A gas pressurization system using a linear motor to directly drive ionic liquid

Abstract

The present invention relates to a gas boosting system that uses a linear motor to directly drive an ionic liquid, and belongs to the field of linear motor and gas compression technology. The present invention uses a linear motor unit as a driving structure, and the left and right sides of the linear motor driving unit are respectively connected to an ionic liquid compression unit, and each ionic liquid compression unit is connected to a gas boosting compression unit. Each gas boosting compression unit is also connected to an external gas source and an external storage device. The ionic liquid in the ionic liquid compression unit realizes the boosting and compression of the gas in the gas boosting compression unit under the driving action of the linear motor driving unit. The external gas source is used to provide the gas to be compressed, and the external storage device is used to store the compressed high-pressure gas. The system described in the present invention has a simple structure, is easy to maintain, has a low operating cost, and has a high compression efficiency. It can also compress the gas to a pressure of more than tens of MPa, and has a good application prospect in the field of gas compression.

Description

Technical Field

[0001] The invention relates to a gas pressurizing system using a linear motor to directly drive an ionic liquid, and belongs to the technical field of linear motors and gas compression. Background Art

[0002] With the development and popularization of hydrogen energy technology and compressed natural gas technology, the demand for high-pressure compression of gaseous fuels such as hydrogen and natural gas is increasing. The performance, reliability and use cost of hydrogen compression equipment determine the hydrogenation capacity and operating cost of hydrogen refueling stations, and are the core equipment of hydrogen refueling stations. Existing hydrogen compressors mainly use piston and diaphragm machines. Among them, the piston machine has a short seal life, the piston cylinder requires frequent maintenance and there is a risk of hydrogen contamination. Although the diaphragm compressor overcomes the main shortcomings of the piston compressor, it also has the problems of low volumetric efficiency, short diaphragm service life, and high replacement cost.

[0003] Ionic liquid compressors use ionic liquids to replace metal pistons to form liquid pistons to compress hydrogen in the cylinder body, reducing the friction between the piston and the cylinder body, and can operate for a long time with less maintenance, lower energy consumption, and ionic liquids are incompatible with hydrogen and will not pollute hydrogen. At present, the existing ionic liquid compressors in the hydrogen energy field, such as Linde's ionic liquid compressors, mainly use hydraulic systems to drive multi-stage pistons to achieve step-by-step compression of hydrogen. A small amount of ionic liquid is filled at the front end of the metal piston in the cylinder body, and hydrogen can be compressed to a maximum of tens of megapascals. Because it uses a hydraulically driven multi-stage piston cylinder, its mechanism and process pipelines are also more complicated, and there are many potential leakage points and high costs, which is not conducive to popularization. Therefore, it is necessary to develop a high-pressure gas boosting system using ionic liquid compression with higher compression efficiency, simpler structure, and lower leakage rate to meet the compression requirements of high-pressure gas fuels in application scenarios such as compressed natural gas and gas stations in the hydrogen energy industry. Summary of the invention

[0004] In view of the shortcomings of the current gas compression system, the present invention provides a gas boosting system that uses a linear motor to directly drive an ionic liquid. The ionic liquid boosting pump structure driven by a linear motor can compress gases such as hydrogen from a low pressure to tens of MPa, and can adjust the pressure of the driving ionic liquid and the compression rate of the gas in real time according to the pressure of the compressed gas to achieve more efficient utilization of energy efficiency. The system has a simple structure, a low leakage rate, is easy to maintain, and has low cost, and has good application prospects in the field of gas compression.

[0005] The objectives of the present invention are achieved through the following technical solutions.

[0006] A gas pressurization system using a linear motor to directly drive an ionic liquid, comprising a linear motor drive unit, an ionic liquid compression unit and a gas pressurization compression unit;

[0007] An ionic liquid compression unit is connected to the left and right sides of the linear motor drive unit respectively, and the linear motor drive unit is used to provide high-pressure liquid pressure to the ionic liquid in the ionic liquid compression unit; each ionic liquid compression unit is connected to a gas boosting and compression unit, and the ionic liquid in the ionic liquid compression unit realizes the boosting and compression of the gas in the gas boosting and compression unit under the driving action of the linear motor drive unit; each gas boosting and compression unit is also connected to an external gas source and an external storage device, the external gas source provides the gas boosting and compression unit with gas to be compressed, and the external storage device is used to store the high-pressure gas compressed by the gas boosting and compression unit.

