CN112408331A

CN112408331A - Three-tower PSA oxygenerator

Info

Publication number: CN112408331A
Application number: CN202011275487.6A
Authority: CN
Inventors: 杨朝; 韩国明; 王希华
Original assignee: Shandong Still Medical Technology Co ltd
Current assignee: Shandong Still Medical Technology Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-02-26
Anticipated expiration: 2040-11-16
Also published as: CN112408331B

Abstract

The utility model provides a three tower PSA oxygenerator, includes casing and middle division board, three adsorption towers have been arranged at the back to the baffle, the baffle top is equipped with the multiple circuit connector, be provided with three independent balanced pipelines and an oxygen output pipeline in the multiple circuit connector, three independent balanced pipelines except being connected with the gas outlet of three adsorption towers, the side still distributes and has one or more interface, the interface of three balanced pipeline sides is connected to a tribit five-way solenoid valve through air hose on, three balanced pipeline outsides pass through air hose and oxygen output pipeline connection, oxygen output pipeline outlet end is connected with the oxygen output pipeline, oxygen output pipeline has intelligent pressure regulating pipeline through three-way joint parallel connection, intelligent pressure regulating pipeline maximum flow is less than the maximum flow of oxygen output pipeline. The oxygen generator greatly simplifies the structure of the oxygen generator, the front panel is neat, the design of the intelligent pressure regulating pipeline can ensure the oxygen output concentration of the oxygen generator when the oxygen tank is started to oxygenate.

Description

Three-tower PSA oxygenerator

Technical Field

The invention relates to the technical field of oxygen generators, in particular to a compact three-tower PSA oxygen generator.

Background

Pressure swing adsorption oxygen generating equipment (also called PSA oxygen generating equipment) selectively adsorbs impurities such as nitrogen, carbon dioxide, water and the like in air by utilizing a PSA special molecular sieve under the conditions of normal temperature and normal pressure, thereby obtaining oxygen with higher purity (93% +/-2). When two or more towers are adopted to generate oxygen, each adsorption tower is in different working states, two towers are taken as an example, when one tower is in a desorption state, the other tower is in a pressurization oxygen generation state, at the moment, the adsorption tower in the desorption state can be swept by oxygen discharged by the adsorption tower in the pressurization oxygen generation state, high-pressure oxygen enters, and the desorption of nitrogen can be greatly accelerated only within a few seconds. At present, the conventional method adopts an electromagnetic balance valve to realize mutual air supplement between two adsorption towers. The position of this kind of electromagnetism balanced valve generally links to each other with the oxygen outlet of adsorption tower, when using on two tower machines, only need one can, however when using on three towers and above oxygenerator, just need arrange a plurality ofly, all need arrange one between per two adsorption towers, lead to the pipeline in the oxygenerator and complicated. Therefore, how to ensure the tidiness of the front panel, and simultaneously, on the basis of ensuring the oxygen generation capacity of the three or more oxygen generators, the structure of the oxygen generator is simplified as much as possible, so that the front panel is a major problem faced by the current oxygen generator equipment.

In addition, the opening of the oxygen output pipeline of the traditional oxygen generator is generally controlled by a ball valve, when a power failure accident occurs in a hospital, the oxygen pressure in the oxygen tank can be reduced to zero, and after the power is supplied to the hospital, oxygen needs to be input into the oxygen tank again, so that the oxygen pressure in the oxygen tank returns to more than 90%, and the oxygen demand of a patient is met. However, the oxygen output flow is limited by manually controlling the opening of the ball valve, the difficulty is undoubtedly great, the requirement on the proficiency of an operator is high, the operator is required to stare at the site all the time, the adjustment is carried out at any time, and time and labor are consumed.

Disclosure of Invention

In order to solve the problems, the invention provides a three-tower PSA oxygenerator, which uses a multipath connector to replace an oxygen collecting pipe and a balance valve of the traditional oxygenerator, greatly simplifies the structure of the oxygenerator, has a neat front panel, and can ensure the oxygen output concentration of the oxygenerator when an oxygen tank is started to oxygenate through an intelligent pressure regulating pipeline connected in parallel on an oxygen output pipeline.

