A multi-component gas mixing device and method under high pressure

Abstract

The present application discloses a multi-component gas mixing device and method under high pressure, which relates to the field of high-pressure gas preparation technology. The multi-component gas mixing device under high pressure includes multiple high-pressure storage tanks, the high-pressure storage tanks are provided with gas supply pipelines, the gas supply pipelines are provided with gas supply control valves, the multiple gas supply pipelines are commonly connected to an intake pipe, the two ends of the intake pipe are commonly connected to a gas mixing cylinder, the two ends of the intake pipe are connected to the same end of the gas mixing cylinder; one end of the intake pipe is connected to the outer peripheral wall of the gas mixing cylinder in a tangential introduction manner, and the other end of the intake pipe is connected to the end wall of the gas mixing cylinder; the end of the gas mixing cylinder away from the intake pipe is connected to a gas transmission pipeline. The present application can improve the mixing degree of gas during instant mixing preparation.

Description

Technical Field

[0001] The present application relates to the field of high-pressure gas preparation technology, and in particular to a high-pressure multi-component gas mixing device and method. Background Art

[0002] Gas mixing devices can mix different types of gases in a certain proportion to obtain the desired mixed gas. Gas mixing devices are widely used in industrial production and scientific research, such as electronics, chemicals, medical treatment, environmental protection and other fields. Due to the low density of gas, gas usually needs to be pressurized and stored in a high-pressure storage tank to save gas storage space.

[0003] In some gas usage scenarios, gas needs to be prepared immediately before use, but gas mixing often requires a certain amount of waiting time to achieve a uniform mixing effect. If the mixed gas is stored for a second time and then reused, the stored gas needs to be pressurized again, which is inconvenient. Summary of the invention

[0004] In order to improve the mixing effect during instant gas mixing, the present application provides a multi-component gas mixing device and method under high pressure.

[0005] The present application provides a high-pressure multi-component gas mixing device and method using the following technical solutions:

[0006] A multi-component gas mixing device under high pressure comprises a plurality of high-pressure storage tanks, wherein the high-pressure storage tanks are provided with gas supply pipelines, the gas supply pipelines are provided with gas supply control valves, the plurality of gas supply pipelines are commonly connected to an air intake pipe, both ends of the air intake pipes are commonly connected to a gas mixing cylinder, both ends of the air intake pipes are connected to the same end of the gas mixing cylinder; one end of the air intake pipe is connected to the outer peripheral wall of the gas mixing cylinder in a tangential introduction manner, and the other end of the air intake pipe is connected to the end wall of the gas mixing cylinder; the end of the gas mixing cylinder away from the air intake pipe is connected to a gas delivery pipeline, and the gas delivery pipeline is provided with a gas delivery control valve.

[0007] By adopting the above technical solution, different high-pressure gases are stored in different high-pressure storage tanks of the gas mixing device. When the gas mixing device is working, the gas transmission control valve is opened, and the gas supply control valves on each gas supply pipeline are opened, so that the high-pressure gases in different high-pressure storage tanks flow into the intake pipe at the same time, and after intersecting in the intake pipe, they enter the mixing cylinder from both ends of the intake pipe at the same time. After the gas in the intake pipe enters the mixing cylinder tangentially from one end of the intake pipe, a vortex is formed along the inner wall of the mixing cylinder; the gas in the intake pipe enters from the other end of the intake pipe through the end wall of the mixing cylinder in a straight line direction. In the process of the two airflows with different flow modes intersecting with each other in the mixing cylinder, a large mutual disturbance is formed between the two airflows, so that the gas can be fully mixed when discharged from the gas transmission pipeline.

[0008] Optionally, the port connecting the air intake pipe to the end wall of the mixing cylinder is set as an axial port; a diverter inner cylinder is provided in the mixing cylinder, the diverter inner cylinder is concentrically arranged with the mixing cylinder, the diverter inner cylinder is communicated with the axial port of the air intake pipe, the end of the diverter inner cylinder away from the axial port is closed, and the outer peripheral wall of the diverter inner cylinder is provided with a plurality of diverter holes.

