Portable modular nitrogen making machine

Abstract

The utility model provides a portable modularized nitrogen making machine. The portable modularized nitrogen making machine comprises a gas inlet seat and a gas outlet seat, wherein the gas inlet seat and the gas outlet seat are respectively provided with a gas inlet channel and a gas outlet channel; the air inlet end and the air outlet end of the adsorption module are respectively communicated with the air outlet end of the air inlet channel and the air inlet end of the air outlet channel; the first connecting piece is detachably arranged at the air inlet end of the air inlet channel in a sealing manner; the second connecting piece is detachably arranged at the air outlet end of the air outlet channel in a sealed mode. Pipeline connection among a compressed air pipeline, an air inlet channel and an air inlet control valve is achieved through a first input channel, a first output channel and a first control cavity which are integrally integrated in a first connecting piece. And the second input channel, the second output channel and the second control cavity which are integrally integrated in the second connecting piece realize pipeline connection among the nitrogen pipeline, the gas outlet channel and the gas outlet control valve, so that the number of pipe fittings required by the nitrogen making machine is greatly reduced, rapid installation of the gas pipeline of the nitrogen making machine is realized, the production efficiency is improved, and the production cost is reduced. And connection points of gas pipelines can be reduced, and the gas leakage risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of modular nitrogen generators, specifically a convenient modular nitrogen generator. Background Technology

[0002] High-purity nitrogen, widely used in chemical, electronics, pharmaceutical, and food industries, is produced by pressure swing adsorption (PSA) technology. PSA is a novel gas adsorption and separation technology. Compressed air from an air compressor first enters a refrigerated dryer to remove moisture, and then enters a PSA nitrogen generation unit consisting of two adsorption towers. Specialized carbon molecular sieve adsorbents packed in the towers selectively adsorb impurity gas components such as O2 and CO2, while the product gas N2 is discharged from the top of the tower with 99% purity.

[0003] In existing technologies, modular nitrogen generators are popular in the market because they can adjust the number of adsorption modules according to the nitrogen requirements of different fields. However, the gas pipelines of traditional modular nitrogen generators are very complex, mainly including an inlet pipeline for introducing compressed air, an outlet pipeline for outputting semi-finished nitrogen to an external pressure tank, a return pipeline for returning semi-finished nitrogen to the pressure tank, an exhaust pipeline for outputting nitrogen with insufficient concentration, and a finished product pipeline for outputting finished nitrogen with sufficient concentration. Each gas pipeline is also connected to a control valve. This results in the need to connect a large number of pipe fittings during the production and installation of the nitrogen generator. This not only makes the production and installation time lengthy, but also leaves a large number of connection points in the gas pipeline after installation, greatly increasing the risk of gas leakage, reducing the service life of the nitrogen generator and maintenance costs.

[0004] The research objective of this utility model is to design a convenient modular nitrogen generator to address the problems existing in the above-mentioned prior art. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a convenient modular nitrogen generator, which can effectively solve the problems existing in the prior art.

[0006] The technical solution of this utility model is:

[0007] A portable modular nitrogen generator, comprising:

[0008] The air intake and air outlet seats are spaced apart and have separate air intake and air outlet channels inside;

[0009] An adsorption module is used to filter out nitrogen gas. The inlet and outlet ends of the adsorption module are respectively connected to the inlet seat and the outlet seat, and are respectively connected to the outlet end of the inlet channel and the inlet end of the outlet channel.

[0010] The first connector is detachably sealed to the air intake end of the air intake channel. The first connector has a first input channel and a first output channel connected at one end through a first control cavity. The other ends of the first input channel and the first output channel pass through the side wall of the first connector and are respectively connected to the output end of the compressed air pipeline and the air intake end of the air intake channel. The outer wall of the first connector has an air intake control valve with a control end located in the first control cavity for controlling the opening and closing between the first input channel and the first output channel.

[0011] The second connector is detachably sealed at the outlet end of the outlet channel. The second connector has a second input channel and a second output channel connected at one end through the second control cavity. The other ends of the second input channel and the second output channel pass through the side wall of the second connector and are respectively connected to the outlet end of the outlet channel and the inlet end of the nitrogen pipeline. The outer wall of the second connector has an outlet control valve with a control end located in the second control cavity for controlling the opening and closing of the second input channel and the second output channel.