[0008] Furthermore, the linear motor drive unit includes a mover core, an annular permanent magnet, an annular magnetic steel, a motor housing, a motor end cover, a plunger, an annular stator coil, a stator inner core, a stator outer core, a stator aluminum ring, a mover aluminum ring, a linear motor driver, and a magnetic Hall sensor;

[0009] The motor end cover is machined with a plunger hole;

[0010] The linear motor driver has a current closed-loop control function;

[0011] The two ends of the motor housing are connected to the two motor end covers in a one-to-one correspondence; the annular magnetic steel is arranged in sequence on the inner wall of the motor housing along the axial direction; the annular permanent magnet is arranged in sequence on the mover core along the axial direction to form a radial magnetic field (that is, the direction of the magnetic field is distributed radially), and a mover aluminum ring is provided between two adjacent annular permanent magnets, and the radial magnetic fields of two adjacent annular permanent magnets are in opposite directions; the annular stator coil is sleeved between the stator inner core and the stator outer core and the three form a coil unit, and multiple coil units are arranged in sequence on the inner wall of the motor housing along the axial direction and are located on the annular magnetic steel, and a stator aluminum ring is provided between two adjacent coil units, and each coil unit is connected to a wire, one end of the wire is connected to the annular stator coil in the coil unit, and the wire passes through the motor housing. The other end of the wire is connected to a linear motor driver located outside the motor housing, and each group of coil units is independently powered by the linear motor driver; a magnetic Hall sensor is installed on the inner surface of each stator inner core to determine the relative position of the moving or stationary mover and the stator; the magnetic Hall sensor is electrically connected to the linear motor driver, and the linear motor driver controls the power supply state of each coil unit (such as forward power supply, power off or reverse power supply state) according to the signal fed back by the magnetic Hall sensor to control the left and right reciprocating motion state of the linear motor; a plunger is connected to each end of the mover core, each plunger passes through the plunger hole on the corresponding motor end cover, and the linear motor drive unit compresses the ionic liquid in the ionic liquid compression unit through the plunger.

[0012] The linear motor drive unit drives the movable iron core therein to reciprocate under the drag of electromagnetic force, thereby pushing the plungers on both sides thereof to reciprocate in the ionic liquid compression cylinder of the ionic liquid compression unit, and then compressing the ionic liquid in the ionic liquid compression unit so that it enters the gas compression cylinder of the gas boost compression unit to complete the boost compression of the gas.

[0013] Furthermore, a plurality of cooling medium flow channels are machined axially inside the motor housing, and the plurality of cooling medium flow channels are connected in series. The introduction of cooling medium into the cooling medium flow channels can remove the heat generated by the coil during operation of the linear motor.

[0014] Furthermore, there is a dynamic seal between the plunger and the inner wall of the ionic liquid compression cylinder of the ionic liquid compression unit, and more preferably, three piston rings are used for the dynamic seal.

[0015] Furthermore, a pressure sensor I is installed on the pipeline connecting the gas boosting and compression unit with the external gas source, and a pressure sensor II is installed on the pipeline connecting the gas boosting and compression unit with the external storage device. Both pressure sensor I and pressure sensor II are electrically connected to the linear motor driver, and the linear motor driver adjusts the current value of each coil unit according to the feedback signals of the two pressure sensors.

[0016] Furthermore, the materials of the mover aluminum ring and the stator aluminum ring are both antimagnetic aluminum alloy, which plays an antimagnetic role; the materials of the mover iron core, the stator inner iron core and the stator outer iron core are all magnetically conductive steel, which plays a magnetic conductive role. The magnetic field of the annular permanent magnet passes through the annular stator coil radially through the magnetic conductivity of the mover iron core and the stator inner iron core. During the operation of the linear motor, the direction of the current passing through the annular stator coil is completely perpendicular to the direction of the magnetic field passing through it, generating an electromagnetic drag force along the axial direction of the linear motor.