[0009] By adopting the above technical solution, the gas in the air intake pipe passes through the diverter inner cylinder when entering the mixing cylinder from the axial port. The gas enters the mixing cylinder from the diverter hole of the diverter inner cylinder. After the gas is diverted by the diverter cylinder, it intersects with the swirling airflow in the mixing cylinder, so that the airflow entering the mixing cylinder is further dispersed, which is conducive to further improving the mixing effect of the gas.

[0010] Optionally, the flow-dividing inner cylinder is coaxially rotatably connected to the gas mixing cylinder, a rotating driving propeller is fixedly provided on the inner side of the flow-dividing inner cylinder, and the axis of the rotating driving propeller coincides with the center line of the flow-dividing inner cylinder.

[0011] By adopting the above technical solution, the airflow pushes the rotating driving paddle when passing through the splitter inner cylinder, so that the rotating driving paddle drives the splitter inner cylinder to rotate, and the airflow enters the mixing cylinder in a rotating flow manner, which is beneficial to increase the speed difference between different airflows in the mixing cylinder, thereby helping to further improve the gas mixing effect.

[0012] Optionally, the diversion inner cylinder includes a plurality of cylinder sections which are slidably sleeved in sequence with each other, and the cross-sectional size of each cylinder section gradually decreases in the direction away from the end wall of the mixing cylinder; the diversion holes are distributed on the peripheral walls of the cylinder sections, and the outer peripheral walls of the cylinder sections are provided with an annular guide plate, which is inclined away from the end wall of the mixing cylinder, and the annular guide plate is used to change the airflow direction of the diversion holes of adjacent cylinder sections; the mixing cylinder is provided with a reciprocating drive component, and the reciprocating drive component is used to drive the cylinder section away from the end wall of the mixing cylinder to move reciprocally.

[0013] By adopting the above technical solution, the reciprocating drive member can drive the cylinder sections of the mixing cylinder to gradually retract or extend. When the cylinder sections are retracted or extended, the airflow flowing out of the diversion hole swings up and down along the length direction of the mixing cylinder under the guidance of the annular guide plate, which is beneficial to further improve the mixing degree of the gas.

[0014] Optionally, the diverter inner cylinder is conical, and the rotating drive paddle includes a plurality of drive blades, which are distributed in a circular array around the center line of the diverter inner cylinder, and the drive blades are fixed to the inner wall of the diverter inner cylinder, and the drive blades are arranged to be inclined relative to the length direction of the diverter inner cylinder.

[0015] By adopting the above technical solution, the flow dividing inner cylinder is set to be conical, so that the inner peripheral wall of the flow dividing inner cylinder can guide the airflow entering the flow dividing inner cylinder, which is conducive to reducing the pressure loss of the airflow switching in the flow dividing inner cylinder. The driving blades of the rotating driving paddle are fixed to the inner wall of the flow dividing inner cylinder, so that the installation of the flow dividing blades is more stable and reliable.

[0016] Optionally, the diverter inner cylinder is provided with a plurality of plug-in seams, the plurality of plug-in seams correspond one-to-one to the plurality of driving blades, the driving blades are plugged into the corresponding plug-in seams, and the driving blades are fixed to the outer circumferential surface of the diverter inner cylinder by welding.

[0017] By adopting the above technical solution, the splitter blades are connected to the peripheral wall of the splitter inner cylinder by plugging and then welding, so that the installation of the driving blades is more convenient.

[0018] Optionally, the end of the intake pipe penetrates into the inner side of the mixing cylinder, and a limiting ring is provided at the edge of the axial port of the intake pipe; the diverter inner cylinder comprises a cylinder body and an annular end plate, the annular end plate is located between the limiting ring and the end wall of the mixing cylinder, and planar thrust bearings are provided on both sides of the annular end plate, one of the planar thrust bearings is located between the limiting ring and the annular end plate, and the other is located between the annular end plate and the end wall of the mixing cylinder, and the intake pipe sleeve is provided with a compression spring, one end of the compression spring abuts against the planar thrust bearing, and the other end abuts against the end wall of the mixing cylinder.

[0019] By adopting the above technical solution, planar thrust ball bearings are respectively arranged on both sides of the annular end plate of the flow dividing inner cylinder, and the compression spring forces the annular end plate of the flow dividing inner cylinder to press the limiting ring of the intake pipe, so that the annular end plate is in close contact with the two planar thrust ball bearings. When the flow dividing inner cylinder rotates, the planar thrust ball bearings can reduce the resistance during the rotation of the flow dividing inner cylinder, so that the rotation of the flow dividing inner cylinder is smooth and stable.