[0012] Furthermore, the air outlet and air inlet seats are arranged vertically at intervals, and the adsorption modules are arranged in two groups and horizontally. Each group of adsorption modules includes several adsorption cylinders arranged front to back at intervals and filled with molecular sieves. The upper and lower ends of the several adsorption cylinders are respectively connected to the air outlet and air inlet seats and connected to the air outlet channel and air inlet channel. The number of air inlet channels and air outlet channels is set to two and arranged horizontally. The number of first input channels is two and the other end is respectively connected to the air inlet end of the two air inlet channels. The number of second input channels is two and the other end is respectively connected to the air outlet end of the two air outlet channels. The number of first control chamber, air inlet control valve, second control chamber and air outlet control valve are all two.

[0013] Furthermore, the first input channel includes a first main pipe extending left and right, and three first branch pipes connecting the first main pipe and extending upward to connect the output end of the compressed air pipeline and the two first control chambers respectively. One end of the first main pipe penetrates the side wall of the first connector to form a first processing hole blocked by a plug. The second output channel includes a second main pipe extending left and right, and three second branch pipes connecting the second main pipe and extending downward to connect the inlet end of the nitrogen pipeline and the two second control chambers respectively. One end of the second main pipe penetrates the side wall of the second connector to form a second processing hole blocked by a plug. The first output channel and the second input channel extend front and rear, and the first control chamber and the second control chamber extend vertically.

[0014] Furthermore, the air intake channel and the air outlet channel extend forward and backward, the first connector and the second connector are respectively installed at the front end of the air intake channel and the air outlet channel, a control cabinet is provided between the first connector and the second connector, the compressed air pipeline is located in the control cabinet and the air intake end passes through the side wall of the control cabinet, the compressed air pipeline is controlled to open and close by a compressed air control valve, and the nitrogen pipeline is located in the control cabinet and the output end passes through the side wall of the control cabinet.

[0015] Furthermore, the inlet and outlet seats are respectively provided on opposite sides of the control cabinet and the adsorption modules, with a first pressure stabilizing block and a second pressure stabilizing block located between them. Two pressure stabilizing cylinders are connected between the first and second pressure stabilizing blocks. The first pressure stabilizing block has an inlet channel and an outlet channel that connect to the lower ends of the two pressure stabilizing cylinders respectively. The second pressure stabilizing block has a connecting channel that connects to the upper ends of the two pressure stabilizing cylinders. The nitrogen pipeline includes a semi-finished product pipeline whose inlet end is connected to the other end of the second output channel and whose outlet end is connected to the inlet end of the inlet channel, and a finished product pipeline whose inlet end is connected to the outlet channel and whose outlet end passes through the side wall of the control cabinet. The finished product pipeline is connected to an exhaust pipeline controlled by an exhaust valve and a purity detection device for detecting nitrogen purity. The semi-finished product pipeline and the finished product pipeline are controlled by a semi-finished product control valve and a finished product control valve respectively.

[0016] Furthermore, the rear ends of the air inlet channel and the air outlet channel are respectively sealed with a first sealing plate and a second sealing plate. The first sealing plate has an exhaust port that is controlled to open and close by the two exhaust devices. The front wall of the second connector extends inward to provide two regeneration channels that are respectively connected to the two second input channels through the two second branch cavities. The front side of the second connector is provided with a front regeneration pipeline and two front pneumatic control valves that are respectively connected between the two ends of the front regeneration pipeline and the two regeneration channels. The two front pneumatic control valves are used to control the gas flow rate of the front regeneration pipeline.

[0017] Furthermore, the rear side of the second sealing plate is provided with a post-regeneration pipeline and two post-pneumatic control valves respectively connected to the rear ends of the two gas outlet channels and the two ends of the post-regeneration pipeline. The two post-pneumatic control valves are used to control the gas flow rate of the post-regeneration pipeline.

[0018] Therefore, the beneficial effects of this utility model are:

[0019] 1. By adding the first and second connectors, the existing pipe connections between compressed air pipelines, intake channels, and intake control valves are replaced with an integrated first input channel, first output channel, and first control chamber within the first connector. Similarly, the nitrogen pipeline connections between nitrogen pipelines, exhaust channels, and exhaust control valves are replaced with an integrated second input channel, second output channel, and second control chamber within the second connector. This significantly reduces the number of pipes required for the nitrogen generator. During production and installation, the first and second connectors can be quickly installed before the remaining pipelines are installed, enabling rapid installation of the nitrogen generator's gas pipelines. This improves installation convenience and production efficiency. Furthermore, after installation, the number of connection points in the gas pipelines is greatly reduced, lowering the risk of leakage, extending the service life of the nitrogen generator, and reducing maintenance costs.

