A control method for a two-stage ion liquid seal gas compressor

Abstract

The present 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. The method comprises a first-stage ionic liquid-sealed compression cylinder and a second-stage ionic liquid-sealed compression cylinder, wherein the first-stage ionic liquid-sealed compression cylinder is connected to a gas storage cylinder, which is provided with a pressure sensor PT. An electromagnetic switch valve KT1 and a one-way valve are provided between the gas storage cylinder and the first-stage ionic liquid-sealed compression cylinder, and a first buffer tank is provided with a pressure sensor PT1. The gas outlet of the second-stage ionic liquid-sealed compression cylinder is connected to a second water bath cooler via a pipeline, which is further connected to the gas inlet of the second buffer tank via 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 a hydrogen internal combustion engine. The start and stop of the first-stage ionic liquid-sealed compression cylinder and the second-stage ionic liquid-sealed compression cylinder are controlled according to the pressure value changes of the pressure sensors PT, PT1, and PT3, thereby achieving the purpose of reducing energy consumption.

Description

Technical field:

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

[0002] Currently, ion liquid-sealed compression cylinders are a new type of device for pressurizing gas. Patent application publication number CN116044712A discloses an ionic liquid compressor. By injecting ionic liquid into the compression chamber of the cylinder, this provides cooling and lubrication for the piston and improves the seal between the piston and cylinder. To increase gas pressure, two-stage compression cylinders are often used in series. In actual operation, the first-stage and second-stage ion liquid-sealed compression cylinders typically operate continuously and cannot be automatically started or stopped based on changes in the pressure of the front gas storage cylinder, the exhaust pressure of the first-stage ion liquid-sealed compression cylinder, or the exhaust pressure of the second-stage ion liquid-sealed compression cylinder. This undoubtedly increases energy consumption and costs. Currently, there is no effective solution to this problem.

[0003] In summary, the above-mentioned problems in the two-stage ion liquid seal compression cylinder have become a technical problem that needs 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 the 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, each of which is driven by a driving device. The air inlet of the first-stage ion liquid-sealed compression cylinder is connected to a gas storage cylinder via a pipeline. The gas storage cylinder is provided with a pressure sensor PT. An electromagnetic switch valve KT1 and a one-way valve are provided on the pipeline between the gas storage cylinder and the first-stage ion liquid-sealed compression cylinder.

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

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

[0009] 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 first-level ion liquid seal compression cylinder and the second-level ion liquid seal compression cylinder are controlled to achieve energy saving and consumption reduction.

[0010] When the pressure sensor PT is ≥28MPa and the pressure sensor PT3 is ≥32.5MPa, the electromagnetic switch valve KT1 is closed. 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 used to supply the hydrogen internal combustion engine.

[0011] When the pressure sensor PT is greater than or equal to 28 MPa and the pressure sensor PT3 is less than 28 MPa, the electromagnetic switch valve KT1 opens. 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 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. 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 used to supply the hydrogen internal combustion engine.

[0013] When 14MPa≤pressure sensor PT<28MPa, and pressure sensor PT3<28MPa, the 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 the electromagnetic switch valve KT1 closes. 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 used to supply the hydrogen internal combustion engine;

[0014] When 6MPa≤pressure sensor PT<14MPa, and pressure sensor PT1>14MPa, the electromagnetic switch valve KT1 opens. At this time, the primary ion liquid-sealed compression cylinder does not work, and the high-pressure gas stored in the first buffer tank is supplied to the secondary ion liquid-sealed compression cylinder. 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 closes. At this time, both the primary and secondary ion liquid-sealed compression cylinders 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 and pressure sensor PT1≤13.5MPa, the electromagnetic switch valve KT1 opens, the first-level ion liquid-sealed compression cylinder works to pressurize the gas, the second-level ion liquid-sealed compression cylinder starts, and the second water bath cooler works until the pressure sensor PT3≥32.5MPa, at which time the electromagnetic switch valve KT1 closes. At this time, both the first-level ion liquid-sealed compression cylinder and the second-level ion liquid-sealed compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is used to supply 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 drive device includes a hydraulic oil tank, which is equipped with an oil pump. One branch of the oil pump is connected to the first-level ion liquid-seal compression cylinder via the electromagnetic switch valve SOV1 and the first integrated hydraulic valve. The first integrated hydraulic valve is equipped with an electromagnetic switch valve KT2 and an electromagnetic bypass valve KT5. The other branch is connected to the second-level ion liquid-seal compression cylinder via the electromagnetic switch valve SOV2 and the second integrated hydraulic valve. The second integrated hydraulic valve is equipped with an electromagnetic switch valve KT3 and an electromagnetic bypass valve KT4.

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

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

[0020] Temperature sensors TT3 and TT4 are provided on the front and rear sides of the second water bath cooler, 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 first-level ion liquid seal compression cylinder via an electronic switch valve and an ion liquid reflux pipeline.

