Control method for two-stage ionic liquid seal gas compressor

Abstract

The invention relates to the technical field of ionic liquid cylinders, in particular to a two-stage ionic liquid seal gas compressor control method. Comprising a first-stage ionic liquid seal compression air cylinder and a second-stage ionic liquid seal compression air cylinder, the first-stage ionic liquid seal compression air cylinder is connected with a gas storage cylinder, a pressure sensor PT is arranged on the gas storage cylinder, an electromagnetic switch valve KT1 and a one-way valve are arranged between the gas storage cylinder and the first-stage ionic liquid seal compression air cylinder, and a pressure sensor PT1 is arranged on a first buffer tank; an air outlet of the secondary ionic liquid seal compression air cylinder is connected with a second water bath cooler through a pipeline, the second water bath cooler is connected with an air inlet of a second buffer tank through a pipeline, a pressure sensor PT3 is arranged on the second buffer tank, and an air outlet of the second buffer tank is connected with a hydrogen internal combustion engine; starting and stopping of the first-stage ionic liquid seal compression air cylinder and the second-stage ionic liquid seal compression air cylinder are controlled according to changes of pressure numerical values of the pressure sensor PT, the pressure sensor PT1 and the pressure sensor PT3, and therefore the purpose of skill consumption reduction is achieved.

Description

Technical field:

[0001] The invention relates to the technical field of ionic liquid cylinders, and in particular to a control method for a two-stage ionic liquid-sealed gas compressor. Background technology:

[0002] At present, the ion liquid seal compression cylinder is a new type of equipment for pressurizing gas. Its structure is as shown in the patent application with publication number CN116044712A, which discloses an ion liquid compressor. By injecting ion liquid into the compression chamber of the cylinder, the piston is cooled and lubricated and the sealing effect between the piston and the cylinder is improved. In order to increase the gas pressure, two-stage compression cylinders are often used in series. At present, in the actual operation process, the first-level ion liquid seal compression cylinder and the second-level ion liquid seal compression cylinder generally keep working continuously, and cannot be automatically controlled to start and stop according to the pressure of the front gas storage bottle, the exhaust pressure of the first-level ion liquid seal compression cylinder, and the exhaust pressure of the second-level ion liquid seal compression cylinder. This undoubtedly increases energy consumption and costs. There is currently no good solution to the above problems.

[0003] In summary, the above-mentioned problems in the two-stage ion liquid seal compression cylinder have become technical problems that need to be solved urgently in the industry. Summary of the invention:

[0004] In order to make up for the deficiencies of the prior art, the present invention provides a two-stage ion liquid-sealed gas compressor control method, which solves the problem of increased energy consumption caused by continuous operation of the first-stage ion liquid-sealed compression cylinder and the second-stage ion liquid-sealed compression cylinder.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A two-stage ion liquid-sealed gas compressor control method includes a first-stage ion liquid-sealed compression cylinder and a second-stage ion liquid-sealed compression cylinder, the first-stage ion liquid-sealed compression cylinder and the second-stage ion liquid-sealed compression cylinder are driven by a driving device respectively, an air inlet of the first-stage ion liquid-sealed compression cylinder is connected to a gas storage bottle through a pipeline, a pressure sensor PT is provided on the gas storage bottle, and an electromagnetic switch valve KT1 and a one-way valve are provided on the pipeline between the gas storage bottle and the first-stage ion liquid-sealed compression cylinder;

[0007] The air outlet of the primary ion liquid-sealed compression cylinder is connected to the air inlet of the secondary ion liquid-sealed compression cylinder through a pipeline. A first water bath cooler and a first buffer tank are arranged on the pipeline between the primary ion liquid-sealed compression cylinder and the secondary ion liquid-sealed compression cylinder. A pressure sensor PT1 is arranged on the first buffer tank.