[0020] 2. Through the structural layout of each channel and control cavity, the first and second connectors can be generated by drilling holes inward from the outer wall of the existing sealing plate. Specifically, taking the first connector as an example, a deep hole is drilled inward from the first machining hole on the left side of the sealing plate to form the first main pipe cavity. Three first branch pipe cavities are formed by drilling holes downward from the top of the sealing plate. Two first control cavities are formed by expanding the upper ends of the first branch pipe cavities on the left and right sides. Two first output channels are formed by drilling holes forward from the rear side of the sealing plate. Thus, the first and second connectors can be produced using the existing structure, improving the utilization rate of existing nitrogen generator parts and reducing production costs.

[0021] 3. The existing pressure stabilizing tank is built into the nitrogen generator and divided into two pressure stabilizing cylinders. The gas path between the two pressure stabilizing cylinders and the semi-finished product pipeline and the finished product pipeline, as well as between the two pressure stabilizing cylinders, is achieved through the setting of the first and second pressure stabilizing blocks. This greatly shortens the length of the semi-finished product pipeline. Furthermore, the pressure stabilizing cylinders are directly connected to the finished product pipeline without the need to add a return gas pipeline, which further reduces the overall number of gas pipelines and connection points of the nitrogen generator. At the same time, the setting of the second pressure stabilizing block can avoid increasing the overall number of pipes in the nitrogen generator by connecting the two pressure stabilizing cylinders through pipelines.

[0022] 4. By adding pre-regeneration and post-regeneration pipelines, a working mode of alternating adsorption and regeneration of the two adsorption modules can be achieved. Specifically, when the left adsorption module is in operation, the gas inlet of the right adsorption module is closed. A large amount of nitrogen generated by the left adsorption module is input into the nitrogen pipeline, gradually forming finished nitrogen. A small amount enters the right adsorption module through the pre-regeneration and post-regeneration channels to purge the carbon molecular sieve within it. This causes the oxygen molecules adsorbed on the carbon molecular sieve to desorb and then be discharged through the exhaust device on the left side of the nitrogen generator, thus regenerating the carbon molecular sieve in the right adsorption module. The alternating adsorption and regeneration operation of the two adsorption modules lasts for 50 seconds, allowing for continuous adsorption and regeneration. This prevents the carbon molecular sieve from deteriorating under long-term adsorption conditions, improving the nitrogen generator's efficiency while ensuring the quality of nitrogen production. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a convenient modular nitrogen generator.

[0024] Figure 2 for Figure 1 A schematic diagram of the structure after removing the cabinet shell.

[0025] Figure 3 This is a schematic diagram of the exploded structure of a convenient modular nitrogen generator after removing the adsorption module and the pressure stabilizing cylinder.

[0026] Figure 4 This is an exploded structural diagram of the first and second connecting parts.

[0027] Figure 5 for Figure 4 A structural diagram from the rear view.

[0028] Figure 6 This is a cross-sectional structural diagram of the first and second connecting parts in an exploded state.

[0029] Figure 7 This is a schematic diagram of the exploded structure of the air inlet and outlet seats.

[0030] Figure 8 This is a schematic diagram of the structure of the first voltage stabilizer, the second voltage stabilizer, and the voltage stabilizer cylinder.

[0031] Figure 9 This is a cross-sectional structural diagram of the first voltage stabilizer block, the second voltage stabilizer block, and the voltage stabilizer cylinder. Detailed Implementation

[0032] To facilitate understanding by those skilled in the art, the structure of this utility model will now be described in further detail with reference to the accompanying drawings:

[0033] refer to Figure 1-9 A portable modular nitrogen generator, comprising:

[0034] The air inlet seat 1 and the air outlet seat 2 are spaced apart and have an air inlet channel 11 and an air outlet channel 21 respectively inside;

[0035] The adsorption module 3 is used to filter out nitrogen gas. The inlet and outlet ends of the adsorption module 3 are respectively connected to the inlet seat 1 and the outlet seat 2, and are respectively connected to the outlet end of the inlet channel 11 and the inlet end of the outlet channel 21.

