Main machine modularized oxygen generation system

Abstract

The invention belongs to the technical field of oxygen production equipment, and particularly relates to a main machine modularized oxygen production system. The oxygen generation system comprises an air compressor, a freezing dryer, an air tank, m ordinary oxygen modules, n pure oxygen modules and a quick connection interface; the quick connection interface comprises an air inlet joint and a common oxygen outlet joint which are arranged on the common oxygen module, and a pure oxygen module air inlet joint and a pure oxygen module air outlet joint which are arranged on the pure oxygen module; an air outlet of the air tank is connected with air inlets of the m ordinary oxygen modules through air inlet joints; pure oxygen outlets of the n pure oxygen modules are connected with an air inlet of an oxygen tank through pure oxygen module air outlet connectors. In the m ordinary oxygen modules and the n pure oxygen modules, ordinary oxygen outlets of the ordinary oxygen modules are connected with pure oxygen module air inlet joints of the pure oxygen modules through ordinary oxygen and pure oxygen connecting pipelines. Main components such as a separation assembly and a pneumatic valve of the oxygen generation system are integrated and modularized, and capacity expansion and assembly are facilitated in the specific using process.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of oxygen production equipment, and specifically relates to a main machine modular oxygen production system. BACKGROUND

[0002] In the field of medical oxygen production, a traditional oxygen production system generally adopts a whole structure, mainly including an air compressor (air compressor), a cold dryer, a gas separation assembly, a valve group and a pipeline integrated in a fixed frame. This design makes the system run as an indivisible whole, and a common implementation scheme includes a pressure swing adsorption (PSA) oxygen generator, which can produce oxygen with a fixed flow (such as 20 m 3 / h) and a fixed purity (93%). The scheme provides compressed air through the air compressor, dehumidifies the compressed air through the cold dryer, separates oxygen through the gas separation assembly, and finally outputs the oxygen to an oxygen terminal. However, this whole structure has the following inherent defects:

[0003] 1. Difficult to expand: when the oxygen demand of a hospital increases (for example, from 15 m 3 / h to 80 m 3 / h), the entire device must be replaced or a new system must be added, resulting in high modification costs and long downtime.

[0004] 2. Fixed energy consumption: the system operating power cannot be adjusted according to the oxygen peak and valley dynamics, and the system still runs at full power during low demand periods, resulting in energy waste.

[0005] 3. Single purity: the same device can only output single-purity oxygen (usually 93% pure oxygen), and cannot simultaneously meet the clinical needs of ordinary oxygen-enriched air (93%) and medical oxygen (99.5%); if medical oxygen is needed, an independent system must be deployed.

[0006] 4. Complex upgrade: adding medical oxygen supply function (such as upgrading from 93% to 99.5%) requires replacing the oxygen production main machine, modifying the overall pipeline, valves and machine room layout, which is a large amount of work and has poor compatibility. SUMMARY

[0007] The purpose of the present application is to overcome the defects of the prior art and provide a main machine modular oxygen production system. The present application integrates the separation assembly and other main components such as pneumatic valves of the oxygen production system into a modular form, which is convenient for expansion and assembly in specific use.

[0008] To achieve the above purpose, the technical scheme of the present application is as follows:

[0009] A main machine modular oxygen production system, the oxygen production system comprising an air compressor, a cold dryer, an air tank, m pure oxygen modules, n pure oxygen modules and a quick connection interface.

[0010] The air outlet of the air compressor is connected to the air inlet of the cold dryer, and the air outlet of the cold dryer is connected to the air inlet of the air tank.

[0011] The quick connection interface comprises an air inlet joint and an air outlet joint of the oxygen module arranged on the oxygen module, and an oxygen module inlet joint and an oxygen module outlet joint of the pure oxygen module arranged on the pure oxygen module.

[0012] The air outlet of the air tank is connected to the air inlets of the m oxygen modules through the air inlet joint, and the oxygen outlets of the n pure oxygen modules are connected to the air inlets of the oxygen tank through the oxygen module outlet joint.