[0008] The gas outlet of the secondary ion liquid-sealed compression cylinder is connected to the second water bath cooler through a pipeline, and the second water bath cooler is further connected to the gas inlet of the second buffer tank through a pipeline. The second buffer tank is provided with a pressure sensor PT3, and the gas outlet of the second buffer tank is connected to the hydrogen internal combustion engine;

[0009] According to the changes in the pressure values ​​of the pressure sensor PT, the pressure sensor PT1 and the pressure sensor PT3, the start and stop of the first-level ion liquid-sealed compression cylinder and the second-level ion liquid-sealed compression cylinder are controlled to achieve energy saving and consumption reduction.

[0010] When the pressure sensor PT≥28MPa and the pressure sensor PT3≥32.5MPa, the electromagnetic switch valve KT1 is closed, and the first-level ion liquid seal compression cylinder and the second-level ion liquid seal compression cylinder both stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine;

[0011] When the pressure sensor PT≥28MPa and the pressure sensor PT3<28MPa, the electromagnetic switch valve KT1 opens, and the first-level ion liquid seal compression cylinder and the second-level ion liquid seal compression cylinder stop working, and the high-pressure gas stored in the gas cylinder is supplied to the hydrogen internal combustion engine;

[0012] When 14MPa≤pressure sensor PT<28MPa, and pressure sensor PT3≥32.5MPa, the electromagnetic switch valve KT1 is closed, and both the primary ion liquid seal compression cylinder and the secondary ion liquid seal compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine;

[0013] When 14MPa≤pressure sensor PT<28MPa, pressure sensor PT3<28MPa, electromagnetic switch valve KT1 opens, and the secondary ion liquid seal compression cylinder starts, and the second water bath cooler works until the pressure sensor PT3≥32.5MPa, and then the electromagnetic switch valve KT1 closes, and both the primary ion liquid seal compression cylinder and the secondary ion liquid seal compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine;

[0014] When 6MPa≤pressure sensor PT<14MPa, and pressure sensor PT1>14MPa, the electromagnetic switch valve KT1 opens, and the primary ion liquid-sealed compression cylinder does not work at this time. The high-pressure gas stored in the first buffer tank is supplied to the secondary ion liquid-sealed compression cylinder, and the secondary ion liquid-sealed compression cylinder starts, and the second water bath cooler works until the pressure sensor PT3≥32.5MPa. The electromagnetic switch valve KT1 is closed at this time. Both the primary ion liquid-sealed compression cylinder and the secondary ion liquid-sealed compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine;

[0015] When 6MPa≤pressure sensor PT<14MPa, pressure sensor PT1≤13.5MPa, electromagnetic switch valve KT1 opens, the first-level ion liquid seal compression cylinder works, the gas is pressurized, the second-level ion liquid seal compression cylinder starts, and the second water bath cooler works until the pressure sensor PT3≥32.5MPa, the electromagnetic switch valve KT1 closes, at which time both the first-level ion liquid seal compression cylinder and the second-level ion liquid seal compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine;

[0016] When the pressure sensor PT is less than 6MPa, the electromagnetic switch valve KT1 is closed and a new gas cylinder needs to be replaced.

[0017] The driving device includes a hydraulic oil tank, on which an oil pump is provided. One branch of the oil pump is connected to the primary ion liquid seal compression cylinder via the electromagnetic switch valve SOV1 and the first integrated hydraulic valve. The first integrated hydraulic valve is provided with an electromagnetic switch valve KT2 and an electromagnetic bypass valve KT5. Another branch is connected to the secondary ion liquid seal compression cylinder via the electromagnetic switch valve SOV2 and the second integrated hydraulic valve. The second integrated hydraulic valve is provided with an electromagnetic switch valve KT3 and an electromagnetic bypass valve KT4.

[0018] The gas storage cylinder is provided with a temperature sensor TT.

[0019] A temperature sensor TT1 and a temperature sensor TT2 are provided on the front and rear sides of the first water bath cooler, and the first water bath cooler is connected to a water cooling unit COOL1.

