Water separation module and gas production device

Abstract

The utility model discloses a kind of water removal separation module and gas making device, it is related to gas-water separation technical field, wherein, water removal separation module includes sequentially communicating first-stage separation module, secondary separation module and third-stage separation module;First-stage separation module includes first cylinder and cyclone guide head being set in the inside of first cylinder, first cylinder is provided with air inlet, air inlet is used to communicate cyclone guide head and gas making equipment, to be used for making gas pass through cyclone guide head and enter the inner chamber of first cylinder, secondary separation module inside is provided with micropore filter core, third-stage separation module includes double-cavity adsorption tank body and switch valve, double-cavity adsorption tank body includes two independent adsorption cavities, two adsorption cavities are filled with molecular sieve adsorption layer, two adsorption cavities are connected in parallel, two adsorption cavities are communicated with secondary separation module by switch valve;Switch valve is used to switch the outlet of secondary separation module and one adsorption cavity communication or another adsorption cavity communication.

Description

Technical Field

[0001] This utility model relates to the technical field of gas-water separation equipment, and in particular to a water separation module and a gas generation device. Background Technology

[0002] In industrial production, compressed gases (such as nitrogen and compressed air) often contain a large amount of free liquid water, suspended water mist and gaseous water vapor. They need to be dehydrated and dried before they can meet the requirements of high-purity welding, electronic semiconductors, precision testing and other scenarios.

[0003] In existing technologies, although some water separation modules employ multi-stage filtration structures, the lack of a reasonable gradient between each stage allows liquid water to directly enter the adsorption unit, leading to moisture absorption and failure of the adsorption material, and a decrease in drying efficiency. Furthermore, when the adsorption unit needs regeneration or replacement, the system must be shut down, preventing continuous gas supply and impacting production efficiency.

[0004] Therefore, it is necessary to provide a new water separation module and gas generation device to solve the aforementioned technical problems. Utility Model Content

[0005] The main purpose of this invention is to propose a water separation module and a gas generation device, which aims to improve the technical problems of low gas dehydration and drying efficiency and poor operational stability in the prior art.

[0006] To achieve the aforementioned objective, according to one aspect of this utility model, a water separation module is provided, comprising a primary separation module, a secondary separation module, and a tertiary separation module connected in sequence. The first-stage separation module includes a first cylinder and a swirl guide head disposed inside the first cylinder. The first cylinder is provided with an air inlet, which is used to connect the swirl guide head and the gas generating device so that gas can enter the inner cavity of the first cylinder through the swirl guide head. The secondary separation module is equipped with a microporous filter element. The three-stage separation module includes a dual-chamber adsorption tank and a switching valve. The dual-chamber adsorption tank includes two independent adsorption chambers, each filled with a molecular sieve adsorption layer. The two adsorption chambers are connected in parallel and are connected to the two-stage separation module through the switching valve. The switching valve has a first working state and a second working state. When the switching valve is in the first working state, the outlet of the secondary separation module is connected to one of the adsorption chambers. When the switching valve is in the second working state, the outlet of the secondary separation module is connected to the other adsorption chamber.

[0007] In one embodiment, the primary separation module further includes a water storage cup, the bottom of the first cylinder is connected to the water storage cup, the water storage cup is provided with a first drain outlet, and a drain valve is provided at the first drain outlet.

[0008] In one embodiment, the three-stage separation module further includes two heating and purging components, which are respectively disposed in the two adsorption chambers. The heating and purging components are used to remove water molecules from the molecular sieve adsorption layer, and the two three-stage separation modules are provided with a second drain outlet.

[0009] In one embodiment, a third drain outlet is provided at the bottom of the secondary separation module.

[0010] In one embodiment, the swirl guide head has a plurality of vent holes communicating with the inner cavity of the first cylinder, and the plurality of vent holes are evenly distributed.

[0011] In one embodiment, the microporous filter element is a sintered PE microporous filter element.

[0012] In one embodiment, the pore size of the sintered PE microporous filter element is 0.01 μm.

[0013] In one embodiment, the molecular sieve adsorption layer is a 3A molecular sieve particle packing or a 3A molecular sieve fiber bundle packing.