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

[0025] By installing a pressure sensor PT on the gas cylinder, installing a first buffer tank on the pipeline between the first and second ion liquid-sealed compression cylinders, and installing a pressure sensor PT1 on the first buffer tank, the top of the ion liquid separator is connected to the second buffer tank via a pipeline, and the second buffer tank is equipped with a pressure sensor PT3. According to the pressure value changes of pressure sensor PT, pressure sensor PT1, and pressure sensor PT3, the first and second ion liquid-sealed compression cylinders are controlled to start and stop, thereby avoiding continuous operation of the first and second ion liquid-sealed compression cylinders, thereby achieving the purpose of energy conservation and consumption reduction. Similarly, according to the temperature value changes of temperature sensor TT1, temperature sensor TT2, and temperature sensor TT5, the first and second water bath coolers can be controlled to start and stop, thus achieving the purpose of energy conservation 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. First-level ion liquid-sealed compression cylinder, 2. Second-level ion liquid-sealed compression cylinder, 3. Gas storage cylinder, 4. One-way valve, 5. First water bath cooler, 6. First buffer tank, 7. Ionic liquid separator, 8. Second water bath cooler, 9. Electronic switch valve, 10. Ionic liquid reflux pipeline, 11. Second buffer tank, 12. Hydrogen internal combustion engine, 13. Hydraulic oil tank, 14. Oil pump, 15. First integrated hydraulic valve, 16. Second integrated hydraulic valve. Specific implementation method:

[0029] In order to clearly illustrate the technical features of this 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 includes 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 respectively driven by a driving device, an air inlet of the first-stage ion liquid-sealed compression cylinder 1 is connected to a gas cylinder 3 through a pipeline, a pressure sensor PT is provided on the gas cylinder 3, and the gas pressure of the gas cylinder 3 can be detected. An electromagnetic switch valve KT1 and a one-way valve 4 are provided on the pipeline between the gas cylinder 3 and the first-stage ion liquid-sealed compression cylinder 1;

[0031] The air outlet of the first-level ion liquid-sealed compression cylinder 1 is connected to the air inlet of the second-level 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 first-level ion liquid-sealed compression cylinder 1 and the second-level ion liquid-sealed compression cylinder 2. The first buffer tank 6 is provided with a pressure sensor PT1, which can detect the gas pressure of the first buffer tank 6;

[0032] The gas outlet of the secondary ion liquid seal 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 pressure value changes of the pressure sensor PT, the pressure sensor PT1 and the pressure sensor PT3, the start and stop of the first-level ion liquid seal compression cylinder 1 and the second-level ion liquid seal compression cylinder 2 are controlled to achieve energy saving and consumption reduction.

[0034] The drive device includes a hydraulic oil tank 13, on which an oil pump 14 is provided. One branch of the oil pump 14 is connected to the first-level ion liquid-seal compression cylinder 1 through the electromagnetic switch valve SOV1 and the 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. The other branch is connected to the second-level ion liquid-seal compression cylinder 2 through the electromagnetic switch valve SOV2 and the 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 first-level ion liquid seal compression cylinder, so that the first-level ion liquid seal compression cylinder works; when the solenoid switch valve SOV2 and the solenoid switch valve KT3 are opened, the oil pump can supply hydraulic oil to the second-level ion liquid seal compression cylinder, so that the second-level ion liquid seal compression cylinder works; 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] Temperature sensors TT1 and 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 the water cooling unit COOL1 .

[0037] Temperature sensors TT3 and TT4 are provided on the front and rear sides of the second water bath cooler 8 , 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 first-level ion liquid seal compression cylinder 1 through the electronic switch valve 9 and the ion liquid reflux pipeline 10.

[0041] Working principle:

[0042] During operation, the hydrogen in the gas cylinder 3 first enters the primary ion liquid-sealed compression cylinder 1 through the electromagnetic switch valve KT1 and the one-way valve 4, and then enters the first buffer tank 6 through the first water bath cooler 5 after being pressurized in the primary ion liquid-sealed compression cylinder 1, 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 and 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 return pipeline 10, and the gas enters the second buffer tank 11 through the pipeline, and then is 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 is ≥ 28 MPa and the pressure sensor PT3 is ≥ 32.5 MPa, 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, 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 used to supply the hydrogen internal combustion engine.

[0045] Case (2): When the pressure sensor PT is greater than or equal to 28 MPa and the pressure sensor PT3 is less than or equal to 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. Under the above conditions, when the temperature sensor TT5 is greater than 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 and 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 seal compression cylinder and the second-stage ion liquid seal compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is used to supply the hydrogen internal combustion engine.