[0020] The second water bath cooler is provided with a temperature sensor TT3 and a temperature sensor TT4 at the front and rear sides thereof, and the second water bath cooler is connected to the water cooling unit COOL1.

[0021] The second buffer tank is provided with a temperature sensor TT5.

[0022] The hydraulic oil tank is provided with a temperature sensor TT6.

[0023] An ion liquid separator is provided on the pipeline between the second water bath cooler and the second buffer tank, and a pressure sensor PT2 is provided on the pipeline between the ion liquid separator and the second water bath cooler. The bottom of the ion liquid separator is connected to the top of the primary ion liquid seal compression cylinder via an electronic switch valve and an ion liquid reflux pipeline.

[0024] The present invention adopts the above scheme and has the following advantages:

[0025] By providing a pressure sensor PT on the gas cylinder, providing a first buffer tank on the pipeline between the primary ion liquid seal compression cylinder and the secondary ion liquid seal compression cylinder, and providing a pressure sensor PT1 on the first buffer tank, the top of the ion liquid separator is connected to the second buffer tank through a pipeline, and the second buffer tank is provided with a pressure sensor PT3, according to the pressure value changes of the pressure sensor PT, the pressure sensor PT1 and the pressure sensor PT3, the start and stop of the primary ion liquid seal compression cylinder and the secondary ion liquid seal compression cylinder are controlled to avoid the primary ion liquid seal compression cylinder and the secondary ion liquid seal compression from working continuously, thereby achieving the purpose of energy saving and consumption reduction. Similarly, the start and stop of the first water bath cooler and the second water bath cooler can also be controlled according to the temperature value changes of the temperature sensor TT1, the temperature sensor TT2 and the temperature sensor TT5, which can also achieve the purpose of energy saving and consumption reduction. Description of the drawings:

[0026] Figure 1 It is a schematic diagram of the structural principle of the present invention.

[0027] Figure 2 Schematic diagram of the control logic of the present invention.

[0028] In the figure, 1. a primary ion liquid-sealed compression cylinder, 2. a secondary ion liquid-sealed compression cylinder, 3. a gas storage cylinder, 4. a one-way valve, 5. a first water bath cooler, 6. a first buffer tank, 7. an ion liquid separator, 8. a second water bath cooler, 9. an electronic switch valve, 10. an ion liquid reflux pipeline, 11. a second buffer tank, 12. a hydrogen internal combustion engine, 13. a hydraulic oil tank, 14. an oil pump, 15. a first integrated hydraulic valve, and 16. a second integrated hydraulic valve. Specific implementation method:

[0029] In order to clearly illustrate the technical features of the present solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0030] like Figure 1-2 As shown, a two-stage ion liquid-sealed gas compressor control method comprises a first-stage ion liquid-sealed compression cylinder 1 and a second-stage ion liquid-sealed compression cylinder 2, wherein the first-stage ion liquid-sealed compression cylinder 1 and the second-stage ion liquid-sealed compression cylinder 2 are driven by driving devices respectively, an air inlet of the first-stage ion liquid-sealed compression cylinder 1 is connected to a gas storage bottle 3 through a pipeline, a pressure sensor PT is provided on the gas storage bottle 3, and the gas pressure of the gas storage bottle 3 can be detected, and an electromagnetic switch valve KT1 and a one-way valve 4 are provided on the pipeline between the gas storage bottle 3 and the first-stage ion liquid-sealed compression cylinder 1;

[0031] The gas outlet of the primary ion liquid-sealed compression cylinder 1 is connected to the gas inlet of the secondary ion liquid-sealed compression cylinder 2 through a pipeline. A first water bath cooler 5 and a first buffer tank 6 are provided on the pipeline between the primary ion liquid-sealed compression cylinder 1 and the secondary ion liquid-sealed compression cylinder 2. A pressure sensor PT1 is provided on the first buffer tank 6 to detect the gas pressure of the first buffer tank 6.