[0014] In one embodiment, a spiral centrifugal flow channel is formed on the inner wall of the first cylinder.

[0015] According to another aspect of the present invention, the present invention also provides a gas generating device, including a gas generating device and a water separation module as described above, wherein the gas outlet of the gas generating device is connected to the gas inlet of the primary separation module.

[0016] In the above scheme, the water separation module includes a primary separation module, a secondary separation module, and a tertiary separation module connected in sequence. The primary separation module includes a first cylinder and a cyclone guide head disposed inside the first cylinder. The first cylinder is provided with an air inlet, which is used to connect the cyclone guide head and the gas generating equipment so that gas can enter the inner cavity of the first cylinder through the cyclone guide head. The secondary separation module is provided with a microporous filter element inside. The tertiary separation module includes a dual-cavity adsorption tank and a switching valve. The dual-cavity adsorption tank includes two independent adsorption chambers, both of which are filled with a molecular sieve adsorption layer. The two adsorption chambers are arranged in parallel and are connected to the secondary separation module through the switching valve. The switching valve has a first working state and a second working state. When the switching valve is in the first working state, the outlet of the secondary separation module is connected to one of the adsorption chambers. When the switching valve is in the second working state, the outlet of the secondary separation module is connected to the other adsorption chamber.

[0017] Specifically, the air inlet of the primary separation module is connected to the air outlet of the gas generating equipment, the outlet of the primary separation module is connected to the inlet of the secondary separation module, the outlet of the secondary separation module is connected to the inlets of the two adsorption chambers in the dual-chamber adsorption tank through a switching valve, and finally the outlets of the two adsorption chambers are connected to the gas-using equipment or the collection equipment.

[0018] After the gas-generating equipment enters the primary separation module through the inlet, the gas flow passes through the swirl guide head and enters the inner cavity of the first cylinder. The swirl guide head guides the gas to make a spiral centrifugal motion along the inner wall of the first cylinder. Since the density of water is much greater than that of gas, the free liquid water carried in the gas is thrown towards the inner wall of the first cylinder under the action of centrifugal inertial force and converges and falls along the inner wall, thereby achieving the primary coarse separation of free liquid water. After being processed by the primary separation module, the free liquid water visible to the naked eye in the gas is basically removed, but a large amount of micron-sized suspended water mist still remains in the gas. The gas then enters the secondary separation module. When the gas flows through the microporous filter element set inside the secondary separation module, the micron-sized suspended water mist carried in the gas is intercepted and captured by the microporous structure of the microporous filter element. The water mist particles collide and converge into droplets on the microporous skeleton and then drip downwards, thereby achieving secondary fine filtration of suspended water mist. After being processed by the secondary separation module, the content of suspended water mist in the gas is greatly reduced, but the gas still contains gaseous water vapor molecules. The gas then enters the tertiary separation module through a switching valve located between the outlet of the secondary separation module and the inlet of the dual-chamber adsorption tank. The dual-chamber adsorption tank comprises two independent and parallel adsorption chambers, each filled with a molecular sieve adsorption layer. When the switching valve is in its first operating state, the outlet of the secondary separation module connects to one of the adsorption chambers, allowing gas to enter. Residual gaseous water vapor molecules in the gas are selectively captured and adsorbed by the molecular sieve adsorption layer, achieving deep drying of the gaseous water vapor. When the switching valve is in its second operating state, the outlet of the secondary separation module connects to the other adsorption chamber, allowing gas to enter the other adsorption chamber for further adsorption and drying of the gaseous water vapor. The two adsorption chambers operate alternately via the switching valve. When one chamber is in adsorption mode, the other chamber can regenerate or replace the molecular sieve adsorption layer. After regeneration, the switching valve switches the operating state, and the roles of the two adsorption chambers are reversed, thus achieving a continuous and uninterrupted gas supply.