[0036] The first connector 4 is detachably sealed to the air intake end of the air intake channel 11. The first connector 4 has a first input channel 42 and a first output channel 43 connected at one end through the first control cavity 41. The other ends of the first input channel 42 and the first output channel 43 pass through the side wall of the first connector 4 and are respectively connected to the output end of the compressed air pipeline 6 and the air intake end of the air intake channel 11. The outer wall of the first connector 4 has an air intake control valve 44 with a control end located in the first control cavity 41 and used to control the opening and closing between the first input channel 42 and the first output channel 43.

[0037] The second connector 5 is detachably sealed to the outlet end of the outlet channel 21. The second connector 5 has a second input channel 52 and a second output channel 53 connected at one end via a second control cavity 51. The other ends of the second input channel 52 and the second output channel 53 respectively penetrate the side wall of the second connector 5 and connect to the outlet end of the outlet channel 21 and the inlet end of the nitrogen pipeline 7. The outer wall of the second connector 5 has an outlet control valve 54 with a control end located within the second control cavity 51, used to control the opening and closing of the second input channel 52 and the second output channel 53. Specifically, both the first connector 4 and the second connector 5 are designed as sealing plates. The control valve mentioned in this application can be an existing automatic control valve.

[0038] The above structure, through the addition of the first connector 4 and the second connector 5, replaces the pipe connection between the compressed air pipeline 6, the air intake channel 11, and the air intake control valve 44 in the prior art with the first input channel 42, the first output channel 43, and the first control chamber 41 integrated within the first connector 4. Similarly, it replaces the pipe connection between the nitrogen pipeline 7, the air outlet channel 21, and the air outlet control valve 54 with the second input channel 52, the second output channel 53, and the second control chamber 51 integrated within the second connector 5. This significantly reduces the number of pipes required for the nitrogen generator. During production and installation, the first connector 4 and the second connector 5 can be quickly installed before the remaining pipes are installed, enabling rapid installation of the nitrogen generator's gas pipelines. This improves installation convenience and production efficiency. Furthermore, after installation, it greatly reduces the number of connection points in the gas pipelines, lowers the risk of leakage, extends the service life of the nitrogen generator, and reduces maintenance costs.

[0039] To improve the nitrogen generation efficiency of the nitrogen generator, the outlet seat 2 and inlet seat 1 are arranged vertically at intervals. Two sets of adsorption modules 3 are arranged horizontally. Each set of adsorption modules 3 includes several adsorption cylinders 31 arranged horizontally at intervals and filled with molecular sieves. Specifically, the molecular sieves are carbon molecular sieves. The upper and lower ends of the adsorption cylinders 31 are connected to the outlet seat 2 and inlet seat 1, respectively, and connect to the outlet channel 21 and inlet channel 11. Two inlet channels 11 and two outlet channels 21 are provided, arranged horizontally. Two first input channels 42 are provided, with their other ends connected to the inlet ends of the two inlet channels 11. Two second input channels 52 are provided, with their other ends connected to the outlet ends of the two outlet channels 21. Two first control chambers 41, two inlet control valves 44, two second control chambers 51, and two outlet control valves 54 are provided. Therefore, the overall nitrogen generation efficiency of the nitrogen generator can be improved by setting up two sets of adsorption modules 3.