[0032] The gas outlet of the secondary ion liquid-sealed compression cylinder 2 is connected to the second water bath cooler 8 through a pipeline, and the second water bath cooler 8 is further connected to the gas inlet of the second buffer tank 11 through a pipeline. The second buffer tank 11 is provided with a pressure sensor PT3, which can detect the gas pressure of the second buffer tank 11. The gas outlet of the second buffer tank 11 is connected to the hydrogen internal combustion engine 12;

[0033] According to the changes in the pressure values ​​of the pressure sensors PT, PT1 and PT3, the start and stop of the primary ion liquid seal compression cylinder 1 and the secondary ion liquid seal compression cylinder 2 are controlled to achieve energy saving and consumption reduction.

[0034] The driving device includes a hydraulic oil tank 13, on which an oil pump 14 is provided. A branch of the oil pump 14 is connected to the primary ion liquid-sealed compression cylinder 1 via an electromagnetic switch valve SOV1 and a first integrated hydraulic valve 15. The first integrated hydraulic valve 15 is provided with an electromagnetic switch valve KT2 and an electromagnetic bypass valve KT5. Another branch is connected to the secondary ion liquid-sealed compression cylinder 2 via an electromagnetic switch valve SOV2 and a second integrated hydraulic valve 16. The second integrated hydraulic valve 16 is provided with an electromagnetic switch valve KT3 and an electromagnetic bypass valve KT4. When the solenoid switch valve SOV1 and the solenoid switch valve KT2 are opened, the oil pump can supply hydraulic oil to the primary ion liquid seal compression cylinder to make the primary ion liquid seal compression cylinder work; when the solenoid switch valve SOV2 and the solenoid switch valve KT3 are opened, the oil pump can supply hydraulic oil to the secondary ion liquid seal compression cylinder to make the secondary ion liquid seal compression cylinder work; when the solenoid switch valve SOV1 is opened, the solenoid switch valve KT2 is closed, and the solenoid bypass valve KT5 is opened, the hydraulic oil can flow back to the hydraulic oil tank through the solenoid bypass valve KT5; when the solenoid switch valve SOV2 is opened, the solenoid switch valve KT3 is closed, and the solenoid bypass valve KT4 is opened, the hydraulic oil can flow back to the hydraulic oil tank through the solenoid bypass valve KT4.

[0035] The gas cylinder 3 is provided with a temperature sensor TT, which can detect the temperature of the gas in the gas cylinder 3 .

[0036] A temperature sensor TT1 and a temperature sensor TT2 are provided on the front and rear sides of the first water bath cooler 5 , and the first water bath cooler 5 is connected to a water cooling unit COOL1 .

[0037] The second water bath cooler 8 is provided with a temperature sensor TT3 and a temperature sensor TT4 at the front and rear sides thereof, and the second water bath cooler 8 is connected to the water cooling unit COOL1.

[0038] The second buffer tank 11 is provided with a temperature sensor TT5 for detecting the temperature of the gas in the second buffer tank 11 .

[0039] The hydraulic oil tank 13 is provided with a temperature sensor TT6 for detecting the temperature of the hydraulic oil in the hydraulic oil tank 13 .

[0040] An ion liquid separator 7 is provided on the pipeline between the second water bath cooler 8 and the second buffer tank 11, and a pressure sensor PT2 is provided on the pipeline between the ion liquid separator 7 and the second water bath cooler 8. The bottom of the ion liquid separator 7 is connected to the top of the primary ion liquid seal compression cylinder 1 via an electronic switch valve 9 and an ion liquid reflux pipeline 10.