[0013] Among the m oxygen modules and the n pure oxygen modules, the oxygen outlet of the oxygen module is connected to the oxygen module inlet joint of the pure oxygen module through the oxygen-pure oxygen connection pipeline.

[0014] Preferably, the oxygen module comprises an oxygen module shell, an oxygen gas separation assembly, an oxygen integrated valve assembly, an oxygen control gas circuit, an oxygen main machine pipeline and an electric box controller.

[0015] The oxygen gas separation assembly, the oxygen integrated valve assembly, the oxygen control gas circuit, the oxygen main machine pipeline and the electric box controller are arranged in the oxygen module shell.

[0016] The oxygen gas separation assembly is used for separating oxygen from air.

[0017] The oxygen integrated valve assembly integrates the air inlet valve, the pressure equalizing valve, the oxygen production / cleaning valve and the exhaust valve required by the oxygen gas separation assembly, and is connected to the oxygen gas separation assembly through a pipeline.

[0018] The oxygen main machine pipeline comprises a quick connection interface arranged on the oxygen module shell, and the oxygen gas separation assembly and the oxygen integrated valve assembly.

[0019] The oxygen control gas circuit is used for conveying control oxygen integrated valve assembly control gas.

[0020] The electric box controller is used for operation monitoring, fault alarm and man-machine interaction of the oxygen production system.

[0021] Preferably, the pure oxygen module comprises a pure oxygen module shell, a pure oxygen gas separation assembly, a pure oxygen integrated valve assembly, a pure oxygen control gas circuit and a pure oxygen main machine pipeline.

[0022] The pure oxygen gas separation assembly, the pure oxygen integrated valve assembly, the pure oxygen control gas circuit and the pure oxygen main machine pipeline are arranged in the pure oxygen module shell.

[0023] The pure oxygen gas separation assembly is used for secondary purification of oxygen to produce 99.5% pure oxygen.

[0024] The pure oxygen integrated valve assembly integrates a secondary purification gas path and a pure oxygen control gas path.

[0025] The pure oxygen main pipe line comprises a pure oxygen gas separation assembly, a pure oxygen integrated valve assembly and a quick connection interface arranged on the pure oxygen module shell.

[0026] Preferably, a booster is arranged between the pure oxygen outlets of the n pure oxygen modules and the gas inlets of the oxygen tank.

[0027] Preferably, a circulating compressor is arranged in the pure oxygen module to re-pressurize the intermediate process gas and return it to the pure oxygen module for purification.

[0028] The pure oxygen module of the present application uses at least one, and m is ≥1; the pure oxygen module can not be used, that is, n of the n pure oxygen modules can be 0.

[0029] The present application can adopt two operation modes:

[0030] 1. The general oxygen mode, the general oxygen module outputs 93% oxygen to the terminal; in this mode, single module operation or multi-module parallel operation can be adopted;

[0031] Single module operation: the compressed air output by the air compressor is treated by the cold dryer and then enters the gas separation assembly of the general oxygen module, and 93% oxygen is produced by adsorption separation;

[0032] Multi-module parallel operation: the compressed air output by the air compressor is treated by the cold dryer and then connected to the quick connection interfaces of the m general oxygen modules (m=1 to 4) through the main pipe line distributor, and the total capacity is 15×m Nm 3 / h or 20×m Nm 3 / h;

[0033] 2. The pure oxygen mode: the pure oxygen module is connected in series with the general oxygen module, and the general oxygen module outputs 99.5% oxygen to the terminal;

[0034] Single module operation: the compressed air output by the air compressor is treated by the cold dryer and then enters the gas separation assembly of the general oxygen module, and 93% oxygen is produced by adsorption separation; the 93% oxygen of the general oxygen module is used as the input gas source of the pure oxygen module, and 99.5% oxygen is output after secondary purification;

[0035] Multi-module parallel operation: the compressed air output by the air compressor is treated by the cold dryer and then connected to the quick connection interfaces of the m general oxygen modules (m=1 to 4) through the main pipe line distributor, and the total capacity is 15×m Nm 3 / h or 20×m Nm 393% oxygen module of the general oxygen module is taken as the input gas source of the pure oxygen module, and 99.5% oxygen is output after secondary purification. In parallel operation of multiple modules, one general oxygen module is correspondingly provided with one pure oxygen module, one pair of general oxygen module and pure oxygen module is provided in series, multiple general oxygen modules are provided in parallel, and multiple pure oxygen modules are also provided in parallel.