[0047] Case (4): when 14MPa≤pressure sensor PT<28MPa and pressure sensor PT3<28MPa, the electromagnetic switch valve KT1 opens, the electromagnetic switch valve SOV1 closes, the electromagnetic switch valve SOV2 opens, the electromagnetic 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, 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 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, and pressure sensor PT1>14MPa, the electromagnetic switch valve KT1 opens, the electromagnetic switch valve SOV1 closes, the electromagnetic switch valve SOV2 opens, the electromagnetic bypass valve KT4 closes, the first-level ion liquid seal compression cylinder does not work, and relies on the high-pressure gas stored in the first buffer tank to supply to the second-level ion liquid seal compression cylinder, 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 and the second-level ion liquid seal compression cylinder both stop working, and rely on the high-pressure gas stored in the second buffer tank to supply 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] 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, and 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 is ≥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 is ≥40°C, the first water bath cooler works, otherwise the first water bath cooler does not work; when the temperature sensor TT2 is ≥40°C or the temperature sensor TT5 is greater than 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 replacement, improvement or transformation made to the implementation manner of the present invention falls within the protection scope of the present invention.

[0052] Any matters not described in detail in the present invention are well-known technologies to those skilled in the art.

Claims

1. A two-stage ionic liquid seal gas compressor control method, characterized in that: It includes a first-level ion liquid-sealed compression cylinder and a second-level ion liquid-sealed compression cylinder, which are driven by a driving device respectively. The air inlet of the first-level ion liquid-sealed compression cylinder is connected to the gas storage cylinder through a pipeline. The gas storage cylinder is provided with a pressure sensor PT. The pipeline between the gas storage cylinder and the first-level ion liquid-sealed compression cylinder is provided with an electromagnetic switch valve KT1 and a one-way valve; The air outlet of the first-stage ion liquid-sealed compression cylinder is connected to the air inlet of the second-stage ion liquid-sealed compression cylinder through a pipeline. A first water bath cooler and a first buffer tank are provided on the pipeline between the first-stage ion liquid-sealed compression cylinder and the second-stage ion liquid-sealed compression cylinder. The first buffer tank is provided with a pressure sensor PT1; The air outlet of the secondary ion liquid seal compression cylinder is connected to the second water bath cooler through a pipeline, and the second water bath cooler is further connected to the air inlet of the second buffer tank through a pipeline. The second buffer tank is provided with a pressure sensor PT3, and the air outlet of the second buffer tank is connected to the hydrogen internal combustion engine; According to the pressure value changes of pressure sensor PT, pressure sensor PT1 and pressure sensor PT3, the start and stop of the first-level ion liquid seal compression cylinder and the second-level ion liquid seal compression cylinder are controlled to achieve energy saving and consumption reduction; Set the pressure values ​​of pressure sensor PT, pressure sensor PT1 and pressure sensor PT3 to P0, P1 and P3, When P0≥14MPa and P3≥32.5MPa, the electromagnetic switch valve KT1 is closed. 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 used to supply the hydrogen internal combustion engine. When P0≥28MPa and P3<28MPa, the electromagnetic switch valve KT1 opens. 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 gas cylinder is supplied to the hydrogen internal combustion engine. When 14MPa≤P0<28MPa and P3<28MPa, the electromagnetic switch valve KT1 opens, and the secondary ion liquid seal compression cylinder starts, and the second water bath cooler works. When P3≥32.5MPa, 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. The high-pressure gas stored in the second buffer tank is used to supply the hydrogen internal combustion engine. When 6MPa≤P0<14MPa and P1>14MPa, the electromagnetic switch valve KT1 is opened. At this time, the first-level ion liquid-sealed compression cylinder does not work, and the high-pressure gas stored in the first buffer tank is used to supply the second-level ion liquid-sealed compression cylinder. The second-level ion liquid-sealed compression cylinder starts, and the second water bath cooler works. When P3≥32.5MPa, the electromagnetic switch valve KT1 is closed. At this time, both the first-level ion liquid-sealed compression cylinder and the second-level ion liquid-sealed compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is used to supply the hydrogen internal combustion engine. When 6MPa≤P0<14MPa and P1≤13.5MPa, the electromagnetic switch valve KT1 opens, the first-level ion liquid-sealed compression cylinder works to pressurize the gas, the second-level ion liquid-sealed compression cylinder starts, and the second water bath cooler works until P3≥32.5MPa, at which time the electromagnetic switch valve KT1 closes. At this time, both the first-level ion liquid-sealed compression cylinder and the second-level ion liquid-sealed compression cylinder stop working, and the high-pressure gas stored in the second buffer tank is used to supply the hydrogen internal combustion engine; When P0 is less than 6MPa, the electromagnetic switch valve KT1 is closed and a new gas cylinder needs to be replaced.

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

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

4. The two-stage ionic liquid seal gas compressor control method according to claim 1, characterized in that: Temperature sensors TT1 and TT2 are provided on the front and rear sides of the first water bath cooler, and the first water bath cooler is connected to the water cooling unit COOL1.

5. The two-stage ionic liquid seal gas compressor control method according to claim 1, characterized in that: Temperature sensors TT3 and TT4 are provided on the front and rear sides of the second water bath cooler, and the second water bath cooler is connected to the water cooling unit COOL1.

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

7. The two-stage ionic liquid seal gas compressor control method according to claim 2, characterized in that: The hydraulic oil tank is provided with a temperature sensor TT6.

8. The two-stage ionic 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 first-level ion liquid seal compression cylinder via an electronic switch valve and an ion liquid reflux pipeline.

Images