The technical scheme of the invention is as follows:

the utility model provides a three tower PSA oxygenerator, includes the casing, establish intermediate bottom in the casing, three adsorption towers have been arranged behind the baffle, and three adsorption towers pass through U type mount and fix behind the baffle side by side. The upper end and the lower end of the partition board are respectively provided with an upper connector and a lower connector, the upper connector and the lower connector are respectively exposed out of air inlet and outlet ports of the three adsorption towers, the partition board at the lower part of the upper connector is provided with a multi-way connector, the multi-way connector is provided with a three-position five-way electromagnetic valve, and mutual air supplement among the three adsorption towers is realized by the synergistic effect of the multi-way connector and the three-position five-way electromagnetic valve instead of an oxygen collecting pipe and a balance valve of a traditional oxygenerator.

Furthermore, the multipath connector comprises a rectangular structure and is convenient to manufacture, three independent balance pipelines and an oxygen outlet pipeline are arranged in the multipath connector, the three independent balance pipelines are connected with the air outlets of the three adsorption towers, one or more interfaces are distributed on the side surfaces of the three independent balance pipelines, the interfaces on the side surfaces of the three balance pipelines are connected to the three-position five-way electromagnetic valve through air hoses, the three balance pipelines are connected with the oxygen outlet pipeline through the air hoses, oxygen prepared by the adsorption towers normally flows out of the oxygen outlet pipeline, and meanwhile, under the control of the three-position five-way electromagnetic valve, the balance between every two balance pipelines is required. The oxygen outlet end of the oxygen outlet pipeline is connected with an oxygen outlet pipeline, the oxygen outlet pipeline is connected with an intelligent pressure regulating pipeline in parallel through a tee joint, and the maximum flow of the intelligent pressure regulating pipeline is smaller than that of the oxygen outlet pipeline.

According to the three-tower PSA oxygenerator, the three balance pipelines in the multipath connector comprise a main pipeline and a plurality of branch pipelines which are parallel to each other, the outlets of all the pipelines are exposed out of the multipath connector, one end of the main pipeline is connected with the oxygen outlet of the adsorption tower, the other end of the main pipeline is provided with an oxygen pressure detection port, and the oxygen pressure detection port is provided with an oxygen pressure sensor. Preferably, the balance pipeline in the middle of the three balance pipelines is higher or lower than the balance pipelines on the two sides, so that the three balance pipelines are arranged conveniently and are not crossed with each other.

Furthermore, a valve frame is assembled on the upper surface of the multi-way connector, the three-position five-way electromagnetic valve is assembled on the upper surface of the valve frame, the air hose connected with the three balance pipelines and the oxygen outlet pipeline is also connected with a one-way valve, and the air hose and the one-way valve penetrate through the lower surface of the valve frame.

According to the three-tower PSA oxygenerator, the oxygen outlet pipeline comprises the three-way joint, the ball valve and the oxygen sampling pressure reducing valve, the three-way joint is connected with the oxygen outlet pipeline of the multi-way connector, and the ball valve and the oxygen sampling pressure reducing valve are sequentially connected behind the three-way joint.

Further, intelligence pressure regulating pipeline includes first hose, second hose and choke valve, first hose passes through elbow bend and links to each other with three way connection, be connected with the choke valve between first hose and the second hose, first hose has the micropore with the inside stopper of choke valve link, be equipped with one or more through-holes along oxygen flow direction in the micropore, the second hose is connected with the oxygen pipeline of going out.

Furthermore, the size of the through hole in the micropore is 1.4-2 mm. By controlling the size of the micropores, the concentration of oxygen flowing out through the intelligent pressure regulating pipeline can be ensured to be more than 90%. When the oxygen tank is started to oxygenate, the ball valve switch can be directly closed to allow oxygen to flow out of the micropores, so that the operation is simple and can be carried out by anyone.