[0036] When the general oxygen module and the pure oxygen module are simultaneously provided in the oxygen production system, the control valve (such as a three-way valve) in the integrated valve group can remotely control the switching of the oxygen output path to control the concentration of the output oxygen, and the purity of 93% and 99.5% can be freely switched.

[0037] The technical effects of the present application are:

[0038] 1. The present application designs the main structure (general oxygen and pure oxygen) of the oxygen production system into a modularization through the same shape and structure of the shell and the setting of the quick connection interface, and the modules are connected through the quick connection interface, so that the use is convenient and the expansion is convenient.

[0039] 2. Dynamic energy saving: when the air compressor is a frequency conversion device, the oxygen production system automatically starts and stops the number of modules according to the hospital oxygen peak and valley. Only the necessary modules are run during the oxygen valley, which can greatly reduce the energy consumption.

[0040] 3. Seamless upgrade: when the hospital has installed a general oxygen module and needs to increase high-purity oxygen supply, the pure oxygen module is directly connected in series and the circulating compressor and booster are installed to realize 99.5% oxygen supply;

[0041] 4. Double mode free switching: through valve control, 93% general oxygen or 99.5% pure oxygen can be output as needed in the same system to meet diversified clinical needs. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 is a structural schematic diagram of the general oxygen module of the present application;

[0043] Figure 2 is a structural schematic diagram of the pure oxygen module of the present application;

[0044] Figure 3 is a schematic diagram of the internal structure of the general oxygen module of the present application;

[0045] Figure 4 is a schematic diagram of the internal structure of the general oxygen module of the present application in another direction;

[0046] Figure 5 is a schematic diagram of the internal structure of the pure oxygen module of the present application;

[0047] Figure 6 is a schematic diagram of the internal structure of the general oxygen module of the present application;

[0048] Figure 7 This is a front structural diagram of the parallel arrangement of the general oxygen module and the pure oxygen module in this invention;

[0049] Figure 8 This is a schematic diagram of the rear structure of the parallel arrangement of the general oxygen module and the pure oxygen module in this invention;

[0050] Figure 9 This is a diagram illustrating one embodiment of the oxygen generation system of the present invention;

[0051] Figure 10 This is a diagram illustrating another embodiment of the oxygen generation system of the present invention;

[0052] Figure 11 This is a diagram illustrating another embodiment of the oxygen generation system of the present invention;

[0053] Figure label:

[0054] 1. Standard oxygen module; 2. Pure oxygen module; 3. Air compressor; 4. Refrigerated dryer; 5. Air tank; 6. Oxygen tank; 7. Circulating compressor; 8. Booster compressor;

[0055] 11. Oxygen module housing; 12. Oxygen gas separation assembly; 13. Oxygen integrated valve assembly; 14. Oxygen control gas circuit; 15. Oxygen main unit piping; 16. Electrical control box; 17. Air inlet connector; 18. Oxygen outlet connector;

[0056] 21. Pure oxygen module housing; 22. Pure oxygen gas separation assembly; 23. Pure oxygen integrated valve assembly; 24. Pure oxygen control gas circuit; 25. Pure oxygen main unit pipeline; 26. Ordinary oxygen and pure oxygen connection pipeline; 27. Pure oxygen module outlet connector; 28. Pure oxygen module inlet connector. Detailed Implementation

[0057] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0058] Example 1

[0059] The modular oxygen generator of the present invention comprises the following components:

[0060] like Figures 1-8 As shown, oxygenation module 1:

[0061] like Figure 1 As shown, the outer shell 11 of the oxygenation module features a standardized design, providing mechanical protection and structural support, facilitating the installation and parallel connection of various components of the oxygenation module. The overall shape is preferably rectangular to facilitate side-by-side installation.