[0041] Working principle:

[0042] During operation, the hydrogen in the gas storage bottle 3 first enters the primary ion liquid-sealed compression cylinder 1 through the electromagnetic switch valve KT1 and the one-way valve 4, and after being pressurized in the primary ion liquid-sealed compression cylinder 1, enters the first buffer tank 6 through the first water bath cooler 5, and then enters the secondary ion liquid-sealed compression cylinder 2. After being pressurized in the secondary ion liquid-sealed compression cylinder 2, it enters the ion liquid separator 7 through the second water bath cooler 8 to separate the ion liquid from the hydrogen. The separated ion liquid is replenished into the primary ion liquid-sealed compression cylinder 1 through the electromagnetic switch valve 9 and the ion liquid reflux pipeline 10, and the gas enters the second buffer tank 11 through the pipeline, and is then supplied to the hydrogen internal combustion engine 12.

[0043] The monitoring system monitors the air pressure status of pressure sensor PT, pressure sensor PT1, pressure sensor PT2, and pressure sensor PT3.

[0044] Case (1): when the pressure sensor PT≥28MPa and the pressure sensor PT3≥32.5MPa, the electromagnetic switch valve KT1 is closed, the electromagnetic switch valve SOV1 is closed, the electromagnetic switch valve SOV2 is opened, and the electromagnetic bypass valve KT4 is opened. At this time, both the first-stage ion liquid-sealed compression cylinder and the second-stage ion liquid-sealed compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine;

[0045] Case (2): when the pressure sensor PT is ≥ 28 MPa and the pressure sensor PT3 is < 28 MPa, the electromagnetic switch valve KT1 is opened, the electromagnetic switch valve SOV1 is closed, the electromagnetic switch valve SOV2 is opened, and the electromagnetic bypass valve KT4 is opened. At this time, both the first-stage ion liquid seal compression cylinder and the second-stage ion liquid seal compression cylinder stop working, and the high-pressure gas stored in the gas cylinder is supplied to the hydrogen internal combustion engine; and under the above conditions, when the temperature sensor TT5 is > 50°C, the first water bath cooler works, otherwise the first water bath cooler does not work;

[0046] Case (3), when 14MPa≤pressure sensor PT<28MPa, pressure sensor PT3≥32.5MPa, solenoid switch valve KT1 is closed, solenoid switch valve SOV1 is closed, solenoid switch valve SOV2 is opened, and solenoid bypass valve KT4 is opened. At this time, both the primary ion liquid seal compression cylinder and the secondary ion liquid seal compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine;

[0047] Case (4), when 14MPa≤pressure sensor PT<28MPa, pressure sensor PT3<28MPa, solenoid switch valve KT1 opens, solenoid switch valve SOV1 closes, solenoid switch valve SOV2 opens, solenoid bypass valve KT4 closes, the secondary ion liquid seal compression cylinder starts, and the second water bath cooler works until the pressure sensor PT3≥32.5MPa, then the solenoid switch valve KT1 closes, the solenoid switch valve SOV1 closes, the solenoid switch valve SOV2 opens, and the solenoid bypass valve KT4 opens. At this time, both the primary ion liquid seal compression cylinder and the secondary ion liquid seal compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine; and under the above conditions, when the temperature sensor TT2≥40℃ or the temperature sensor TT5>50℃, the first water bath cooler works, otherwise the first water bath cooler does not work;

[0048] Case (5), when 6MPa≤pressure sensor PT<14MPa, pressure sensor PT1>14MPa, electromagnetic switch valve KT1 opens, electromagnetic switch valve SOV1 closes, electromagnetic switch valve SOV2 opens, electromagnetic bypass valve KT4 closes, the primary ion liquid seal compression cylinder does not work, and the high-pressure gas stored in the first buffer tank is supplied to the secondary ion liquid seal compression cylinder, the secondary ion liquid seal compression cylinder starts, and the second water bath cooler works until the pressure sensor PT3≥32.5MPa, the electromagnetic switch valve KT1 closes, the electromagnetic switch valve SOV1 closes, the electromagnetic switch valve SOV2 opens, and the electromagnetic bypass valve KT4 opens. At this time, both the primary ion liquid seal compression cylinder and the secondary ion liquid seal compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine; and under the above conditions, when the temperature sensor TT1≥40℃, the first water bath cooler works, otherwise the first water bath cooler does not work;