[0019] This invention utilizes a three-stage separation module—a primary separation module, a secondary separation module, and a tertiary separation module—connected in series. This allows gas to flow through three stages: centrifugal cyclone separation, microporous interception filtration, and molecular sieve adsorption drying. Free liquid water, suspended water mist, and gaseous water vapor are removed from the gas in a progressively effective three-stage gradient dehydration and drying process, significantly improving efficiency. Because liquid water is removed sequentially in the primary and secondary separation modules, direct entry of liquid water into the adsorption chamber of the tertiary separation module avoids moisture absorption and failure of the molecular sieve adsorption layer, extending its lifespan and improving drying efficiency. Furthermore, by controlling the alternating operation of the two adsorption chambers via a switching valve, one chamber can be regenerated or replaced simultaneously while the other is performing adsorption drying. This allows for chamber switching without downtime, enhancing the stability and continuity of equipment operation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of an embodiment of the water separation module provided by this utility model; Figure 2 A schematic diagram of the internal structure of an embodiment of the water separation module provided by this utility model; Figure 3 A schematic diagram of the internal structure of an embodiment of the primary separation module provided by this utility model.

[0022] Explanation of icon numbers: 100. Water separation module; 1. Primary separation module; 11. First cylinder; 111. Air inlet; 12. Swirl guide head; 121. Vent hole; 13. Water storage cup; 131. First drain outlet; 14. Drain valve; 2. Secondary separation module; 3. Tertiary separation module; 21. Microporous filter element; 22. Third drain outlet; 31. Dual-chamber adsorption tank; 311. Adsorption chamber; 311a. Second drain outlet; 312. Molecular sieve adsorption layer; 32. Switching valve.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] 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 scope of protection of the present utility model.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] For your purpose, please refer to Figures 1 to 3This utility model proposes a water separation module 100, comprising a primary separation module 1, a secondary separation module 2, and a tertiary separation module 3 connected in sequence. The primary separation module 1 includes a first cylinder 11 and a cyclone guide head 12 disposed inside the first cylinder 11. The first cylinder 11 is provided with an air inlet 111, which is used to connect the cyclone guide head 12 and a gas generating device to allow gas to enter the inner cavity of the first cylinder 11 through the cyclone guide head 12. The secondary separation module 2 is provided with a microporous filter element 21. The tertiary separation module 3 includes a dual-cavity adsorption tank 31 and a switching valve. 32. The dual-chamber adsorption tank 31 includes two independent adsorption chambers 311, each filled with a molecular sieve adsorption layer 312. The two adsorption chambers 311 are arranged in parallel and connected to the secondary separation module 2 via a switching valve 32. The switching valve 32 has a first working state and a second working state. When the switching valve 32 is in the first working state, the outlet of the secondary separation module 2 is connected to one of the adsorption chambers 311. When the switching valve 32 is in the second working state, the outlet of the secondary separation module 2 is connected to the other adsorption chamber 311.

[0028] Specifically, the air inlet 111 of the primary separation module 1 is connected to the air outlet of the gas generating equipment, the outlet of the primary separation module 1 is connected to the inlet of the secondary separation module 2, the outlet of the secondary separation module 2 is connected to the inlet of the two adsorption chambers 311 in the dual-chamber adsorption tank 31 through the switching valve 32, and finally the outlet of the two adsorption chambers 311 is connected to the gas-using equipment or the collection equipment.

[0029] After the gas self-generated gas device enters the primary separation module 1 through the air inlet 111, the small flow of gas enters the inner cavity of the first cylinder 11 through the swirl guide head 12. The swirl guide head 12 guides the gas to make a spiral centrifugal motion along the inner wall of the first cylinder 11. Since the density of water is much greater than that of gas, the free liquid water carried in the gas is thrown towards the inner wall of the first cylinder 11 under the action of centrifugal inertial force, and converges and falls along the inner wall, thereby achieving the primary coarse separation of free liquid water. After being processed by the primary separation module 1, the free liquid water visible to the naked eye in the gas is basically removed, but a large amount of micron-sized suspended water mist still remains in the gas. The gas then enters the secondary separation module 2. When the gas flows through the microporous filter element 21 inside the secondary separation module 2, the micron-sized suspended water mist carried in the gas is intercepted and captured by the microporous structure of the microporous filter element 21. The water mist particles collide and converge into droplets on the microporous skeleton and then drip downwards, thereby achieving secondary fine filtration of suspended water mist. After being processed by the secondary separation module 2, the content of suspended water mist in the gas is greatly reduced, but the gas still contains gaseous water vapor molecules. The gas then enters the tertiary separation module 3 through switching valve 32, which is located between the outlet of the secondary separation module 2 and the inlet of the dual-chamber adsorption tank 31. The dual-chamber adsorption tank 31 includes two independent and parallel adsorption chambers 311, each filled with a molecular sieve adsorption layer 312. When switching valve 32 is in the first working state, the outlet of the secondary separation module 2 is connected to one of the adsorption chambers 311, and the gas enters this chamber. Residual gaseous water vapor molecules in the gas are selectively captured and adsorbed by the molecular sieve adsorption layer 312, achieving deep drying of the gaseous water vapor. When switching valve 32 is in the second working state, the outlet of the secondary separation module 2 is connected to the other adsorption chamber 311, and the gas enters the other adsorption chamber 311 for adsorption and drying of the gaseous water vapor. The two adsorption chambers 311 work alternately through the switching valve 32. When one adsorption chamber 311 is in the adsorption state, the other adsorption chamber 311 can regenerate or replace the molecular sieve adsorption layer 312. After the regeneration is completed, the switching valve 32 switches the working state, and the roles of the two adsorption chambers 311 are interchanged, thereby realizing continuous and uninterrupted gas supply.