According to the three-tower PSA oxygenerator, the multipath connector and the lower part of the oxygen outlet pipeline are provided with the air inlet pipeline and the pressure reducing valve, the air inlet pipeline comprises the wall-penetrating joint, the ball valve, the propelling joint component and the third hose, the wall-penetrating joint is fixed on the oxygenerator shell, the ball valve is connected behind the wall-penetrating joint, the propelling joint component is respectively connected to the front end and the rear end of the hose, the propelling joint component at the front end of the hose is connected with the ball valve, and the propelling joint component at the rear end of the hose is connected with the pressure reducing valve through the right-. The mode of combining the hose and the pushing joint assembly is adopted, rigid connection is replaced by flexible connection, air can be conveniently led into the pressure reducing valve to be used, and meanwhile, the position setting of the pressure reducing valve is more flexible.

Furthermore, the propulsion connector assembly comprises a connector body, a locking nut and a connector, one end of the connector is locked with one end of the connector body through the locking nut and is in a sealed state, and the other end of the connector is connected with the hose.

In the three-tower PSA oxygenerator, the multipath connector and the pressure reducing valve are positioned on the central axis of the clapboard. The multi-way connector is convenient to be connected with the oxygen outlet pipelines of the three adsorption towers and connected with the air inlet pipelines of the pressure reducing valve and the three adsorption towers.

Compared with the prior art, the invention has the advantages that:

1. the three-tower PSA oxygenerator uses the multipath connector to replace an oxygen collecting pipe and a balance valve of the traditional oxygenerator, greatly simplifies the structure of the oxygenerator, and has a neat front panel.

2. According to the three-tower PSA oxygen generator, the intelligent pressure regulating pipeline is connected in parallel with the oxygen output pipeline, and the size of the micropores in the first hose is controlled, so that the concentration of oxygen flowing out through the intelligent pressure regulating pipeline can be ensured to be more than 90%. When the oxygen tank is started to oxygenate, the ball valve switch can be directly closed to allow oxygen to flow out of the micropores, so that the operation is simple and can be carried out by anyone.

3. According to the three-tower PSA oxygenerator, the air inlet pipeline adopts a mode of combining the hose and the propelling joint assembly, and the rigid connection is replaced by the flexible connection, so that air can be conveniently introduced into the pressure reducing valve for use, and the three-tower PSA oxygenerator is convenient to install.

Drawings

The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.

In the drawings:

fig. 1 is a schematic front structural view of a three-tower PSA oxygen generator in example 1;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a schematic diagram of a multi-way connector;

FIG. 4 is a schematic diagram of the connection of the multi-way connector to the three-position five-way solenoid valve;

FIG. 5 is a perspective view of the multi-way connector;

FIG. 6 is an internal perspective view of the multi-way connector;

FIG. 7 is a side view of FIG. 5;

FIG. 8 is a top view of FIG. 5;

FIG. 9 is a schematic view of the valve cage;

FIG. 10 is an assembly view of the oxygen outlet line and the intelligent pressure regulating line;

FIG. 11 is an enlarged view of a portion of the locations of the micro-holes of FIG. 10;

FIG. 12 is a schematic view of an air intake circuit configuration;

FIG. 13 is a schematic view of the pusher sub assembly in an assembled state;

FIG. 14 is a schematic view of the impulse joint assembly in an exploded condition;

the components represented by the reference numerals in the figures are:

1. a shell, 101, a threading groove, 102, an oxygen outlet, 2, a clapboard, 201, an upper connecting port, 202, a lower connecting port, 3, an adsorption tower, 4, a multi-way connector, 401, a tower balance pipeline, 402, a tower balance pipeline, 403, a tower balance pipeline, 404, an oxygen outlet pipeline, 405, a tower first interface, 406, a tower second interface, 407, a tower third interface, 408, an oxygen pressure detection port, 409, a tower fourth interface, 410, a tower first interface, 411, a tower second interface, 412, a tower third interface, 413, a tower fourth interface, 414, a tower first interface, 415, a tower second interface, 416, a tower third interface, 417, a tower fourth interface, 418, an installation hole, 419, a tee T-joint quick-connection joint, 420 plug, 421, a one-way valve, 5, a valve frame, 6, a three-position five-way solenoid valve, 7, an air pipeline, 701, a tee joint, 702. ball valve, 703, four way connection, 704, oxygen sampling relief valve, 705, coupling, 8, intelligent pressure regulating pipeline, 801, first elbow bend, 802, first hose, 803, second hose, 804, choke valve, 805, micropore, 9, air intake about 901, through-the-wall joint, 902, propulsion joint subassembly, 903, joint body, 904, lock nut, 905, connector, 906, third hose, 907, second elbow bend, 10, relief valve, 11, solenoid valve subassembly, 12, threading groove, 13, oxygen analyzer.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.

Example 1

Referring to fig. 1 and 2, fig. 1 and 2 are schematic structural diagrams of a three-tower PSA oxygenerator of embodiment 1, including a housing 1, a middle partition 2 is arranged in the housing 1, three adsorption towers 3 are arranged behind the partition 2, the three adsorption towers 3 are fixed behind the partition 2 side by a U-shaped fixing frame, and tower a, tower B and tower C are arranged from left to right in sequence. The upper end and the lower end of the partition board 2 are respectively provided with an upper connecting port 201 and a lower connecting port 202, the upper connecting port 201 and the lower connecting port 202 are respectively exposed out of air inlet and outlet ports of the three adsorption towers 3, the middle position of the partition board 2 at the lower part of the upper connecting port 201 is provided with a multi-way connector 4, the multi-way connector 4 is provided with a three-position five-way electromagnetic valve 6, and the mutual air supplement among the three adsorption towers 3 can be realized by the synergistic action of the multi-way connector 4 and the three-position five-way electromagnetic valve 6 instead of an oxygen collecting pipe and a balance valve.

Referring to fig. 3 and 4, the multi-way connector 4 has a rectangular structure, which is convenient to manufacture, and has three independent balance pipes and an oxygen outlet pipe, wherein the three balance pipes include a main pipe and a plurality of branch pipes, which are parallel to each other, and all the outlets of the pipes are exposed outside the multi-way connector 4. Specifically, three balanced pipelines are tower A balanced pipeline 401, tower B balanced pipeline 402 and tower C balanced pipeline 403 respectively from left to right, are equipped with four openings on every balanced pipeline, and the top opening all faces the top, is convenient for be connected with the oxygen outlet of three adsorption tower 3. The openings at the lowest end are oxygen pressure detection openings 408 which are used for connecting oxygen pressure sensors.

Referring to fig. 5 and fig. 6, the column a balance pipeline 401 is respectively provided with a column a first interface 405, a column a second interface 406 and a column a third interface 407 from top to bottom, the column B balance pipeline 402 is respectively provided with a column B first interface 410, a column B second interface 411 and a column B third interface 412 from top to bottom, the column C balance pipeline 403 is respectively provided with a column C first interface 414, a column C second interface 415 and a column C third interface 416 from top to bottom, except that the column a first interface 405, the column B first interface 410 and the column C first interface 414 face to the upper part of the multi-way connector 4, the other interfaces face to both sides of the multi-way connector 4, so as to connect the three-position five-way electromagnetic valve 6, the air pressure balance between two adsorption columns 3 is realized by controlling different working positions of the three-position five-way electromagnetic valve 6, the adsorption column 3 in the state of pressure oxygen generation is used to purge the adsorption column 3 in the state of desorption, thereby greatly accelerating the desorption of the nitrogen.

Referring now to fig. 7 and 8, the B-tower balance duct 402 is higher than the two-side balance duct in this embodiment, so as to avoid the branch duct extending from the B-tower balance duct 402 to both sides from crossing the a-tower balance duct 401 and the C-tower balance duct 403.