[0062] like Figures 3-4As shown, the oxygen gas separation assembly 12: the core functional assembly, adopts PSA (pressure swing adsorption) technology, contains molecular sieve adsorption tower, buffer tank, etc., and is used for separating oxygen from air. The oxygen production capacity of a single module is standardized (15 Nm 3 / h or 20 Nm 3 / h), and the connection of components such as the molecular sieve adsorption tower and the buffer tank is a conventional connection mode.

[0063] The oxygen integrated valve assembly 13: all key valves (such as air inlet valve, pressure equalization valve, oxygen production / cleaning valve, exhaust valve, etc. pneumatic angle valve (or pneumatic shuttle valve), and solenoid valve, which is used to control the gas circuit, and the pneumatic angle valve is used for the integrated valve block) required for controlling the operation of the oxygen gas separation assembly 12 are highly integrated on a compact valve block. The valve block is directly connected with the oxygen gas separation assembly through stainless steel pipes, greatly reducing the internal connection points. It contains control valves (such as three-way valves and solenoid valves) for adjusting the gas flow path and pressure, enabling the start / stop and direction control of oxygen output.

[0064] The oxygen control gas circuit 14: is used to transport the control gas of the pneumatic valve in the oxygen integrated valve assembly, and is also used to transport the control gas of other pneumatic control valves in the oxygen module.

[0065] The oxygen main pipe 15: in the oxygen module shell 11, the pipe and control gas circuit required for connecting the oxygen gas separation assembly, the oxygen integrated valve group, and the quick connection interface provided on the oxygen module shell 11 as the standardized input / output interface (such as air inlet, oxygen outlet). These pipes are prefabricated in the factory and tested to ensure sealing and reliability.

[0066] The electric box controller 16: the whole machine operation monitoring, fault alarm and man-machine interaction of the oxygen generation system. (Each oxygen generation system only needs a set of electric box controller).

[0067] The oxygen outlet connector 18: is used to connect the pure oxygen module. In actual application, when the pure oxygen module is not needed, the oxygen outlet connector 18 is connected with the oxygen tank; when the oxygen module and the pure oxygen module need to be connected, the oxygen outlet connector 18 is first removed, and the oxygen outlet is connected with the pure oxygen module inlet through the oxygen-pure oxygen connecting pipe 26, as shown in Figure 8 .

[0068] After the single oxygen module is connected with the air compressor and the cold dryer, it can be independently operated to produce oxygen.

[0069] As shown in Figure 2 , 5 -8, the pure oxygen module 2:

[0070] The appearance and size of the pure oxygen module are completely consistent with those of the oxygen module, facilitating plug-and-play installation.

[0071] As Figure 2 shown, the pure oxygen module shell 21: structure and shape are the same as the general oxygen module shell 11, ensuring compatibility and space optimization.

[0072] As Figures 5-6 shown, the pure oxygen gas separation assembly 22: built-in carbon molecular sieve for secondary purification of oxygen, output 99.5% pure oxygen.

[0073] Pure oxygen integrated valve assembly 23: integrated secondary purification gas path, etc.

[0074] Pure oxygen control gas path 24: for conveying control pure oxygen integrated valve assembly and pneumatic valve control gas.

[0075] Pure oxygen main machine pipeline 25: in the pure oxygen module shell 21, the pipeline and control gas path required for connecting the pure oxygen gas separation assembly 22, the pure oxygen integrated valve assembly 23, and the standardized input / output interface (such as air inlet, oxygen outlet) provided on the pure oxygen module shell 21. These pipelines are prefabricated in the factory, tested, and sealed to ensure reliability. Design matching general oxygen module, facilitate the flow of air when connected in series.

[0076] Pure oxygen module gas outlet connector 27: for connecting oxygen tank 6.