[0030] This embodiment utilizes a three-stage gradient dehydration and drying process, consisting of a primary separation module 1, a secondary separation module 2, and a tertiary separation module 3 connected in series. This allows the gas to pass through three stages: centrifugal cyclone separation, microporous interception filtration, and molecular sieve adsorption drying. This process progressively removes free liquid water, suspended water mist, and gaseous water vapor from the gas, effectively improving dehydration and drying efficiency. Because liquid water is removed progressively in the primary and secondary separation modules, direct entry into the adsorption chamber 311 of the tertiary separation module 3 is prevented from causing the molecular sieve adsorption layer 312 to become damp and fail, thus extending the service life of the molecular sieve adsorption layer 312 and improving dehydration and drying efficiency. Furthermore, by controlling the alternating operation of the two adsorption chambers 311 via a switching valve 32, one adsorption chamber 311 can be regenerated or replaced simultaneously while the other is performing adsorption drying. This switching of adsorption chambers 311 can be achieved without stopping the system, enhancing the stability and continuity of equipment operation.

[0031] Furthermore, the outlet pressure dew point of the primary separation module 1 is +10℃; the relative humidity (RH) of the gas discharged from the outlet of the primary separation module 1 is approximately 98%. The gas generator is a nitrogen generator, which operates in a high-purity welding mode with a low flow rate of 8L / min. After being processed by the primary separation module 1, the gas has an outlet pressure dew point of +10℃ and a relative humidity (RH) of approximately 98% when discharged. Because the primary separation module 1 uses a cyclone guide head 12 to guide the gas in a spiral centrifugal motion, it only separates and removes the denser free liquid water in the gas, while having virtually no effect on the gaseous water vapor content. Therefore, the outlet pressure dew point remains constant at +10℃, and the relative humidity only slightly decreases from the saturated state at the inlet to 98%. Although the primary separation module 1 failed to lower the dew point temperature of the gas, it efficiently removed the vast majority of free liquid water from the gas, eliminating the risk of water accumulation and erosion corrosion in the pipeline. Simultaneously, it prevented a large amount of liquid water from directly impacting the microporous filter element 21 and molecular sieve adsorption layer 312 in the subsequent modules, effectively protecting the subsequent precision filter and adsorption components from being immersed in liquid water and suffering damage or pulverization. This provides a reliable pretreatment guarantee for the stable operation of the subsequent modules. Even at a low flow rate of 8 L / min, the cyclone centrifugal separation effect remained stable, with no degradation in separation performance, ensuring the complete removal of free liquid water from the low-flow-rate gas.