[0017] Further, the ionic liquid compression unit includes an ionic liquid compression cylinder, an ionic liquid, and a compression cylinder end cover;

[0018] The compression cylinder end cover is processed with ionic liquid inlet and outlet holes;

[0019] One end of the ionic liquid compression cylinder is connected to the linear motor drive unit, and the ionic liquid in the ionic liquid compression cylinder is compressed by the linear motor drive unit. Specifically, one end of the ionic liquid compression cylinder is connected to the motor end cover of the linear motor drive unit, and the plunger in the linear motor drive unit passes through the plunger hole on the motor end cover and is dynamically sealed with the inner wall of the ionic liquid compression cylinder, and the reciprocating compression of the ionic liquid is achieved by the reciprocating motion of the plunger in the ionic liquid compression cylinder; the other end of the ionic liquid compression cylinder is equipped with a compression cylinder end cover, and the ionic liquid inlet and outlet holes on the compression cylinder end cover are connected to the gas boosting and compression unit through a pipeline, specifically connected to the ionic liquid inlet and outlet of the end cover II in the gas boosting and compression unit, so that the compressed ionic liquid enters the gas compression cylinder and the internal gas is boosted and compressed.

[0020] Furthermore, an ion liquid recovery hole is processed at one end of the ionic liquid compression cylinder connected to the gas boost compression unit (or close to the compression cylinder end cover) to prevent trace ionic liquid from leaking through the sealing ring of the plunger in the ionic liquid compression cylinder into the linear motor drive unit during the compression process. The leaked ionic liquid can flow out of the ionic liquid compression cylinder and be collected through the ion liquid recovery hole.

[0021] Further, the gas boosting and compression unit comprises a gas compression cylinder, an end cover I, an end cover II and a long bolt;

[0022] An air inlet and an air outlet are processed on the end surface of the end cover I, and valves are installed on the air inlet and the air outlet;

[0023] The end surface of the end cap II is processed with an inlet and outlet for ionic liquid;

[0024] One end of the gas compression cylinder is connected to the end cover I, and the other end of the gas compression cylinder is connected to the end cover II, and the end covers I and II are also connected by long bolts; the air inlet on the end cover I is connected to the external gas source through a pipeline, and the air outlet on the end cover I is connected to the external storage device through a pipeline; the ionic liquid inlet and outlet on the end cover II are connected to the ionic liquid compression unit through a pipeline. In the working process, the ionic liquid enters and exits the gas compression cylinder under the reciprocating drive of the plunger, and accordingly, the ionic liquid liquid level moves up and down in the gas compression cylinder, playing the role of a liquid piston, and the gas entering the gas compression cylinder from the air inlet is compressed by the ionic liquid and then discharged from the gas compression cylinder through the air outlet.

[0025] Furthermore, a heat sink is installed on the outer surface of the gas compression cylinder to dissipate heat and cool the gas and the ionic liquid during the gas pressurization and compression process.

[0026] Beneficial effects:

[0027] (1) The present invention uses a linear motor as a booster pump structure to drive the ionic liquid, which has a simple structure, low leakage rate, easy maintenance, low operating cost, and can compress the gas to a pressure of more than tens of MPa, meeting the high-pressure compression requirements of the gas.

[0028] (2) The system described in the present invention makes full use of the reciprocating motion of the linear motor to drive the ionic liquid in the two ion compression units to be alternately pressed into and sucked out of the two gas boost compression units, so that the ionic liquid acts as a liquid piston to compress the gas, greatly improving the compression efficiency.

[0029] (3) The system described in the present invention can also adjust the pressure of the driving ionic liquid and the compression rate of the gas in real time according to the pressure of the compressed gas to achieve more efficient utilization of energy efficiency.

[0030] (4) The present invention designs an ionic liquid recovery hole on the ionic liquid compression cylinder, which can prevent a trace amount of ionic liquid from leaking through the sealing ring of the plunger in the ionic liquid compression cylinder during the compression process and flowing into the interior of the linear motor drive unit.

[0031] (5) The present invention processes the cooling medium flow channel on the motor housing and designs the heat sink on the outside of the gas compression cylinder in order to timely cool down the linear motor and the gas boost compression unit during operation, ensure stable operation, and improve operational safety.

[0032] (6) The system described in the present invention can not only meet the compression requirements of high-pressure gas fuels in application scenarios such as compressed natural gas and gas stations in the hydrogen energy industry, but can also be used for high-pressure compression of inert gases such as nitrogen and helium, and has good application prospects in the field of gas compression. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of the gas pressurization system in Example 1 that uses a linear motor to directly drive the ionic liquid.

[0034] Figure 2 Schematic diagram of the internal structure of the linear motor drive unit and the ionic liquid compression unit in Example 1.

[0035] Figure 3 Schematic diagram of the specific structure of the stator and mover of the linear motor drive unit in Example 1.