[0020] Optionally, the air supply pipeline is provided with a one-way valve, which is located on a side of the air supply control valve close to the mixing cylinder; air intake control valves are respectively provided at both ends of the air intake pipe, and the air intake control valves are pneumatic valves; one of the multiple air supply control valves serves as a starting valve, and the remaining air supply control valves are slave valves, which are pneumatic valves, and each pneumatic valve is provided with an air source control pipe; the air source control pipe of the air intake control valve is connected to the air supply pipeline of the same corresponding slave valve, and the air source control pipe of the slave valve is connected to another air supply pipeline, and the air source control pipe of each slave valve corresponds to an air supply pipeline, and the air source control pipe of one slave valve is connected to the air supply pipeline where the starting valve is located; the connection point between the air source control pipe and the air supply pipeline is located between the one-way valve and the air supply control valve.

[0021] By adopting the above technical solution, when the gas mixing device is working, the starting valve is opened first. After the gas supply pipeline where the starting valve is located is ventilated, each gas source control pipe is ventilated in turn, so that the driven valve and the intake control valve are opened in turn; in this case, only when all the gas supply pipelines are ventilated, the intake pipe can input gas into the gas mixing cylinder, which is beneficial to ensure the normal progress of the gas mixing operation and reduce the situation of missing gas components in the mixed gas.

[0022] Optionally, the air source control pipe is provided with a piston cylinder, and the piston cylinder is arranged in the middle section of the air source control pipe, and nitrogen or inert gas is stored in the pipe section of the air source control pipe between the piston cylinder and the pneumatic valve.

[0023] By adopting the above technical solution, the air source control pipe is divided into two sections by the piston cylinder, and the pipe section of the air source control pipe connected to the pneumatic valve is filled with nitrogen or inert gas. When the air supply pipeline connected to the air source control pipe is ventilated, the gas in the air supply pipeline indirectly squeezes the nitrogen or inert gas through the piston of the piston cylinder, and the nitrogen or inert gas indirectly controls the opening and closing of the pneumatic valve, and the nitrogen or inert gas is not easy to damage the structure of the pneumatic valve.

[0024] A method for multi-component gas mixing under high pressure, based on any one of the multi-component gas mixing devices under high pressure described above, comprises the following steps: storing different gases to be mixed in different pressure storage tanks under pressure; first opening the gas transmission control valve, and then opening each gas supply control valve; directly inputting the mixed gas into the gas using facility; first closing each gas supply control valve, and then closing the gas transmission control valve.

[0025] By adopting the above technical solution, after preparing the mixed gas, the gas supply control valve is closed first, and then the gas transmission control valve is closed to release the pressure in the gas mixing cylinder.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] When the gas mixing device is working, the high-pressure gases in different high-pressure storage tanks flow into the intake pipe at the same time, and after meeting in the intake pipe, they enter the mixing cylinder from both ends of the intake pipe at the same time. The gas in the intake pipe enters the mixing cylinder in a straight line from the other end of the intake pipe through the end wall of the mixing cylinder. In the process of the two airflows with different flow modes meeting each other in the mixing cylinder, a large mutual disturbance is formed between the two airflows, so that the gas can be fully mixed when discharged from the gas pipeline.

[0028] When the airflow passes through the split inner cylinder, it pushes the rotating driving paddle, so that the rotating driving paddle drives the split inner cylinder to rotate, so that the airflow enters the mixing cylinder in a rotating flow manner, which is beneficial to increase the speed difference between different airflows in the mixing cylinder, thereby further improving the mixing effect of the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of the multi-component gas mixing device under high pressure of Example 1.

[0030] Figure 2 Schematic diagram of the internal structure of the gas mixing cylinder of Example 1.

[0031] Figure 3 Schematic diagram of the internal structure of the gas mixing cylinder of Example 2.

[0032] Figure 4 Schematic diagram of the internal structure of the gas mixing cylinder of Example 3.

[0033] Figure 5 It is a schematic structural diagram of a multi-component gas mixing device under high pressure of Example 4.

