen purification and conveying device according to claim 2, characterized in that, A pressure reducing valve (23) is also provided on the detection branch. Along the gas transmission direction in the detection branch, the distance from the pressure reducing valve (23) to the gas-liquid separator (10) is less than the distance from the dew point sensor to the gas-liquid separator (10).

4. The hydrogen purification and conveying device according to claim 3, characterized in that, A float flow meter (24) is also provided on the detection branch. The float flow meter (24) is located between the pressure reducing valve (23) and the dew point sensor and is used at least to limit the maximum flow rate of gas passing through the dew point sensor.

5. The hydrogen purification and conveying device according to claim 1, characterized in that, The detection branch is also provided with a first pressure detection element (25) and a third control valve (26). Along the gas transmission direction in the detection branch, the distance from the third control valve (26) to the gas-liquid separator (10) is greater than the distance from the second control valve (22) to the gas-liquid separator (10). The first pressure detection element (25) is located between the second control valve (22) and the third control valve (26). Both the first pressure detection element (25) and the third control valve (26) are electrically connected to the controller. Wherein, when the air pressure in the detection branch detected by the first pressure detection element (25) is greater than the first predetermined air pressure, the controller controls the third control valve (26) to open; and / or, when the humidity detection element (21) detects that the humidity in the detection branch is greater than the predetermined humidity, the controller controls the third control valve (26) to open.

6. The hydrogen purification and conveying device according to claim 1, characterized in that, A back pressure valve (27) is also provided on the hydrogen supply branch. Along the gas transmission direction in the hydrogen supply branch, the distance from the back pressure valve (27) to the gas-liquid separator (10) is less than the distance from the first control valve (20) to the gas-liquid separator (10). The back pressure valve (27) is configured to open when the gas pressure in the hydrogen supply branch is greater than a second predetermined gas pressure.

7. The hydrogen purification and conveying apparatus according to any one of claims 1 to 6, characterized in that, A back pressure valve (27) is also provided on the hydrogen supply branch; and / or, a second pressure detection element (29) is also provided on the hydrogen supply branch.

8. The hydrogen purification and conveying apparatus according to any one of claims 1 to 6, characterized in that, The gas-liquid separator (10) includes at least two, and each gas-liquid separator (10) is connected in sequence. The outlet channel (12) of the previous gas-liquid separator (10) is connected to the inlet channel (11) of the next gas-liquid separator (10). Along the gas transmission direction, the hydrogen supply branch and the detection branch are respectively connected to the outlet channel (12) of the last gas-liquid separator (10). A heat exchanger (30) is provided between any two gas-liquid separators (10) that are connected to each other.

9. The hydrogen purification and conveying device according to claim 8, characterized in that, The heat exchanger (30) is provided with a gas flow channel and a refrigerant flow channel. Along the gas transmission direction, the first port (31) of the gas flow channel is connected to the gas outlet channel (12) of the previous gas-liquid separator (10), and the second port (32) of the gas flow channel opposite to the first port (31) is connected to the gas inlet channel (11) of the next gas-liquid separator (10). The refrigerant channel is provided with a refrigerant medium, which absorbs heat from the gas channel to convert at least a portion of the gas in the gas channel into a liquid. The heat exchanger (30) is electrically connected to the controller. When the humidity of the hydrogen gas detected by the humidity detection element (21) is greater than the predetermined humidity, the controller adjusts the heat exchange temperature of the heat exchanger (30).

10. A hydrogen production device, characterized in that, The hydrogen production equipment includes the hydrogen purification and transportation device as described in any one of claims 1 to 9.

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