[0040] To reduce production costs, the connectors are not produced using a high-cost mold-making and integrated casting method. Therefore, to create the connectors by drilling holes in the existing plate-shaped sealing plate, the first input channel 42 includes a first main pipe cavity 421 extending horizontally, and three first branch cavities 422 that connect to the first main pipe cavity 421 and extend upward to connect to the output end of the compressed air pipeline 6 and the two first control cavities 41 respectively. One end of the first main pipe cavity 421 extends laterally through the side wall of the first connector 4 to form a first processing hole 4211 that is blocked by a plug (not shown in the figure). The second output channel 53 includes a second main pipe cavity 531 extending horizontally, and three second branch cavities 532 that connect to the second main pipe cavity 531 and extend downward to connect to the inlet end of the nitrogen pipeline 7 and the two second control cavities 51 respectively. One end of the second main pipe cavity 531 extends laterally through the side wall of the second connector 5 to form a second processing hole 5311 that is blocked by a plug. The first output channel 43 and the second input channel 52 extend front and rear, and the first control cavity 41 and the second control cavity 51 extend vertically. The above structure, through the structural layout of each channel and control cavity, allows the first connector 4 and the second connector 5 to be generated by drilling holes inward from the outer wall of the existing sealing plate. Specifically, taking the first connector 4 as an example, a deep hole is drilled inward from the first machining hole 4211 on the left side of the sealing plate to form the first main pipe cavity 421. A hole is drilled downward from the top of the sealing plate to form three first branch cavities 422. After expanding the upper ends of the first branch cavities 422 on the left and right sides, two first control cavities 41 are formed. A hole is drilled forward from the rear side of the sealing plate to form two first output channels 43. Thus, the first connector 4 and the second connector 5 can be produced using the existing structure, improving the utilization rate of existing nitrogen generator parts and reducing production costs.

[0041] To improve the compactness of the nitrogen generator, the inlet channel 11 and outlet channel 21 extend forward and backward. The first connector 4 and the second connector 5 are respectively installed at the front ends of the inlet channel 11 and the outlet channel 21. A control cabinet 8 is located between the first connector 4 and the second connector 5. The compressed air pipeline 6 is located inside the control cabinet 8, with its inlet end penetrating through the side wall of the control cabinet 8. The compressed air pipeline 6 is controlled to open and close by a compressed air control valve 61. The nitrogen pipeline 7 is located inside the control cabinet 8, with its outlet end penetrating through the side wall of the control cabinet 8. This concentrates all the gas pipeline structure of the nitrogen generator within the front control cabinet 8, improving the compactness of the nitrogen generator and reducing pipeline losses.

[0042] In existing technologies, the pressure stabilizing tank for semi-finished nitrogen is generally placed externally. This necessitates long-distance transportation of the semi-finished product pipeline 71 and the return gas pipeline of the nitrogen generator, increasing the overall pipeline length and the number of connection points with leakage risks. Therefore, to further reduce the gas pipeline length of the nitrogen generator, a first pressure stabilizing block 12 and a second pressure stabilizing block 22 are respectively provided on opposite sides of the inlet seat 1 and the outlet seat 2, located between the control cabinet 8 and several adsorption modules 3. Two pressure stabilizing cylinders 9 are connected between the first pressure stabilizing block 12 and the second pressure stabilizing block 22. The first pressure stabilizing block 12 has an inlet channel 121 and an outlet channel 122 respectively connecting the lower ends of the two pressure stabilizing cylinders 9. The second pressure stabilizing block 22... The 2 is provided with a connecting channel 221 connecting the upper ends of the two pressure stabilizing cylinders 9. The nitrogen pipeline 7 includes a semi-finished product pipeline 71 with its inlet end connected to the other end of the second output channel 53 and its outlet end connected to the inlet end of the inlet channel 121, and a finished product pipeline 72 with its inlet end connected to the outlet end of the outlet channel 122 and its outlet end penetrating through the side wall of the control cabinet 8. The finished product pipeline 72 is connected to an exhaust pipeline 73 controlled by an exhaust valve 731 and a purity detection device for detecting the purity of nitrogen. Specifically, the purity detection device is a nitrogen purity analyzer. The semi-finished product pipeline 71 and the finished product pipeline 72 are controlled by a semi-finished product control valve 711 and a finished product control valve 721, respectively. The above structure integrates the existing pressure stabilizing tank into the nitrogen generator and divides it into two pressure stabilizing cylinders 9. The first pressure stabilizing block 12 and the second pressure stabilizing block 22 are used to connect the two pressure stabilizing cylinders 9 with the semi-finished product pipeline 71 and the finished product pipeline 72, as well as the gas path between the two pressure stabilizing cylinders 9. This greatly shortens the length of the semi-finished product pipeline 71. Furthermore, the pressure stabilizing cylinder 9 is directly connected to the finished product pipeline 72 without the need to add a return gas pipeline, which further reduces the overall number of gas pipelines and connection points of the nitrogen generator. At the same time, the second pressure stabilizing block 22 can avoid increasing the overall number of pipes in the nitrogen generator by connecting the two pressure stabilizing cylinders 9 through pipelines.