Referring to fig. 6, the multi-way connector 4 is provided with a transversely arranged oxygen outlet pipe 404 at the lower end of the oxygen pressure detection port 408, and the three balance pipes and the oxygen outlet pipe 404 are not crossed with each other. The oxygen outlet pipe 404 penetrates the lower part of the multi-way connector 4, one end of each of two end parts is sealed by a plug 9, and the other end of each of the two end parts is connected with the oxygen outlet pipe 7. Three oxygen output interfaces are distributed on the oxygen outlet pipeline 404, the opening positions face the front face of the multi-way connector 4, a tower A fourth interface 409, a tower B fourth interface 413 and a tower C fourth interface 417 are respectively arranged from left to right, and oxygen generated by the three molecular sieve towers 13 can be respectively introduced into the oxygen outlet pipeline 10.

Referring to fig. 3 and 4, a tee T-shaped quick coupling 419 is connected to each of the first a-column interface 405, the first B-column interface 410, and the first C-column interface 414, one end of the tee T-shaped quick coupling 419 is connected to the multi-path connector 4, the second coupling is connected to the oxygen outlet of the adsorption column 3, the third coupling is connected to the oxygen output interface of the oxygen output pipe 404, and a check valve 421 is further connected between the tee T-shaped quick coupling 419 and the oxygen output interface.

Referring now to fig. 4 and 9, the multi-way connector 4 is assembled with a valve frame 5 on the front, the valve frame 5 is provided with a convex space at the middle position, and the one-way valve 421 can pass through the valve frame 5. Preferably, the length of the valve frame 5 does not exceed the position of the oxygen pressure detection port 408, so that the oxygen pressure sensor can be conveniently installed by a worker.

In this embodiment, the three-position five-way electromagnetic valve 6 is connected to the tower a second port 406, the tower B second port 411, the tower C second port 415, and the tower C third port 416, and the tower a third port 407 and the tower B third port 412 are closed by plugs 9. When the valve core of the three-position five-way electromagnetic valve 6 is in the middle position, the tower A oxygen outlet 4 and the tower B oxygen outlet 5 are communicated and balanced, when the valve core of the three-position five-way electromagnetic valve 6 is in the upper position, the tower A oxygen outlet 4 and the tower C oxygen outlet 6 are communicated and balanced, and when the valve core of the three-position five-way electromagnetic valve 6 is in the lower position, the tower B oxygen outlet 5 and the tower C oxygen outlet 6 are communicated and balanced.

Of course, the plug 9 may be omitted, and the tower a third port 407 and the tower B third port 412 are opened. Three separate balancing valves may thus be used instead of the three-position, five-way solenoid valve 6.

Further, mounting holes 418 are formed in the periphery of the multipath connector 4, the positions of the balance pipeline and the oxygen outlet pipeline 404 are avoided by the mounting holes 418, and the multipath connector 4 and the valve frame 5 can be fixed on the oxygen generator partition plate 2 through fixing pieces such as bolts.

Referring to fig. 10, an outlet end of the oxygen outlet pipe 404 is connected with an oxygen outlet pipeline 7, the oxygen outlet pipeline 7 is connected in parallel with an intelligent pressure regulating pipeline 8 through a three-way joint 701, and the maximum flow of the intelligent pressure regulating pipeline 8 is smaller than the maximum flow of the oxygen outlet pipeline 7.

Further, the oxygen outlet pipe 7 is provided with a ball valve 702, a four-way joint 703 and an oxygen sampling pressure reducing valve 704 in sequence from the three-way joint 701 to the back. The front end and the rear end of the intelligent pressure regulating pipeline 8 are respectively connected with a three-way joint 701 and a four-way joint 703. The lower end of the four-way joint 703 is connected with an oxygen sampling pressure reducing valve 704, the left end is an oxygen output port, and the port is connected with the oxygen outlet 102 at the upper part of the shell 1.

Further, intelligent pressure regulating pipeline 8 includes first hose 802, second hose 803 and choke valve 804, first hose 802 links to each other with three way connection 701 through first quarter bend 801, be connected with choke valve 804 between first hose 802 and the second hose 803, first hose 802 and the inside micropore 805 that is plugged into of choke valve 804 link, second hose 803 is connected with four way connection 703.