[0036] Figure 4 This is a schematic diagram of the structure of the gas boosting and compression unit in Example 1.

[0037] Among them, a1-linear motor drive unit, a2-ionic liquid compression unit, a3-gas boost compression unit, a4-inlet pipeline, a5-outlet pipeline, a6-flow channel connecting hole, b1-motor housing, b2-motor end cover, b3-moving core, b4-annular permanent magnet, b5-plunger, b6-piston ring, b7-conducting wire, b8-stator outer core, b9-stator inner core, b10-annular magnetic steel, b11-annular stator coil, b12-statator aluminum ring, b13-moving aluminum ring, c1-ionic liquid compression cylinder, c2-compression cylinder end cover, d1-end cover II, d2-long bolt, d3-end cover I, d4-gas interface plate, d5-check valve, d6-gas compression cylinder. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0039] Example 1

[0040] A gas pressurization system using a linear motor to directly drive an ionic liquid comprises a linear motor drive unit a1, an ionic liquid compression unit a2 and a gas pressurization compression unit a3, such as Figure 1 As shown, the left and right sides of the linear motor drive unit a1 are respectively connected to an ion liquid compression unit a2, and the linear motor drive unit a1 is used to provide high-pressure liquid pressure to the ionic liquid in the ionic liquid compression unit a2; each ionic liquid compression unit a2 is connected to a gas boosting and compression unit a3, and the ionic liquid in the ionic liquid compression unit a2 realizes boosting and compression of the gas in the gas boosting and compression unit a3 under the driving action of the linear motor drive unit a1; each gas boosting and compression unit a3 is also connected to an external gas source and an external storage device, and the external gas source provides the gas boosting and compression unit a3 with gas to be compressed, and the external storage device is used to store the high-pressure gas compressed by the gas boosting and compression unit a3;

[0041] like Figure 2 and Figure 3As shown, the linear motor drive unit a1 includes a mover core b3, an annular permanent magnet b4, an annular magnetic steel 410, a motor housing b1, a motor end cover b2, a plunger b5, an annular stator coil b11, a stator inner core b9, a stator outer core b8, a stator aluminum ring b12, a mover aluminum ring b13, a linear motor driver and a magnetic Hall sensor; wherein the mover aluminum ring b13 and the stator aluminum ring b12 are both made of anti-magnetic aluminum alloy, the mover core b3, the stator inner core b9 and the stator outer core b8 are all made of magnetically conductive steel, a plunger hole is machined on the motor end cover b2, a plurality of cooling medium flow channels are machined along the axial direction inside the motor housing b1, a flow channel connecting hole a6 is machined on the motor housing b1 to realize series connection between the plurality of cooling medium flow channels, and the linear motor driver has a current closed-loop control function;

[0042] like Figure 2 As shown, the ionic liquid compression unit a2 includes an ionic liquid compression cylinder c1, an ionic liquid, and a compression cylinder end cover c2; wherein, the compression cylinder end cover c2 is processed with an ionic liquid inlet and outlet hole, and an ionic liquid recovery hole is processed at one end of the ionic liquid compression cylinder c1 close to the compression cylinder end cover c2, so that the leaked trace ionic liquid flows out of the ionic liquid compression cylinder c1 and is recovered, so as to prevent the ionic liquid from flowing into the linear motor drive unit a1;

[0043] like Figure 4 As shown, the gas boosting and compression unit a3 includes a gas compression cylinder d6, an end cover Ⅰd3, a gas interface plate d4, a one-way valve d5, an end cover Ⅱd1 and a long bolt d2; wherein, an air inlet and an air outlet are processed on the end surface of the end cover Ⅰd3, an ionic liquid inlet and outlet are processed on the end surface of the end cover Ⅱd1, and a heat sink is installed on the outer surface of the gas compression cylinder d6 for heat dissipation and cooling of the gas and the ionic liquid during the gas boosting and compression process;