[0077] The present application adopts parallel expansion mechanism: a plurality of general oxygen modules or general oxygen modules and pure oxygen modules are connected in parallel through standardized interface, and the total capacity covers 15-80Nm 3 / h.

[0078] The oxygen generating system of the present application can also include other components required by the oxygen generating system, such as air-water separator, filter, instrument gas tank, various instruments, pneumatic valve, solenoid valve, etc., which can be connected according to the conventional connection method in the field.

[0079] The specific structure of the general oxygen module and the pure oxygen module and the connection of each solenoid valve, control valve and pipeline described above have been disclosed in Chinese patent CN 119633547 A An oxygen generating system and a method for rapidly increasing oxygen concentration, wherein the first oxygen generating module is the same as the general oxygen module of the present application, and the second oxygen generating module is the same as the pure oxygen module of the present application. The specific structure of the oxygen generating module disclosed in this patent is introduced into the present application.

[0080] Example 2

[0081] As Figure 9 shown, a host modular oxygen generating system, the oxygen generating system comprises air compressor 3, cold dryer 4, air tank 5, three general oxygen modules 1 and quick connection interface;

[0082] The air outlet of the air compressor 3 is connected to the air inlet of the cold dryer 4, and the air outlet of the cold dryer 4 is connected to the air inlet of the air tank 5.

[0083] The quick connection interface includes an air inlet connector 17 and an oxygen outlet connector 18 arranged on the oxygen module 1; the air inlet connector includes a pipeline connected to the oxygen module shell and a corresponding connector, and a corresponding hole can be formed on the oxygen module shell for extending the air inlet connector out of the oxygen module shell.

[0084] The air outlet of the air tank 5 is connected in parallel to the air inlets of the three oxygen modules 1 through the air inlet connector 17.

[0085] The oxygen outlets of the three oxygen modules 1 are connected to the air inlet of the oxygen tank 6 through the oxygen outlet connector 18. The oxygen outlet connector includes a pipeline connected to the oxygen module shell and a corresponding connector, and a corresponding hole can be formed on the oxygen module shell for extending the oxygen outlet connector out of the oxygen module shell.

[0086] The oxygen module in this embodiment adopts the oxygen module described in Embodiment 1. This embodiment also includes valves and pressure and flow measuring instruments required by the oxygen generating system, and the arrangement and connection of these components are conventional techniques in the field.

[0087] Embodiment 3

[0088] As shown in Figure 10 , a host modular oxygen generating system includes an air compressor 3, a cold dryer 4, an air tank 5, an oxygen module 1, a pure oxygen module 2, and a quick connection interface.

[0089] The air outlet of the air compressor 3 is connected to the air inlet of the cold dryer 4, and the air outlet of the cold dryer 4 is connected to the air inlet of the air tank 5.

[0090] The quick connection interface includes an air inlet connector 17 and an oxygen outlet connector 18 arranged on the oxygen module (which need to be removed when connected to the pure oxygen module) and a pure oxygen module outlet connector 27 and a pure oxygen module inlet connector 28 arranged on the pure oxygen module 2; the oxygen outlet connector 18 is removed, and the remaining oxygen outlet and the pure oxygen module inlet connector 28 are connected through a pure oxygen connection pipeline 26.

[0091] The air intake joint includes a pipe connected to the universal oxygen module shell and a corresponding connector. A corresponding hole can be opened on the universal oxygen module shell for extending the air intake joint out of the universal oxygen module shell. The pure oxygen module intake joint includes a pipe connected to the pure oxygen module shell and a corresponding connector. A corresponding hole can be opened on the pure oxygen module shell for extending the air intake joint out of the pure oxygen module shell. The pure oxygen module outlet joint includes a pipe connected to the pure oxygen module shell and a corresponding connector. A corresponding hole can be opened on the pure oxygen module shell for extending the pure oxygen module outlet joint out of the pure oxygen module shell.

[0092] The air outlet of the air tank 4 is connected to the air inlet of the universal oxygen module 1 through the air intake joint 17. The pure oxygen outlet of the pure oxygen module 2 is connected to the air inlet of the oxygen tank 6 through the pure oxygen module outlet joint 27.