[0049] In case (6), when 6MPa≤pressure sensor PT<14MPa, pressure sensor PT1≤13.5MPa, electromagnetic switch valve KT1 opens, electromagnetic switch valve SOV1 opens, the first-level ion liquid seal compression cylinder works, the gas is pressurized, the second-level ion liquid seal compression cylinder starts, and the second water bath cooler works until the pressure sensor PT3≥32.5MPa, the electromagnetic switch valve KT1 closes, the electromagnetic switch valve SOV1 closes, the electromagnetic switch valve SOV2 opens, and the electromagnetic bypass valve KT4 opens. At this time, the first-level ion liquid seal compression cylinder is activated. The compression cylinder and the secondary ion liquid seal compression cylinder both stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine; and under the above conditions, when the temperature sensor TT1 ≥ 40 ° C, the first water bath cooler works, otherwise the first water bath cooler does not work; and under the above conditions, when the temperature sensor TT1 ≥ 40 ° C, the first water bath cooler works, otherwise the first water bath cooler does not work; when the temperature sensor TT2 ≥ 40 ° C or the temperature sensor TT5>50 ° C, the first water bath cooler works, otherwise the first water bath cooler does not work;

[0050] In case (7), when the pressure sensor PT is less than 6MPa, the electromagnetic switch valve KT1 is closed and a new gas cylinder needs to be replaced.

[0051] The above specific implementation manner cannot be used as a limitation on the protection scope of the present invention. For those skilled in the art, any substitution, improvement or change made to the implementation manner of the present invention falls within the protection scope of the present invention.

[0052] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A two-stage ion liquid seal gas compressor control method, characterized in that: It includes a primary ion liquid-sealed compression cylinder and a secondary ion liquid-sealed compression cylinder, which are driven by a driving device respectively, an air inlet of the primary ion liquid-sealed compression cylinder is connected to a gas storage bottle through a pipeline, a pressure sensor PT is provided on the gas storage bottle, and an electromagnetic switch valve KT1 and a one-way valve are provided on the pipeline between the gas storage bottle and the primary ion liquid-sealed compression cylinder; The air outlet of the primary ion liquid-sealed compression cylinder is connected to the air inlet of the secondary ion liquid-sealed compression cylinder through a pipeline. A first water bath cooler and a first buffer tank are arranged on the pipeline between the primary ion liquid-sealed compression cylinder and the secondary ion liquid-sealed compression cylinder. A pressure sensor PT1 is arranged on the first buffer tank. The gas outlet of the secondary ion liquid-sealed compression cylinder is connected to the second water bath cooler through a pipeline, and the second water bath cooler is further connected to the gas inlet of the second buffer tank through a pipeline. The second buffer tank is provided with a pressure sensor PT3, and the gas outlet of the second buffer tank is connected to the hydrogen internal combustion engine; According to the changes in the pressure values ​​of the pressure sensor PT, the pressure sensor PT1 and the pressure sensor PT3, the start and stop of the first-level ion liquid-sealed compression cylinder and the second-level ion liquid-sealed compression cylinder are controlled to achieve energy saving and consumption reduction.