[0043] To further improve the nitrogen generation efficiency of the nitrogen generator, the rear ends of the inlet channel 11 and the outlet channel 21 are respectively sealed with a first sealing plate 13 and a second sealing plate 23. The first sealing plate 13 has an exhaust port that is controlled to open and close by two exhaust devices 14. The front wall of the second connector 5 extends inward with two regeneration channels 55 that are respectively connected to the two second input channels 52 through two second branch cavities 532. The front side of the second connector 5 is provided with a front regeneration pipeline 56 and two front pneumatic control valves 57 that are respectively connected between the two ends of the front regeneration pipeline 56 and the two regeneration channels 55. The two front pneumatic control valves 57 are used to control the gas flow rate of the front regeneration pipeline 56. The rear side of the second sealing plate 23 is provided with a rear regeneration pipeline 24 and two rear pneumatic control valves 25 that are respectively connected to the rear ends of the two outlet channels 21 and the two ends of the rear regeneration pipeline 24. The two rear pneumatic control valves 25 are used to control the gas flow rate of the rear regeneration pipeline 24. By adding the pre-regeneration pipe 56 and the post-regeneration pipe, the two adsorption modules 3 can work in an alternating adsorption and regeneration mode. Specifically, when the left adsorption module 3 is in operation, the right adsorption module 3 is closed. A large amount of nitrogen generated by the left adsorption module 3 is input into the nitrogen pipeline 7, gradually forming finished nitrogen. A small amount enters the right adsorption module 3 through the pre-regeneration and post-regeneration channels to purge the carbon molecular sieve within it. This causes the oxygen molecules adsorbed on the carbon molecular sieve to desorb and then be discharged through the exhaust device 14 on the left side of the nitrogen generator, thus regenerating the carbon molecular sieve in the right adsorption module 3. The alternating adsorption and regeneration of the two adsorption modules 3 lasts for 50 seconds, allowing them to continuously perform adsorption and regeneration. This prevents the carbon molecular sieve from becoming less effective under long-term adsorption conditions, improving the nitrogen generator's efficiency while ensuring nitrogen production quality.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the 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 convenient modular nitrogen generator, characterized in that, include: An air inlet seat (1) and an air outlet seat (2) are spaced apart and have an air inlet channel (11) and an air outlet channel (21) respectively inside. The adsorption module (3) is used to filter out nitrogen gas. The inlet and outlet of the adsorption module (3) are respectively connected to the inlet seat (1) and the outlet seat (2) and respectively connected to the outlet of the inlet channel (11) and the inlet of the outlet channel (21). The first connector (4) is detachably sealed at the air inlet end of the air inlet channel (11). The first connector (4) has a first input channel (42) and a first output channel (43) connected at one end through the first control cavity (41). The other ends of the first input channel (42) and the first output channel (43) pass through the side wall of the first connector (4) and are respectively connected to the output end of the compressed air pipeline (6) and the air inlet end of the air inlet channel (11). The outer wall of the first connector (4) has an air inlet control valve (44) with the control end located in the first control cavity (41) and used to control the opening and closing between the first input channel (42) and the first output channel (43). The second connector (5) is detachably sealed at the outlet end of the outlet channel (21). The second connector (5) has a second input channel (52) and a second output channel (53) connected at one end through the second control cavity (51). The other ends of the second input channel (52) and the second output channel (53) pass through the side wall of the second connector (5) and are respectively connected to the outlet end of the outlet channel (21) and the inlet end of the nitrogen pipeline (7). The outer wall of the second connector (5) has an outlet control valve (54) with a control end located in the second control cavity (51) for controlling the opening and closing between the second input channel (52) and the second output channel (53).

2. The portable modular nitrogen generator as described in claim 1, characterized in that, The air outlet seat (2) and air inlet seat (1) are arranged vertically at intervals. The adsorption module (3) is arranged in two groups and distributed horizontally. Each group of adsorption modules (3) includes several adsorption cylinders (31) arranged vertically at intervals and filled with molecular sieves. The upper and lower ends of the several adsorption cylinders (31) are respectively connected to the air outlet seat (2) and air inlet seat (1) and connected to the air outlet channel (21) and air inlet channel (11). The number of air inlet channel (11) and air outlet channel (21) is set to two and arranged horizontally at intervals. The number of the first input channel (42) is two and the other end is respectively connected to the air inlet end of the two air inlet channels (11). The number of the second input channel (52) is two and the other end is respectively connected to the air outlet end of the two air outlet channels (21). The number of the first control chamber (41), air inlet control valve (44), second control chamber (51) and air outlet control valve (54) is two.