[0034] Description of reference numerals:

[0035] 1. High-pressure storage tank; 2. Air supply pipeline; 21. Air supply control valve; 22. One-way valve; 3. Inlet pipe; 301. Axial port; 302. Tangential port; 303. Limit ring; 31. Inlet control valve; 4. Mixing cylinder; 41. Cylinder; 42. Conical cylinder; 5. Air delivery pipeline; 51. Air delivery control valve; 6. Diverter inner cylinder; 61. Cylinder body; 62. Annular end plate; 63. Cylinder section; 631. Annular outer edge; 632. Limit inner edge; 633. Annular guide plate; 64. Diverter hole; 65. Plane thrust bearing; 66. Compression spring; 68. Joint; 7. Rotary drive paddle; 71. Drive paddle; 8. Reciprocating drive member; 81. Motor; 82. Cam; 9. Air source control tube; 91. Piston cylinder. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-5 This application is described in further detail. Example 1

[0037] The present application embodiment discloses a high-pressure multi-component gas mixing device. Figure 1 and Figure 2 The multi-component gas mixing device under high pressure includes a plurality of high-pressure storage tanks 1, the high-pressure storage tanks 1 are provided with a gas supply pipeline 2, the gas supply pipeline 2 is provided with a gas supply control valve 21, and the plurality of gas supply pipelines 2 are commonly connected to an air intake pipe 3. Both ends of the air intake pipe 3 are commonly connected to a gas mixing cylinder 4, the gas mixing cylinder 4 includes a cylindrical portion 41 and a conical portion 42, one end of the cylindrical portion 41 is connected to the large end of the conical portion 42, and the end of the cylindrical portion 41 away from the conical portion 42 has an end wall. One end of the air intake pipe 3 is connected to the outer peripheral wall of the cylindrical portion 41 in a tangential introduction manner, and the other end of the air intake pipe 3 is connected to the end wall of the gas mixing cylinder 4. The small end of the conical portion 42 is connected to a gas delivery pipeline 5, and the gas delivery pipeline 5 is provided with a gas delivery control valve 51.

[0038] When the gas mixing device is working, the gas supply control valves 21 on each gas supply pipeline 2 are opened, so that the high-pressure gases in different high-pressure storage tanks 1 flow into the intake pipe 3 at the same time, and after intersecting in the intake pipe 3, they enter the mixing cylinder 4 from both ends of the intake pipe 3 at the same time. After the gas in the intake pipe 3 enters the mixing cylinder 4 tangentially from one end of the intake pipe 3, a swirl is formed along the inner wall of the mixing cylinder 4; the gas in the intake pipe 3 enters from the other end of the intake pipe 3 through the end wall of the mixing cylinder 4 in a straight line direction, and the two airflows with different flow modes in the mixing cylinder 4 intersect and mix with each other, so that the gas is mixed immediately.

[0039] Reference Figure 1 The air supply pipeline 2 is provided with a one-way valve 22, which is located on the side of the air supply control valve 21 close to the mixing cylinder 4. The one-way valve 22 can make the gas in the air supply pipeline 2 enter the air intake pipe 3 in one direction; air intake control valves 31 are respectively provided at both ends of the air intake pipe 3, and the air intake control valves 31 are pneumatic valves; one of the multiple air supply control valves 21 is used as a starting valve, which is an electric valve or a manual valve, and the remaining air supply control valves 21 are driven valves, which are pneumatic valves; each pneumatic valve is provided with an air source control pipe 9; the air source control pipe 9 of the air intake control valve 31 is connected to the air supply pipeline 2 of the same corresponding driven valve, and the air source control pipe 9 of the driven valve is connected to another air supply pipeline 2, and the air source control pipe 9 of each driven valve corresponds to an air supply pipeline 2, and the air source control pipe 9 of one driven valve is connected to the air supply pipeline 2 where the starting valve is located; the connection point between the air source control pipe 9 and the air supply pipeline 2 is located between the one-way valve 22 and the air supply control valve 21.