[0044] Combination Figures 1 to 4The assembly relationship between the components in the system is as follows: the motor housing b1 is a hollow cylinder with two open ends, and the two ends of the motor housing b1 are connected to the two motor end covers b2 in a one-to-one correspondence; the annular magnetic steels b10 are arranged in sequence on the inner wall of the motor housing b1 along the axial direction; the annular permanent magnets b4 are arranged in sequence on the mover core b3 along the axial direction to form a radial magnetic field (that is, the magnetic field direction is distributed radially), and a mover aluminum ring b13 is provided between two adjacent annular permanent magnets b4, and the radial magnetic fields of the two adjacent annular permanent magnets b4 are in opposite directions; the annular stator coil b11 is sleeved between the stator inner core b9 and the stator outer core b8, and the three form a coil unit, multiple The coil units are arranged in sequence along the axial direction on the inner wall of the motor housing b1 and are located on the annular magnetic steel b10. A stator aluminum ring b12 is set between two adjacent coil units. Each coil unit is connected to a wire b7. One end of the wire b7 is connected to the annular stator coil b11 in the coil unit. The wire b7 passes through the motor housing b1. The other end of the wire b7 is connected to the linear motor driver located outside the motor housing b1. Each group of coil units is independently powered by the linear motor driver. A magnetic Hall sensor is installed on the inner surface of each stator inner core b9 to determine the relative position of the moving or stationary mover and the stator. The magnetic Hall sensor is electrically connected to the linear motor driver. The linear motor driver controls the power supply state of each coil unit (such as forward power supply, power off or reverse power supply state) according to the signal fed back by the magnetic Hall sensor to control the left and right reciprocating motion state of the linear motor; a plunger b5 is connected to each end of the mover core b3, each plunger b5 passes through the plunger hole on the corresponding motor end cover b2 and enters the interior of the ionic liquid compression cylinder c1, and three piston rings b6 are used between the plunger b5 and the inner wall of the ionic liquid compression cylinder c1 for dynamic sealing; the ionic liquid compression cylinder c1 is a hollow cylinder with two open ends, one end of the ionic liquid compression cylinder c1 is connected to the motor end cover b2, and the other end of the ionic liquid compression cylinder c1 A compression cylinder end cover c2 is installed, and the ionic liquid inlet and outlet holes on the compression cylinder end cover c2 are connected to the ionic liquid inlet and outlet of the end cover Ⅱd1 in the gas boost compression unit a3 through a liquid pipeline; one end of the gas compression cylinder d6 is connected to the end cover Ⅰd3, and the other end of the gas compression cylinder d6 is connected to the end cover Ⅱd1, and the end cover Ⅰd3 and the end cover Ⅱd1 are also connected by a long bolt d2; two one-way valves d5 are pressed to the corresponding positions of the air inlet and air outlet in the cylinder cover Ⅰd3 through the gas interface plate d4, the air inlet on the end cover Ⅰd3 is connected to the external gas source through the air inlet pipeline a4, and the air outlet on the end cover Ⅰd3 is connected to the external storage device through the air outlet pipeline a5.

[0045] During the operation of the system, the reciprocating motion of the linear motor pushes the plungers b5 on both sides thereof to reciprocate in the ionic liquid compression cylinder c1, so that the ionic liquid can enter and exit the gas compression cylinder d6. The ionic liquid entering the gas compression cylinder d6 acts as a liquid piston to pressurize and compress the gas. At the same time, during the operation of the system, the cooling medium is passed into the cooling medium flow channel of the motor housing b1 for circulation, so that the heat generated by the coil during the operation of the linear motor can be taken out.

[0046] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas pressurization system using a linear motor to directly drive an ionic liquid, characterized in that: It includes a linear motor drive unit, an ionic liquid compression unit and a gas boost compression unit; An ionic liquid compression unit is connected to the left and right sides of the linear motor drive unit respectively, and the linear motor drive unit is used to provide high-pressure liquid pressure to the ionic liquid in the ionic liquid compression unit; each ionic liquid compression unit is connected to a gas boosting and compression unit, and the ionic liquid in the ionic liquid compression unit realizes boosting and compression of the gas in the gas boosting and compression unit under the driving action of the linear motor drive unit; each gas boosting and compression unit is also connected to an external gas source and an external storage device, the external gas source provides the gas boosting and compression unit with gas to be compressed, and the external storage device is used to store the high-pressure gas compressed by the gas boosting and compression unit; The ionic liquid compression unit comprises an ionic liquid compression cylinder, an ionic liquid and a compression cylinder end cover; The compression cylinder end cover is machined with ionic liquid inlet and outlet holes; One end of the ionic liquid compression cylinder is connected to the linear motor drive unit, and the ionic liquid in the ionic liquid compression cylinder is compressed by the linear motor drive unit; the other end of the ionic liquid compression cylinder is installed with a compression cylinder end cover, and the ionic liquid inlet and outlet holes on the compression cylinder end cover are connected to the gas boost compression unit through a pipeline; One end of the ionic liquid compression cylinder connected to the gas boost compression unit is processed with an ionic liquid recovery hole.