[0093] One universal oxygen module 1 and one pure oxygen module 2 form an oxygen production main module. The pure oxygen outlet of the universal oxygen module 1 is connected to the pure oxygen module intake joint 28 of the pure oxygen module 2 through the pure oxygen and pure oxygen connection pipeline 26.

[0094] A booster 8 is arranged between the pure oxygen outlet of the pure oxygen module 2 and the air inlet of the oxygen tank 6.

[0095] A circulating compressor 7 is arranged in the pure oxygen module 2 for re-pressurizing the intermediate process gas and returning it to the pure oxygen module for purification.

[0096] The universal oxygen module and the pure oxygen module in the embodiment adopt the universal oxygen module and the pure oxygen module described in Embodiment 1. The embodiment also includes valves and pressure and flow measuring instruments required by the oxygen production system. The arrangement and connection of these components are conventional techniques in the field.

[0097] Embodiment 4

[0098] As shown in Figure 11 A main module oxygen production system includes an air compressor 3, a cold dryer 4, an air tank 5, two universal oxygen modules 1, two pure oxygen modules 2, and a quick connection interface.

[0099] The air outlet of the air compressor 3 is connected to the air inlet of the cold dryer 4. The air outlet of the cold dryer 4 is connected to the air inlet of the air tank 5.

[0100] The quick connection interface comprises an air inlet joint 17 and an air outlet joint 18 (which need to be removed when connected with the pure oxygen module) arranged on the oxygen-enriched air module, and a pure oxygen module outlet joint 27 and a pure oxygen module inlet joint 28 arranged on the pure oxygen module 2; the oxygen-enriched air outlet port remaining after the oxygen-enriched air outlet joint 18 is removed and the pure oxygen module inlet joint 28 are connected through an oxygen-enriched air-pure oxygen connecting pipeline 26.

[0101] The air inlet joint comprises a pipeline connected to the oxygen-enriched air module shell and a corresponding joint, and a corresponding hole can be formed on the oxygen-enriched air module shell for extending the air inlet joint out of the oxygen-enriched air module shell. The oxygen-enriched air outlet joint comprises a pipeline connected to the oxygen-enriched air module shell and a corresponding joint, and a corresponding hole can be formed on the oxygen-enriched air module shell for extending the oxygen-enriched air outlet joint out of the oxygen-enriched air module shell. The pure oxygen module inlet joint comprises a pipeline connected to the pure oxygen module shell and a corresponding joint, and a corresponding hole can be formed on the pure oxygen module shell for extending the air inlet joint out of the pure oxygen module shell. The pure oxygen module outlet joint comprises a pipeline connected to the pure oxygen module shell and a corresponding joint, and a corresponding hole can be formed on the pure oxygen module shell for extending the pure oxygen module outlet joint out of the pure oxygen module shell.

[0102] The air outlet of the air tank is connected to the air inlet of the oxygen-enriched air module 1 through the air inlet joint 17; the pure oxygen outlet of the pure oxygen module is connected to the air inlet of the oxygen tank 6 through the pure oxygen module outlet joint 27.

[0103] One oxygen-enriched air module and one pure oxygen module form one oxygen production main module, and the oxygen-enriched air outlet of the oxygen-enriched air module 1 is connected to the oxygen-enriched air inlet of the pure oxygen module 2 through the oxygen-enriched air outlet joint 18 and the oxygen-enriched air-pure oxygen connecting pipeline 26.

[0104] A booster 8 is arranged between the pure oxygen outlet of the pure oxygen module 2 and the air inlet of the oxygen tank 6.

[0105] A circulating compressor 7 is arranged in the pure oxygen module 2 for re-pressurizing the intermediate process gas and returning it to the pure oxygen module for purification.

[0106] The oxygen-enriched air module and the pure oxygen module in the embodiment are the oxygen-enriched air module and the pure oxygen module described in Embodiment 1. The embodiment further comprises valves and pressure and flow measuring instruments required by the oxygen production system, and the arrangement and connection of these components are conventional techniques in the field.