[0032] Please see Figures 1 to 3 In one embodiment, the primary separation module 1 further includes a water storage cup 13. The bottom of the first cylinder 11 is connected to the water storage cup 13. The water storage cup 13 is provided with a first drain outlet 131, and a drain valve 14 is provided at the first drain outlet 131. The gas self-generated gas device enters the primary separation module 1 through the air inlet 111. The airflow passes through the vortex guide head 12 and enters the inner cavity of the first cylinder 11, and performs a spiral centrifugal motion along the inner wall of the first cylinder 11. The free liquid water carried in the gas is thrown towards the inner wall of the first cylinder 11 under the action of centrifugal inertial force and converges and falls along the inner wall, flowing into the water storage cup 13 connected to the bottom of the first cylinder 11 for temporary storage. When the liquid level in the water storage cup 13 reaches a certain height or exists for a certain period of time, the drain valve 14 at the first drain outlet 131 automatically opens to drain the accumulated water. After the drainage is completed, the drain valve 14 automatically closes. After processing by the primary separation module 1, the visible free liquid water in the gas is essentially removed. It then sequentially enters the secondary separation module 2 and the tertiary separation module 3 to complete subsequent suspended water mist filtration and deep drying of gaseous water vapor. In this embodiment, by installing a water storage cup 13 and a drain valve 14 at the bottom of the first cylinder 11, the free liquid water separated by the primary separation module 1 is collected promptly and automatically discharged. This prevents water accumulation in the first cylinder 11 from affecting the cyclone centrifugal separation effect and also prevents water from being carried back into subsequent modules by the airflow, ensuring the processing effect and operational stability of the secondary and tertiary separation modules 2 and 3.

[0033] Furthermore, the drain valve 14 can be an automatic timed drain valve 14, a level-based drain valve 14, etc. When an automatic timed drain valve 14 is used, the drain valve 14 opens periodically to drain water according to a preset time interval. It has a simple structure, is easy to control, and does not require additional level detection elements, thus reducing manufacturing costs. When a level-based drain valve 14 is used, the drain valve 14 automatically opens or closes to drain water according to the actual liquid level in the water storage cup 13. Drainage is only performed when the accumulated water reaches a certain level, avoiding the loss of compressed gas caused by frequent drainage and improving gas utilization. At the same time, level-based drainage can more accurately match the actual water production, and the drainage action is highly synchronized with the actual working conditions, further improving the drainage reliability and operational stability of the water storage cup 13.

[0034] In one embodiment, the three-stage separation module 3 further includes two heating and purging components, which are respectively disposed in two adsorption chambers 311. The heating and purging components are used to remove water molecules in the molecular sieve adsorption layer 312. The three-stage separation module 3 is provided with a second drain outlet 311a. After being processed by the secondary separation module 2, the gas enters the tertiary separation module 3 through the switching valve 32. When the switching valve 32 is in the first working state, the gas enters one of the adsorption chambers 311. The gaseous water vapor molecules remaining in the gas are captured and adsorbed by the molecular sieve adsorption layer 312 in the adsorption chamber 311. The dried gas is discharged from the outlet of the adsorption chamber 311. At the same time, the other adsorption chamber 311 is in the regeneration state. The heating and purging assembly in the adsorption chamber 311 is activated to heat the molecular sieve adsorption layer 312 in the adsorption chamber 311. The water molecules adsorbed in the molecular sieve adsorption layer 312 are desorbed into water vapor under the action of high temperature. At the same time, the purging gas is introduced to carry out the water vapor generated by desorption through the second drain port 311a corresponding to the adsorption chamber 311 and discharge it, thereby realizing the regeneration of the molecular sieve adsorption layer 312. After the adsorption chamber 311 is regenerated, the switching valve 32 switches to the second working state, and the outlet of the secondary separation module 2 is connected to another adsorption chamber 311. Gas enters the regenerated adsorption chamber 311 for adsorption and drying, while the adsorption chamber 311 that was originally in the adsorption state switches to the regeneration state and begins heating and purging regeneration. The two adsorption chambers 311 work alternately in this cycle to achieve continuous gas supply. In this embodiment, by setting a separate heating and purging component for each adsorption chamber 311, the two adsorption chambers 311 can switch independently between the adsorption and regeneration states. The molecular sieve adsorption layer 312 can be regenerated online without disassembling the adsorption chambers 311, which greatly shortens the regeneration cycle. At the same time, the water vapor generated by desorption is discharged in time through the second drain port 311a by the purging gas, which avoids the water vapor being condensed in the adsorption chamber 311 and reabsorbed by the molecular sieve adsorption layer 312, ensuring the regeneration effect, effectively extending the service life of the molecular sieve adsorption layer 312, and further improving the long-term operational stability and water removal and drying efficiency of the water separation module 100.