3. The portable modular nitrogen generator as described in claim 2, characterized in that, The first input channel (42) includes a first main pipe cavity (421) extending left and right, and three first branch cavities (422) that connect to the first main pipe cavity (421) and extend upward to connect to the output end of the compressed air pipeline (6) and the two first control cavities (41). One end of the first main pipe cavity (421) extends laterally through the side wall of the first connector (4) to form a first processing hole (4211) blocked by a plug. The second output channel (53) includes a second main pipe cavity (531) extending left and right, and three second branch cavities (532) that connect to the second main pipe cavity (531) and extend downward to connect to the inlet end of the nitrogen pipeline (7) and the two second control cavities (51). One end of the second main pipe cavity (531) extends laterally through the side wall of the second connector (5) to form a second processing hole (5311) blocked by a plug. The first output channel (43) and the second input channel (52) extend forward and backward, and the first control cavity (41) and the second control cavity (51) extend vertically.

4. A convenient modular nitrogen generator as described in claim 3, characterized in that, The air intake channel (11) and the air outlet channel (21) extend forward and backward. The first connector (4) and the second connector (5) are respectively installed at the front end of the air intake channel (11) and the air outlet channel (21). A control cabinet (8) is provided between the first connector (4) and the second connector (5). The compressed air pipeline (6) is located inside the control cabinet (8) and its intake end penetrates through the side wall of the control cabinet (8). The compressed air pipeline (6) is controlled to open and close by the compressed air control valve (61). The nitrogen pipeline (7) is located inside the control cabinet (8) and its output end penetrates through the side wall of the control cabinet (8).

5. A convenient modular nitrogen generator as described in claim 4, characterized in that, On opposite sides of the air inlet (1) and air outlet (2), there are respectively a first pressure stabilizing block (12) and a second pressure stabilizing block (22) located between the control cabinet (8) and several adsorption modules (3). Two pressure stabilizing cylinders (9) are connected between the first pressure stabilizing block (12) and the second pressure stabilizing block (22). The first pressure stabilizing block (12) has an air inlet channel (121) and an air outlet channel (122) that respectively connect the lower ends of the two pressure stabilizing cylinders (9). The second pressure stabilizing block (22) has a connecting channel (221) that connects the upper ends of the two pressure stabilizing cylinders (9). The nitrogen pipeline (7) The system includes a semi-finished product pipeline (71) whose inlet end is connected to the other end of the second output channel (53) and whose outlet end is connected to the inlet end of the inlet channel (121), and a finished product pipeline (72) whose inlet end is connected to the outlet channel (122) and whose outlet end passes through the side wall of the control cabinet (8). The finished product pipeline (72) is connected to an exhaust pipeline (73) controlled by an exhaust valve (731) and a purity detection device for detecting the purity of nitrogen. The semi-finished product pipeline (71) and the finished product pipeline (72) are controlled by a semi-finished product control valve (711) and a finished product control valve (721), respectively.

6. A convenient modular nitrogen generator as described in claim 4, characterized in that, The rear ends of the air inlet channel (11) and the air outlet channel (21) are respectively sealed with a first sealing plate (13) and a second sealing plate (23). The first sealing plate (13) is provided with an exhaust port that is controlled to open and close by two exhaust devices (14). The front wall of the second connector (5) extends inward and is provided with two regeneration channels (55) that are connected to the two second input channels (52) through two second branch cavities (532). The front side of the second connector (5) is provided with a front regeneration pipeline (56) and two front pneumatic control valves (57) that are respectively connected between the two ends of the front regeneration pipeline (56) and the two regeneration channels (55). The two front pneumatic control valves (57) are used to control the gas flow of the front regeneration pipeline (56).

7. A convenient modular nitrogen generator as described in claim 6, characterized in that, The rear side of the second sealing plate (23) is provided with a post-regeneration pipeline (24) and two post-pneumatic control valves (25) respectively connected to the rear ends of the two gas outlet channels (21) and the two ends of the post-regeneration pipeline (24). The two post-pneumatic control valves (25) are used to control the gas flow rate of the post-regeneration pipeline (24).

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