[0107] The contents not described in detail in the present application can adopt conventional technical knowledge in the field.

[0108] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application but not to limit. Although the present application is described in detail with reference to the embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A modular host oxygen generation system, comprising: The oxygen production system comprises an air compressor, a cold dryer, an air tank, m ordinary oxygen modules, n pure oxygen modules and a quick connection interface; The air outlet of the air compressor is connected to the air inlet of the cold dryer, and the air outlet of the cold dryer is connected to the air inlet of the air tank; The quick connection interface comprises an air inlet joint and an ordinary oxygen outlet joint arranged on the ordinary oxygen module, and a pure oxygen module inlet joint and a pure oxygen module outlet joint arranged on the pure oxygen module; The air outlet of the air tank is connected to the air inlets of the m ordinary oxygen modules through the air inlet joint, and the pure oxygen outlets of the n pure oxygen modules are connected to the air inlets of the oxygen tank through the pure oxygen module outlet joint; In the m ordinary oxygen modules and the n pure oxygen modules, the ordinary oxygen outlet of the ordinary oxygen module is connected to the pure oxygen module inlet joint of the pure oxygen module through an ordinary oxygen-pure oxygen connection pipeline.

2. The host modular oxygen generation system of claim 1, wherein, The ordinary oxygen module comprises an ordinary oxygen module shell, an ordinary oxygen gas separation assembly, an ordinary oxygen integrated valve assembly, an ordinary oxygen control gas path, an ordinary oxygen main machine pipeline and an electric box controller; The ordinary oxygen gas separation assembly, the ordinary oxygen integrated valve assembly, the ordinary oxygen control gas path, the ordinary oxygen main machine pipeline and the electric box controller are arranged in the ordinary oxygen module shell; The ordinary oxygen gas separation assembly is used for separating oxygen from air; The ordinary oxygen integrated valve assembly integrates the air inlet valve, the pressure equalizing valve, the oxygen production / cleaning valve and the exhaust valve required by the ordinary oxygen gas separation assembly, and is connected to the ordinary oxygen gas separation assembly through a pipeline; The ordinary oxygen main machine pipeline comprises the ordinary oxygen gas separation assembly, the ordinary oxygen integrated valve assembly and the quick connection interface arranged on the ordinary oxygen module shell; The ordinary oxygen control gas path comprises a control gas used for conveying and controlling the ordinary oxygen integrated valve assembly; The electric box controller is used for running monitoring, fault alarm and man-machine interaction of the whole oxygen production system.

3. The host modular oxygen generation system of claim 1, wherein, The pure oxygen module comprises a pure oxygen module shell, a pure oxygen gas separation assembly, a pure oxygen integrated valve assembly, a pure oxygen control gas path and a pure oxygen main machine pipeline; The pure oxygen gas separation assembly, the pure oxygen integrated valve assembly, the pure oxygen control gas path and the pure oxygen main machine pipeline are arranged in the pure oxygen module shell; The pure oxygen gas separation assembly is used for secondary purification of oxygen to produce 99.5% pure oxygen; The pure oxygen integrated valve assembly integrates the secondary purification gas path and the pure oxygen control gas path; The pure oxygen main machine pipeline comprises the pure oxygen gas separation assembly, the pure oxygen integrated valve assembly and the quick connection interface arranged on the pure oxygen module shell.

4. The host modular oxygen generation system of claim 1, wherein, A booster is arranged between the pure oxygen outlets of the n pure oxygen modules and the air inlets of the oxygen tank.

5. The host modular oxygen generation system of claim 1, wherein, A circulating compressor is arranged in the pure oxygen module, which is used for re-pressurizing the intermediate process gas and returning it to the pure oxygen module for purification.

6. The host modular oxygen generation system of claim 1, wherein, The shells of the ordinary oxygen module and the pure oxygen module are of the same shape and size.

7. The host modular oxygen generation system of claim 1, wherein, n in the n pure oxygen modules is zero.

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