[0035] Furthermore, the heating and purging assembly can employ electric heating and a purging gas path. An electric heating wire or rod installed inside the adsorption chamber 311 generates heat when energized, directly heating the molecular sieve adsorption layer 312. An external dry purging gas (such as a small amount of dry nitrogen or air) is introduced into the adsorption chamber 311, carrying away the water vapor generated by heating and desorption from the second drain port 311a. Alternatively, a hot air generator can be used to directly generate heated dry gas, which is then introduced into the adsorption chamber 311. This provides heat to raise the temperature of the molecular sieve and desorb moisture, and also serves as a purging medium to carry away the desorbed water vapor.

[0036] Please see Figure 1 and Figure 2In one embodiment, a third drain outlet 22 is provided at the bottom of the secondary separation module 2. After being processed by the primary separation module 1, the gas enters the secondary separation module 2. The micron-sized suspended water mist carried in the gas is intercepted and captured by the microporous filter element 21. The water mist particles collide and converge into droplets on the microporous framework and then drip down to the bottom of the secondary separation module 2 under the action of gravity, and are discharged in time through the third drain outlet 22. This avoids the accumulation of water inside the secondary separation module 2, which would affect the interception effect of the microporous filter element 21, and prevents the water from being carried into the tertiary separation module 3 by the airflow. This effectively reduces the water absorption load of the tertiary separation module 3 and further improves the service life and water removal and drying efficiency of the molecular sieve adsorption layer 312 in the tertiary separation module 3.

[0037] Furthermore, the secondary separation module 2 is internally equipped with a flow guide bracket to direct the gas to the microporous filter element 21. After being processed by the primary separation module 1, the gas enters the secondary separation module 2. The flow guide bracket guides and rectifies the incoming airflow, ensuring that the airflow is evenly distributed across the entire filtration cross-section of the microporous filter element 21. This avoids the problem of excessive filtration load and localized clogging and failure of the filter element due to concentrated airflow impacting localized areas of the microporous filter element 21. Through the guiding effect of the flow guide bracket, the gas is evenly distributed across the entire filtration area of ​​the microporous filter element 21, allowing each area of ​​the microporous filter element 21 to fully utilize its interception function, improving the utilization rate of the filtration area and the overall filtration efficiency, while extending the service life of the microporous filter element 21. Under low flow rate conditions of 8L / min, the flow guide bracket can effectively guide the low-flow gas to evenly cover the entire cross-section of the microporous filter element 21, preventing the problem of gas only passing through localized areas of the filter element while other areas remain idle due to excessively low flow rates. This ensures that the filtration performance of the microporous filter element 21 remains fully utilized even under low flow rate conditions.

[0038] Please see Figure 1 and Figure 3 In one embodiment, the vortex guide head 12 has multiple vent holes 121 communicating with the inner cavity of the first cylinder 11, and the multiple vent holes 121 are evenly distributed. After the gas self-generated gas device enters the vortex guide head 12 through the air inlet 111, it is diverted into the inner cavity of the first cylinder 11 through the multiple evenly distributed vent holes 121. Because the vent holes 121 are evenly distributed, the gas is evenly dispersed when entering the inner cavity of the first cylinder 11, so that the airflow forms a uniform and stable spiral centrifugal flow along the inner wall of the first cylinder 11, avoiding the problem of excessively high local flow velocity or airflow deviation caused by concentrated airflow, and ensuring the uniformity and stability of the centrifugal separation effect. Under the low flow rate condition of 8L / min, the evenly distributed vent holes 121 can effectively guide the low flow rate gas to fully fill the circumferential space of the inner cavity of the first cylinder 11, maintain a stable spiral centrifugal flow field, and thus ensure that the separation efficiency of free liquid water is not affected by the decrease in flow rate.