Referring to fig. 11, the outer dimension of the micro-hole 805 is matched with the inner diameter of the first hose 802, the material of the micro-hole 10 is non-toxic polytetrafluoroethylene, and a through hole is formed in the center of the micro-hole for facilitating oxygen transmission. Preferably, the size of the through hole in the micro hole 805 is between 1.4 and 2 mm. The size of the through holes in the micropores 805 is continuously increased along with the increase of the oxygen production amount. At the same time, the throttle valve 804 in connection with the micro-holes 805 also allows fine tuning of the oxygen concentration flowing through it.

By controlling the size of the micropores 805, the concentration of the oxygen flowing out through the intelligent pressure regulating pipeline 8 can be ensured to be more than 90%. When the oxygen tank is started to oxygenate, the switch of the ball valve 702 can be directly closed, so that oxygen flows out of the micropores 805, the operation is simple, and any person can operate the oxygen tank.

Referring to fig. 12, the air inlet pipe 9 of the present embodiment is mounted at the middle lower portion of the partition plate 2, and adopts a flexible connection manner to replace the conventional hard pipe connection, so as to facilitate the introduction of air into the pressure reducing valve 10 for use, and at the same time, to make the position setting of the pressure reducing valve 10 more flexible.

Further, the air inlet pipeline 9 comprises a wall-penetrating joint 901, a ball valve 702, a thrust joint assembly 902 and a third hose 906, the wall-penetrating joint 901 is fixed on the casing 1 of the oxygen generator and is communicated with the air inlet 101 on the outer wall of the casing 1, the ball valve 702 is connected behind the wall-penetrating joint 901, the front end and the rear end of the third hose 906 are respectively connected with a set of thrust joint assemblies 902, the thrust joint assembly 902 at the front end of the third hose 906 is connected with the ball valve 702, and the thrust joint assembly 902 at the rear end of the third hose 906 is connected with the pressure reducing valve 10 through a second right-angle elbow 907.

Referring to fig. 13 and 14, the push fitting assembly 902 includes a fitting body 903, a lock nut 904, and a connecting body 905, one end of the connecting body 905 is locked to one end of the fitting body 903 by the lock nut 904 and is in a sealed state, and the other end of the connecting body 905 is connected to a hose.

Further, a spherical seal is formed between the joint body 903 and the connecting body 905. The end that connects body 903 and connector 905 links to each other is equipped with interior taper hole, the end that connects connector 905 and connector 903 links to each other is equipped with the sealed bulb of evagination. The sealing ball of the connector 905 is tightly pressed together with the inner tapered bore of the connector body 903 to form a spherical seal.

In this embodiment, the multiplex connector 4 and the pressure reducing valve 10 are both located on the central axis of the partition plate 2. It is convenient for the multi-way connector 4 to be connected with the oxygen outlet pipelines of the three adsorption towers 3 and for the pressure reducing valve 10 to be connected with the air inlet pipelines of the three adsorption towers 3. The 2 right sides of baffle are provided with threading groove 12, and threading groove 12 tops are equipped with oxygen analysis appearance 13, and threading groove 12 intermediate position is equipped with 11 subassemblies of solenoid valve, the line connection of being convenient for. Meanwhile, the exposed lines of the oxygen generator partition plate 2 are minimized, and the arrangement of all the parts on the partition plate 2 is greatly improved compared with the traditional oxygen generator.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or additions or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A three-tower PSA oxygenerator comprises a shell (1), wherein a middle partition plate (2) is arranged in the shell (1), three adsorption towers (3) are arranged behind the partition plate (2), and the three-tower PSA oxygenerator is characterized in that the upper end and the lower end of the partition plate (2) are respectively provided with an upper connector (201) and a lower connector (202), the upper connector (201) and the lower connector (202) respectively expose air inlets and air outlets of the three adsorption towers (3), a multi-way connector (4) is assembled on the partition plate (2) at the lower part of the upper connector (201), three independent balance pipelines and an oxygen outlet pipeline (404) are arranged in the multi-way connector (4), the three independent balance pipelines are connected with the air outlets of the three adsorption towers (3), one or more interfaces are distributed on the side surfaces, and the interfaces on the side surfaces of the three balance pipelines are connected to a three-position five-way electromagnetic valve (, three balanced pipeline outsides are connected with oxygen pipeline (404) through air hose, oxygen pipeline (404) exit end is connected with oxygen pipeline (7), oxygen pipeline (7) have intelligent pressure regulating pipeline (8) through three way connection (701) parallel, intelligent pressure regulating pipeline (8) maximum flow is less than the maximum flow of oxygen pipeline.