2. A two-stage ion liquid seal gas compressor control method according to claim 1, characterized in that: When the pressure sensor PT≥28MPa and the pressure sensor PT3≥32.5MPa, the electromagnetic switch valve KT1 is closed, and the first-level ion liquid seal compression cylinder and the second-level ion liquid seal compression cylinder both stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine; When the pressure sensor PT≥28MPa and the pressure sensor PT3<28MPa, the electromagnetic switch valve KT1 opens, and the first-level ion liquid seal compression cylinder and the second-level ion liquid seal compression cylinder stop working, and the high-pressure gas stored in the gas cylinder is supplied to the hydrogen internal combustion engine; When 14MPa≤pressure sensor PT<28MPa, and pressure sensor PT3≥32.5MPa, the electromagnetic switch valve KT1 is closed, and both the primary ion liquid seal compression cylinder and the secondary ion liquid seal compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine; When 14MPa≤pressure sensor PT<28MPa, pressure sensor PT3<28MPa, electromagnetic switch valve KT1 opens, and the secondary ion liquid seal compression cylinder starts, and the second water bath cooler works until the pressure sensor PT3≥32.5MPa, and then the electromagnetic switch valve KT1 closes, and both the primary ion liquid seal compression cylinder and the secondary ion liquid seal compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine; When 6MPa≤pressure sensor PT<14MPa, and pressure sensor PT1>14MPa, the electromagnetic switch valve KT1 opens, and the primary ion liquid-sealed compression cylinder does not work at this time. The high-pressure gas stored in the first buffer tank is supplied to the secondary ion liquid-sealed compression cylinder, and the secondary ion liquid-sealed compression cylinder starts, and the second water bath cooler works until the pressure sensor PT3≥32.5MPa. The electromagnetic switch valve KT1 is closed at this time. Both the primary ion liquid-sealed compression cylinder and the secondary ion liquid-sealed compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine; When 6MPa≤pressure sensor PT<14MPa, pressure sensor PT1≤13.5MPa, electromagnetic switch valve KT1 opens, the first-level ion liquid seal compression cylinder works, the gas is pressurized, the second-level ion liquid seal compression cylinder starts, and the second water bath cooler works until the pressure sensor PT3≥32.5MPa, the electromagnetic switch valve KT1 closes, at which time both the first-level ion liquid seal compression cylinder and the second-level ion liquid seal compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is supplied to the hydrogen internal combustion engine; When the pressure sensor PT is less than 6MPa, the electromagnetic switch valve KT1 is closed and a new gas cylinder needs to be replaced.

3. A two-stage ion liquid seal gas compressor control method according to claim 1, characterized in that: The driving device includes a hydraulic oil tank, on which an oil pump is provided. One branch of the oil pump is connected to the primary ion liquid seal compression cylinder via the electromagnetic switch valve SOV1 and the first integrated hydraulic valve. The first integrated hydraulic valve is provided with an electromagnetic switch valve KT2 and an electromagnetic bypass valve KT5. Another branch is connected to the secondary ion liquid seal compression cylinder via the electromagnetic switch valve SOV2 and the second integrated hydraulic valve. The second integrated hydraulic valve is provided with an electromagnetic switch valve KT3 and an electromagnetic bypass valve KT4.

4. A two-stage ion liquid seal gas compressor control method according to claim 1, characterized in that: The gas storage cylinder is provided with a temperature sensor TT.

5. A two-stage ion liquid seal gas compressor control method according to claim 1, characterized in that: A temperature sensor TT1 and a temperature sensor TT2 are provided on the front and rear sides of the first water bath cooler, and the first water bath cooler is connected to a water cooling unit COOL1.

6. A two-stage ion liquid seal gas compressor control method according to claim 1, characterized in that: The second water bath cooler is provided with a temperature sensor TT3 and a temperature sensor TT4 at the front and rear sides thereof, and the second water bath cooler is connected to the water cooling unit COOL1.

7. A two-stage ion liquid seal gas compressor control method according to claim 1, characterized in that: The second buffer tank is provided with a temperature sensor TT5.

8. A two-stage ion liquid seal gas compressor control method according to claim 3, characterized in that: The hydraulic oil tank is provided with a temperature sensor TT6.

9. A two-stage ion liquid seal gas compressor control method according to claim 1, characterized in that: An ion liquid separator is provided on the pipeline between the second water bath cooler and the second buffer tank, and a pressure sensor PT2 is provided on the pipeline between the ion liquid separator and the second water bath cooler. The bottom of the ion liquid separator is connected to the top of the primary ion liquid seal compression cylinder via an electronic switch valve and an ion liquid reflux pipeline.

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