[0039] In one embodiment, the microporous filter element 21 is a sintered PE microporous filter element 21. The sintered PE microporous filter element 21 is formed by high-temperature sintering of polyethylene powder, creating a three-dimensional interconnected porous framework structure inside. When micron-sized suspended water mist carried in the gas flows through the sintered PE microporous filter element 21, the water mist particles adhere to the surface of the porous framework under inertial collision and diffusion, and converge into droplets under capillary action. The droplets then drip down the framework under gravity to the bottom of the secondary separation module 2 and are discharged, thus achieving efficient interception of suspended water mist. The sintered PE microporous filter element 21 has good chemical stability and mechanical strength, is resistant to acid and alkali corrosion, is not easily deformed or damaged, has stable performance over long-term use, and a long service life, reducing the frequency of consumable replacement and maintenance costs. Meanwhile, the sintered PE microporous filter element 21 has uniform pores and high filtration accuracy, which can effectively intercept micron-sized fine water mist particles, significantly reduce the liquid water content in the gas, provide low-humidity load air intake conditions for the molecular sieve adsorption layer 312 of the three-stage separation module 3, and further extend the service life of the molecular sieve adsorption layer 312.

[0040] In one embodiment, the pore size of the sintered PE microporous filter element 21 is 0.01 μm. When the micron-sized suspended water mist carried by the gas after processing by the primary separation module 1 flows through the sintered PE microporous filter element 21 with a pore size of 0.01 μm, the pore size is much smaller than the particle size of the suspended water mist. The water mist particles are efficiently intercepted on the porous framework surface, achieving an interception efficiency of over 99.9% for fine water mist larger than 1 μm. Only nanometer-sized gaseous water vapor molecules remain in the gas. In this embodiment, the use of a high-precision microporous filter element 21 with a 0.01 μm level achieves precise filtration of suspended water mist, significantly reducing the liquid water content entering the tertiary separation module 3. This allows the molecular sieve adsorption layer 312 of the tertiary separation module 3 to only process gaseous water vapor molecules, reducing the water absorption load by over 95% and extending the regeneration cycle by 3 to 5 times, effectively improving the deep drying efficiency and service life of the tertiary separation module 3.

[0041] In one embodiment, the molecular sieve adsorption layer 312 is a 3A molecular sieve particle packing or a 3A molecular sieve fiber packing. The pore size of the 3A molecular sieve is approximately 0.3 nm, allowing only molecules with a kinetic diameter smaller than 3A to enter its pores. Water molecules, with a kinetic diameter of approximately 2.65A, can just enter and be adsorbed, while nitrogen molecules in the gas, with a kinetic diameter of approximately 3.64A, cannot enter the pores. Therefore, the 3A molecular sieve has an extremely high selective adsorption capacity for water molecules. After the gas is processed step-by-step by the primary separation module 1 and the secondary separation module 2, the residual gaseous water vapor molecules are selectively captured and adsorbed by the nanoscale regular micropores of the 3A molecular sieve when flowing through the 3A molecular sieve adsorption layer 312, thereby achieving deep removal of gaseous water vapor. When using 3A molecular sieve granular packing, uniform gas flow channels are formed between the particles, ensuring sufficient contact between the gas and the molecular sieve and resulting in high adsorption efficiency. When using 3A molecular sieve filament packing, the filament structure has a larger specific surface area and lower air resistance, which is beneficial for sufficient contact between small flow rates of gas and the molecular sieve, making it particularly suitable for deep drying under low flow rate conditions of 8L / min. After treatment by the three-stage separation module 3, the moisture content in the outlet gas can be reduced to below 3ppm, and the pressure dew point can be stably maintained below -42℃, fully meeting the requirements for deep drying of high-purity nitrogen.

[0042] Please see Figure 1 and Figure 3 In one embodiment, a spiral centrifugal flow channel is formed on the inner wall of the first cylinder 11. After the gas enters the inner cavity of the first cylinder 11 through the swirl guide head 12, it flows in a directional spiral along the inner wall of the first cylinder 11 under the guidance of the spiral centrifugal flow channel. The spiral structure of the spiral centrifugal flow channel provides a stable guiding path for the airflow, keeping the airflow in a high-speed rotating state within the channel, thus enhancing the centrifugal separation effect. Since the inner wall surface of the spiral centrifugal flow channel is a continuous spiral curved surface, the free liquid water carried in the gas is continuously thrown towards the inner wall surface of the flow channel under the action of centrifugal inertial force, and then slides down along the wall surface of the spiral flow channel to the bottom of the cylinder. This avoids the problem of liquid water accumulating locally on the inner wall of the cylinder and being re-entrained and carried away by the airflow, thus improving the separation efficiency and removal stability of free liquid water. Under the low flow rate condition of 8L / min, the spiral centrifugal flow channel can effectively maintain the rotational kinetic energy of the airflow, preventing the problem of insufficient centrifugal force due to the decrease in flow rate, and ensuring that the separation performance of liquid water is stable and does not decay under the low flow rate condition.