2. The three-tower PSA oxygenerator according to claim 1, wherein three balance pipes in the multi-path connector (4) comprise a main pipe and a plurality of branch pipes which are parallel to each other, all the pipes are exposed outside the multi-path connector (4), one end of the main pipe is connected with the oxygen outlet of the adsorption tower (3), the other end of the main pipe is provided with an oxygen pressure detection port, and the oxygen pressure detection port is provided with an oxygen pressure sensor.

3. The three-tower PSA oxygenerator according to claim 1 or 2, characterized in that the valve frame (5) is assembled on the upper surface of the multi-way connector (4), the three-position five-way solenoid valve (6) is assembled on the upper surface of the valve frame (5), the air hose connecting the three balance pipes and the oxygen outlet pipe (404) is also connected with a one-way valve (421), and the air hose and the one-way valve (421) pass through the lower part of the valve frame (5).

4. A three-tower PSA oxygen generator according to any one of claims 1 to 3, wherein the equilibrium pipeline in the middle of the three equilibrium pipelines is higher or lower than the equilibrium pipelines on both sides.

5. The three-tower PSA oxygenerator according to claim 1, characterized in that, the oxygen outlet line (7) comprises a three-way joint (701), a ball valve (702) and an oxygen sampling pressure reducing valve (704), the three-way joint (701) is connected with the oxygen outlet pipe (404) of the multi-way connector (4), and then the ball valve (702) and the oxygen sampling pressure reducing valve (704) are connected in sequence.

6. The three-tower PSA oxygenerator according to claim 5, characterized in that intelligent pressure regulating pipeline (8) includes first hose (802), second hose (803) and choke valve (804), first hose (802) passes through the elbow bend and links to each other with three way connection (701), be connected with choke valve (804) between first hose (802) and second hose (803), micropore (805) have been filled up to first hose (802) and choke valve (804) link inside, be equipped with one or more through-holes along the oxygen flow direction in micropore (805), second hose (803) is connected with oxygen outlet pipe (7).

7. The three-tower PSA oxygenerator according to claim 6, wherein the size of the through holes in the micropores (10) is between 1.4 and 2 mm.

8. The three-tower PSA oxygenerator according to claim 1, characterized in that an air inlet pipe (9) and a pressure reducing valve (10) are assembled at the lower part of the multi-way connector (4) and the oxygen outlet pipe (7), the air inlet pipe (9) comprises a wall-through joint (901), a ball valve (702), a thrust joint assembly (902) and a third hose (906), the wall-through joint (901) is fixed on the oxygenerator housing (1), the ball valve (702) is connected at the rear part of the wall-through joint, the thrust joint assembly (902) is respectively connected at the front end and the rear end of the third hose (906), the thrust joint assembly (902) at the front end of the third hose (906) is connected with the ball valve (702), and the thrust joint assembly (902) at the rear end of the third hose (906) is connected with the pressure reducing valve (10) through a right-angle.

9. The three-tower PSA oxygenerator according to claim 8, wherein the push joint assembly (902) comprises a joint body (903), a locking nut (904) and a connecting body (905), one end of the connecting body (905) is locked with one end of the joint body (903) by the locking nut (904) and is in a sealed state, and the other end of the connecting body (905) is connected with a third hose (906).

10. A three tower PSA oxygenerator according to claim 8 or 9, wherein the multiplex connector (4) and the pressure reducing valve (10) are located on the central axis of the diaphragm (2).