[0040] In order to explain the actuation method of the pneumatic valve more clearly, the following explanation is given here:

[0041] The number of air supply control valves 21 is N, and the air supply control valves 21 are numbered 1, 2, ... N, respectively, wherein the No. 1 air supply control valve 21 is a start valve, and in this embodiment, N is specifically set to 4; the air source control pipe 9 of the No. 2 air supply control valve 21 is connected to the air supply pipeline 2 of the No. 1 air supply control valve 21, and the air source control pipe 9 of the No. N air supply control valve 21 is connected to the air supply pipeline 2 of the No. N-1 air supply control valve 21. The air source control pipes 9 of the two air intake control valves 31 are connected to the air supply pipeline 2 of the No. N air supply control valve 21.

[0042] When mixing gas using the gas mixing device, open the start valve, that is, open the No. 1 gas supply control valve 21, then open the No. 2 gas supply control valve 21 to the No. N gas supply control valve 21 in sequence, and then open the two intake control valves 31 to allow the gas in the intake pipe 3 to enter the mixing cylinder 4. In this case, only when all the gas supply pipelines are fully ventilated, the intake pipe 3 can input gas into the mixing cylinder 4, which is conducive to ensuring the normal progress of the gas mixing operation and reducing the situation of missing gas components in the mixed gas.

[0043] Reference Figure 2 The port connecting the air inlet pipe 3 to the end wall of the mixing cylinder 4 is set as an axial port 301, and the port connecting the air inlet pipe 3 to the peripheral wall of the mixing cylinder 4 is set as a tangential port 302; a flow dividing inner cylinder 6 is provided in the mixing cylinder 4, and the flow dividing inner cylinder 6 is a conical cylinder, and the flow dividing inner cylinder 6 is concentrically arranged with the mixing cylinder 4, and the flow dividing inner cylinder 6 is communicated with the axial port 301 of the air inlet pipe 3, and the end of the flow dividing inner cylinder 6 away from the axial port 301 is closed, and the outer peripheral wall of the flow dividing inner cylinder 6 is evenly provided with flow dividing holes 64. The flow dividing inner cylinder 6 is connected to the mixing cylinder 4 concentrically, and a rotating driving paddle 7 is fixedly arranged on the inner side of the flow dividing inner cylinder 6, and the axis of the rotating driving paddle 7 coincides with the center line of the flow dividing inner cylinder 6.

[0044] When the airflow passes through the splitter inner cylinder 6, it pushes the rotating driving paddle 7, so that the rotating driving paddle 7 drives the splitter inner cylinder 6 to rotate, so that the airflow enters the mixing cylinder 4 in a rotating flow manner, which is beneficial to increase the speed difference between different airflows in the mixing cylinder 4, thereby helping to further improve the mixing effect of the gas.

[0045] This embodiment also discloses a multi-component gas mixing method under high pressure, based on the multi-component gas mixing device under high pressure, comprising the following steps:

[0046] Step 1, storing different gases to be mixed in different pressure storage tanks under pressure;

[0047] Step 2, first open the gas transmission control valve 51, and then open each gas supply control valve 21;

[0048] Step 3, directly inputting the mixed gas into a gas-using facility;

[0049] Step 4: first close each gas supply control valve 21 , and then close the gas transmission control valve 51 . Example 2

[0050] Reference Figure 3 The difference between this embodiment and the first embodiment is that the rotating driving paddle 7 includes a plurality of driving blades 71, which are arranged in a circular array around the center line of the flow dividing inner cylinder 6, and the driving blades 71 are arranged relatively inclined with respect to the length direction of the flow dividing inner cylinder 6. The flow dividing inner cylinder 6 is provided with a plurality of plug-in seams 68, which correspond to the plurality of driving blades 71 one by one, and the driving blades 71 are plugged with the corresponding plug-in seams 68, and the driving blades 71 are welded and fixed to the outer circumference of the flow dividing inner cylinder 6, so that the connection between the driving blades 71 and the flow dividing inner cylinder 6 is relatively stable and reliable.

[0051] The axial port 301 of the intake pipe 3 is located on the inner side of the mixing cylinder 4, and a limiting ring 303 is provided at the edge of the axial port 301 of the intake pipe 3; the splitter inner cylinder 6 includes a cylinder body 61 and an annular end plate 62, the annular end plate 62 is located between the limiting ring 303 and the end wall of the mixing cylinder 4, and planar thrust bearings 65 are provided on both sides of the annular end plate 62, one of the planar thrust bearings 65 is located between the limiting ring 303 and the annular end plate 62, and the other is located between the annular end plate 62 and the end wall of the mixing cylinder 4, and the intake pipe 3 is sleeved with a compression spring 66, one end of the compression spring 66 abuts against the planar thrust bearing 65, and the other end abuts against the end wall of the mixing cylinder 4.