[0043] According to another aspect of this utility model, this utility model also provides a gas generation device, including a gas generation unit and a water separation module 100 as described above. The outlet of the gas generation unit is connected to the inlet 111 of the primary separation module 1. The humid gas generated by the gas generation unit directly enters the primary separation module 1 of the water separation module 100 through the outlet, and flows sequentially through the primary separation module 1, the secondary separation module 2, and the tertiary separation module 3. Free liquid water, suspended water mist, and gaseous water vapor in the gas are removed stage by stage, and finally, deeply dried gas is output. In this embodiment, the gas generation unit and the water separation module 100 are directly connected, eliminating the need for additional pretreatment equipment or pipeline connection components between them. The overall structure is compact and occupies little space, reducing equipment investment costs and installation difficulty. At the same time, the humid gas generated by the gas generation unit enters the water separation module 100 for processing immediately, avoiding the problem of condensation and water accumulation during long-distance transportation of humid gas in pipelines, reducing the risk of pipeline corrosion and secondary gas pollution, and further improving the overall stability and gas quality of the gas supply system.

[0044] The above are merely exemplary embodiments of this utility model and do not limit the scope of protection of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. A water separation module, characterized in that, It includes a first-level separation module, a second-level separation module, and a third-level separation module that are connected in sequence; The first-stage separation module includes a first cylinder and a swirl guide head disposed inside the first cylinder. The first cylinder is provided with an air inlet, which is used to connect the swirl guide head and the gas generating device so that gas can enter the inner cavity of the first cylinder through the swirl guide head. The secondary separation module is equipped with a microporous filter element. The three-stage separation module includes a dual-chamber adsorption tank and a switching valve. The dual-chamber adsorption tank includes two independent adsorption chambers, each filled with a molecular sieve adsorption layer. The two adsorption chambers are connected in parallel and are connected to the two-stage separation module through the switching valve. The switching valve has a first working state and a second working state. When the switching valve is in the first working state, the outlet of the secondary separation module is connected to one of the adsorption chambers. When the switching valve is in the second working state, the outlet of the secondary separation module is connected to the other adsorption chamber.

2. The water separation module as described in claim 1, characterized in that, The primary separation module also includes a water storage cup, the bottom of the first cylinder is connected to the water storage cup, the water storage cup is provided with a first drain outlet, and a drain valve is provided at the first drain outlet.

3. The water separation module as described in claim 1, characterized in that, The three-stage separation module also includes two heating and purging components, which are respectively disposed in the two adsorption chambers. The heating and purging components are used to remove water molecules from the molecular sieve adsorption layer. The three-stage separation module is provided with a second drain outlet.

4. The water separation module as described in claim 1, characterized in that, The bottom of the secondary separation module is provided with a third drain outlet.

5. The water separation module as described in any one of claims 1 to 4, characterized in that, The swirl guide head has multiple vent holes that communicate with the inner cavity of the first cylinder, and the multiple vent holes are evenly distributed.

6. The water separation module as described in any one of claims 1 to 4, characterized in that, The microporous filter element is a sintered PE microporous filter element.

7. The water separation module as described in claim 6, characterized in that, The pore size of the sintered PE microporous filter element is 0.01 μm.

8. The water separation module as described in any one of claims 1 to 4, characterized in that, The molecular sieve adsorption layer is a 3A molecular sieve particle packing or a 3A molecular sieve fiber bundle packing.

9. The water separation module as described in claim 7, characterized in that, The inner wall of the first cylinder has a spiral centrifugal flow channel.

10. A gas generating device, characterized in that, It includes a gas generating device and a water separation module as described in any one of claims 1 to 9, wherein the gas outlet of the gas generating device is connected to the air inlet of the primary separation module.

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