2. A gas pressurization system using a linear motor to directly drive an ionic liquid according to claim 1, characterized in that: The linear motor drive unit includes a mover core, an annular permanent magnet, an annular magnetic steel, a motor housing, a motor end cover, a plunger, an annular stator coil, a stator inner core, a stator outer core, a stator aluminum ring, a mover aluminum ring, a linear motor driver and a magnetic Hall sensor; The motor end cover is machined with a plunger hole; The linear motor driver has a current closed-loop control function; The two ends of the motor housing are connected to the two motor end covers in a one-to-one correspondence; the annular magnetic steel is arranged in sequence on the inner wall of the motor housing along the axial direction; the annular permanent magnet is arranged in sequence on the mover iron core along the axial direction, a mover aluminum ring is provided between two adjacent annular permanent magnets, and the radial magnetic fields of the two adjacent annular permanent magnets are in opposite directions; the annular stator coil is sleeved between the stator inner iron core and the stator outer iron core and the three form a coil unit, multiple coil units are arranged in sequence on the inner wall of the motor housing along the axial direction and are located on the annular magnetic steel, a stator aluminum ring is provided between two adjacent coil units, each coil unit is connected to a wire, one end of the wire is connected to the annular stator coil in the coil unit The wire passes through the motor housing, and the other end of the wire is connected to the linear motor driver located outside the motor housing, and each group of coil units is independently powered by the linear motor driver; a magnetic Hall sensor is installed on the inner surface of each stator inner core, and the magnetic Hall sensor is electrically connected to the linear motor driver. The linear motor driver controls the power supply state of each coil unit according to the signal fed back by the magnetic Hall sensor to control the left and right reciprocating motion state of the linear motor; a plunger is connected to each end of the mover core, each plunger passes through the plunger hole on the corresponding motor end cover, and the linear motor drive unit compresses the ionic liquid in the ionic liquid compression unit through the plunger.

3. The gas pressurization system using a linear motor to directly drive an ionic liquid according to claim 2, characterized in that: A plurality of cooling medium flow channels are processed in the axial direction inside the motor housing, and the plurality of cooling medium flow channels are connected in series.

4. The gas pressurization system using a linear motor to directly drive an ionic liquid according to claim 2, characterized in that: A pressure sensor I is installed on the pipeline connecting the gas booster compression unit with the external gas source, and a pressure sensor II is installed on the pipeline connecting the gas booster compression unit with the external storage device. Both pressure sensor I and pressure sensor II are electrically connected to the linear motor driver, and the linear motor driver adjusts the current value of each coil unit according to the feedback signals of the two pressure sensors.

5. The gas pressurization system using a linear motor to directly drive an ionic liquid according to claim 2, characterized in that: The materials of the mover aluminum ring and the stator aluminum ring are both anti-magnetic aluminum alloy, and the materials of the mover iron core, the stator inner iron core and the stator outer iron core are all magnetically conductive steel.

6. The gas pressurization system using a linear motor to directly drive an ionic liquid according to claim 1, characterized in that: Three piston rings are used for dynamic sealing between the plunger and the inner wall of the ionic liquid compression cylinder.

7. A gas pressurizing system using a linear motor to directly drive an ionic liquid according to any one of claims 1 to 5, characterized in that: The gas booster compression unit comprises a gas compression cylinder, an end cover I, an end cover II and long bolts; An air inlet and an air outlet are processed on the end surface of the end cover I, and valves are installed on the air inlet and the air outlet; The end surface of the end cap II is processed with an inlet and outlet for ionic liquid; One end of the gas compression cylinder is connected to end cover I, and the other end of the gas compression cylinder is connected to end cover II, and end cover I and end cover II are also connected by long bolts; the air inlet on end cover I is connected to an external gas source through a pipeline, and the air outlet on end cover I is connected to an external storage device through a pipeline; the ionic liquid inlet and outlet on end cover II are connected to an ionic liquid compression unit through a pipeline, and the ionic liquid in the ionic liquid compression unit enters and exits the gas compression cylinder through the pipeline.

8. The gas pressurization system using a linear motor to directly drive an ionic liquid according to claim 7, characterized in that: Heat sinks are installed on the outer surface of the gas compression cylinder.

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