[0052] The compression spring 66 forces the annular end plate 62 to press the limit ring 303. The annular end plate 62 fits tightly with the two planar thrust ball bearings. The planar thrust ball bearings can reduce the resistance during the rotation of the diverter inner cylinder 6, making the rotation of the diverter inner cylinder 6 more stable and smooth. Example 3

[0053] Reference Figure 4 The difference between this embodiment and embodiment 1 is that the structure of the flow-dividing inner cylinder 6 is different from that of embodiment 1. The flow-dividing inner cylinder 6 includes a plurality of cylinder segments 63 which are slidably sleeved in sequence. The cross-section of the cylinder segment 63 is rectangular. The cross-sectional size of each cylinder segment 63 gradually decreases in the direction away from the end wall of the mixing cylinder 4. An annular outer edge 631 is provided at one end of the cylinder segment 63 close to the end wall of the mixing cylinder 4. The annular outer edge 631 abuts against the inner circumference of the adjacent cylinder segment 63. A limiting inner edge 632 is provided at one end of the cylinder segment 63 away from the end wall of the mixing cylinder 4. The limiting inner edge 632 abuts against the outer circumference of another adjacent cylinder segment 63. The flow-dividing holes 64 are distributed on the circumferential wall of the cylinder segment 63. An annular guide plate 633 is provided on the outer circumferential wall of the cylinder segment 63. The annular guide plate 633 is inclined away from the end wall of the mixing cylinder 4. The annular guide plate 633 is used to change the airflow direction of the flow-dividing holes 64 of the adjacent cylinder segment 63.

[0054] The mixing cylinder 4 is provided with a reciprocating drive member 8, which is used to drive the cylinder section 63 away from the end wall of the mixing cylinder 4 to reciprocate. The reciprocating drive member 8 includes a motor 81, which is installed on the outside of the mixing cylinder 4, and the output shaft of the motor 81 penetrates the inside of the mixing cylinder 4; the output shaft of the motor 81 is provided with a cam 82, and the cam 82 is located on the inside of the mixing cylinder 4. The cam 82 abuts against the end surface of the cylinder section 63 of the splitter inner cylinder 6 away from the end wall of the mixing cylinder 4, and the motor 81 drives the splitter inner cylinder 6 to expand and contract through the cam 82.

[0055] The reciprocating drive member 8 can drive the cylinder section 63 of the diverter inner cylinder 6 to gradually retract or extend. When the cylinder section 63 is retracted or extended, the airflow flowing out of the diverter hole 64 swings up and down along the length direction of the mixing cylinder 4 under the guidance of the annular guide plate 633, which is beneficial to further improve the mixing degree of the gas. Example 4

[0056] Reference Figure 5 The difference between this embodiment and embodiment 1 is that the air source control pipe 9 is provided with a piston cylinder 91, and the piston cylinder 91 is arranged in the middle section of the air source control pipe 9. Nitrogen or inert gas is stored in the pipe section of the air source control pipe 9 between the piston cylinder 91 and the pneumatic valve.

[0057] The air source control pipe 9 is divided into two sections by the piston cylinder 91, and the pipe section of the air source control pipe 9 connected to the pneumatic valve is filled with nitrogen or inert gas. When the air supply pipeline connected to the air source control pipe 9 is ventilated, the gas in the air supply pipeline indirectly squeezes the nitrogen or inert gas through the piston of the piston cylinder 91, and the nitrogen or inert gas indirectly controls the opening and closing of the pneumatic valve, and the nitrogen or inert gas is not easy to damage the structure of the pneumatic valve.

[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-component gas mixing device under high pressure, characterized in that: The invention comprises a plurality of high-pressure storage tanks (1), wherein the high-pressure storage tanks (1) are provided with an air supply pipeline (2), wherein the air supply pipeline (2) is provided with an air supply control valve (21), wherein the plurality of air supply pipelines (2) are commonly connected to an air intake pipe (3), wherein both ends of the air intake pipe (3) are commonly connected to an air mixing cylinder (4), wherein both ends of the air intake pipe (3) are connected to the same end of the air mixing cylinder (4); wherein one end of the air intake pipe (3) is connected to the outer peripheral wall of the air mixing cylinder (4) in a tangentially introduced manner, and the other end of the air intake pipe (3) is connected to the end wall of the air mixing cylinder (4); wherein the end of the air mixing cylinder (4) away from the air intake pipe (3) is connected to an air delivery pipeline (5), wherein the air delivery pipeline (5) is provided with an air delivery control valve (51); The port of the air intake pipe (3) connected to the end wall of the mixing cylinder (4) is set as an axial port (301); a flow dividing inner cylinder (6) is provided in the mixing cylinder (4), the flow dividing inner cylinder (6) is arranged concentrically with the mixing cylinder (4), the flow dividing inner cylinder (6) is communicated with the axial port (301) of the air intake pipe (3), one end of the flow dividing inner cylinder (6) away from the axial port (301) is closed, and a plurality of flow dividing holes (64) are provided on the outer peripheral wall of the flow dividing inner cylinder (6); The flow-dividing inner cylinder (6) is connected to the gas mixing cylinder (4) in a coaxially rotatable manner, a rotating drive paddle (7) is fixedly arranged on the inner side of the flow-dividing inner cylinder (6), and the axis of the rotating drive paddle (7) coincides with the center line of the flow-dividing inner cylinder (6); The flow-dividing inner cylinder (6) comprises a plurality of cylinder sections (63) which are slidably sleeved in sequence with each other, and the cross-sectional dimensions of each cylinder section (63) gradually decrease in a direction away from the end wall of the mixing cylinder (4); the flow-dividing holes (64) are distributed on the peripheral wall of the cylinder section (63), and the outer peripheral wall of the cylinder section (63) is provided with an annular flow guide plate (633), and the annular flow guide plate (633) is inclined away from the end wall of the mixing cylinder (4), and the annular flow guide plate (633) is used to change the airflow direction of the flow-dividing holes (64) of adjacent cylinder sections (63); the mixing cylinder (4) is provided with a reciprocating drive member (8), and the reciprocating drive member (8) is used to drive the cylinder section (63) away from the end wall of the mixing cylinder (4) to move back and forth.

2. A multi-component gas mixing device under high pressure according to claim 1, characterized in that: The air supply pipeline (2) is provided with a one-way valve (22), and the one-way valve (22) is located on a side of the air supply control valve (21) close to the mixing cylinder (4); air intake control valves (31) are respectively provided at both ends of the air intake pipe (3), and the air intake control valves (31) are pneumatic valves; one of the plurality of air supply control valves (21) is used as a starting valve, and the remaining air supply control valves (21) are driven valves, and the driven valves are pneumatic valves, and each pneumatic valve is provided with an air source control pipe (9). The air source control pipe (9) of the air intake control valve (31) is connected to the air supply pipeline (2) of the same corresponding slave valve, and the air source control pipe (9) of the slave valve is connected to another air supply pipeline (2). The air source control pipe (9) of each slave valve corresponds to one air supply pipeline (2), and the air source control pipe (9) of one slave valve is connected to the air supply pipeline (2) where the start valve is located. The connection point between the air source control pipe (9) and the air supply pipeline (2) is located between the one-way valve (22) and the air supply control valve (21).

3. A multi-component gas mixing device under high pressure according to claim 2, characterized in that: The air source control pipe (9) is provided with a piston cylinder (91), and the piston cylinder (91) is arranged in the middle section of the air source control pipe (9). Nitrogen or inert gas is stored in the pipe section of the air source control pipe (9) between the piston cylinder (91) and the pneumatic valve.

4. A multi-component gas mixing method under high pressure, based on the multi-component gas mixing device under high pressure according to any one of claims 1 to 3, characterized in that: The steps include: The different gases that need to be mixed are stored in different pressure tanks under pressure; First open the gas transmission control valve (51), and then open each gas supply control valve (21); The mixed gas is directly input into the gas-using facilities; First, close each gas supply control valve (21), and then close the gas transmission control valve (51).

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