Compression air cylinder for ionic liquid leakage internal circulation

Abstract

The utility model relates to the technical field of ionic liquid cylinders, in particular to a compression cylinder for internal circulation of leaked ionic liquid. Comprising a cylinder body, a piston is arranged in the cylinder body, a gas compression cavity is formed between the piston and a front end cover, ionic liquid is arranged at the top of the piston, an isolation cavity is formed between the piston and the cylinder body, a plurality of sealing rings are arranged between the piston and the cylinder body on the upper side and the lower side of the isolation cavity for sealing, and a pressure sensor is arranged on the cylinder body on the side portion of the isolation cavity. An ionic liquid discharge channel is arranged in the piston at the bottom of the isolation cavity, a one-way valve is installed in the ionic liquid discharge channel, and the isolation cavity is communicated with a cavity between the piston and the rear end cover through the ionic liquid discharge channel. When the piston moves downwards, the pressure of the hydraulic cavity is reduced, and the ionic liquid in the isolation cavity enters the hydraulic cavity through the ionic liquid discharge channel and the one-way valve and is discharged into an oil tank along with hydraulic oil; when the pressure sensor detects that the pressure of the isolation cavity is abnormal, a signal is fed back to the controller, a worker can stop the machine in time for maintenance, and equipment safety is ensured.

Description

Technical field:

[0001] The utility model relates to the technical field of ionic liquid cylinders, in particular to a compression cylinder with internal circulation of ionic liquid leakage. Background technology:

[0002] Currently, ion liquid-sealed compression cylinders are a new type of equipment used to boost gas pressure in hydrogen refueling stations. Patent application CN116044712A discloses an ionic liquid compressor that injects ionic liquid into the compression chamber of the cylinder to cool and lubricate the piston and improve the seal between the piston and cylinder. However, in actual operation, due to the high gas pressure within the compression chamber, the ionic liquid in the compression chamber inevitably leaks outward from between the piston and cylinder over long periods of operation. This lack of ionic liquid can lead to a series of problems, including dry grinding between the piston and cylinder, increased gas temperature, and decreased gas pressure. This requires timely detection and replenishment of new ionic liquid, but there is currently no effective solution.

[0003] In summary, the problem of leakage detection and timely replenishment of ionic liquid in ionic liquid cylinders has become a technical problem that needs to be solved urgently in the industry. Utility model content:

[0004] In order to make up for the deficiencies of the prior art, the utility model provides a compression cylinder with internal circulation of ionic liquid leakage, which solves the problems of dry grinding between the piston and the cylinder, increased gas temperature and reduced gas pressure caused by the lack of ionic liquid in the past.

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

[0006] A compressed gas cylinder for internal circulation of ionic liquid leakage comprises a cylinder body, a front end cover and a rear end cover are provided at both ends of the cylinder body, an intake valve and an exhaust valve are provided on the front end cover, a piston is provided in the cylinder body, a gas compression chamber is formed between the piston and the front end cover, an ionic liquid is provided on the top of the piston, and the ionic liquid is used to cool, lubricate and seal the piston and the cylinder body, an isolation chamber is provided between the piston and the cylinder body, a plurality of sealing rings are provided between the piston and the cylinder body on the upper and lower sides of the isolation chamber for sealing, a pressure sensor is provided on the cylinder body on the side of the isolation chamber, an ionic liquid discharge channel is provided in the piston at the bottom of the isolation chamber, a one-way valve is installed in the ionic liquid discharge channel, and the ionic liquid discharge channel connects the isolation chamber with the cavity between the piston and the rear end cover.

[0007] An ionic liquid inlet is provided on a side wall of the cylinder body on one side of the gas compression chamber.

[0008] The pressure sensor is used to detect the pressure signal in the isolation cavity and send it to the controller.

[0009] The cavity between the piston and the rear end cover is a hydraulic cavity, which is used to drive the piston to move up and down. The rear end cover is provided with a hydraulic oil inlet and outlet.

[0010] A plurality of guide rings are arranged between the piston and the cylinder body.

[0011] The utility model adopts the above solution and has the following advantages:

[0012] An isolation chamber is provided between the piston and the cylinder body, an ion liquid discharge channel is provided in the piston at the bottom of the isolation chamber, and a one-way valve is installed in the ion liquid discharge channel. When the ion liquid in the gas compression chamber leaks, it will leak into the isolation chamber, causing the pressure in the isolation chamber to increase. When the piston moves downward, the pressure in the hydraulic chamber decreases, and the ion liquid in the isolation chamber will enter the hydraulic chamber through the ion liquid discharge channel and the one-way valve, and be discharged into the oil tank along with the hydraulic oil. A pressure sensor is provided on the cylinder body on the side of the isolation chamber, and the pressure sensor is used to detect the pressure signal in the isolation chamber and send it to the controller. When the pressure sensor detects that the pressure in the isolation chamber is abnormal, it feeds back the signal to the controller, and the staff can stop the machine for maintenance in time to ensure the safety of the equipment. Description of the drawings:

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] In the figure, 1. cylinder body, 2. front end cover, 3. rear end cover, 4. intake valve, 5. exhaust valve, 6. piston, 7. gas compression chamber, 8. ionic liquid, 9. isolation chamber, 10. sealing ring, 11. pressure sensor, 12. ionic liquid discharge channel, 13. one-way valve, 14. ionic liquid inlet, 15. hydraulic chamber, 16. hydraulic oil inlet and outlet, 17. guide ring. Specific implementation method:

[0015] 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.

[0016] like Figure 1As shown, a compressed gas cylinder with internal circulation of ionic liquid leakage comprises a cylinder body 1, a front end cover 2 and a rear end cover 3 are provided at both ends of the cylinder body 1, an intake valve 4 and an exhaust valve 5 are provided on the front end cover 2, a piston 6 is provided in the cylinder body 1, a gas compression chamber 7 is formed between the piston 6 and the front end cover 2, an ionic liquid 8 is provided on the top of the piston 6, and the ionic liquid 8 is used to cool, lubricate and seal the piston 6 and the cylinder body 1, an isolation chamber 9 is provided between the piston 6 and the cylinder body 1, and a plurality of sealing rings 10 are respectively provided between the piston 6 and the cylinder body 1 on the upper and lower sides of the isolation chamber 9 for sealing to ensure the airtightness of the isolation chamber 9, a pressure sensor 11 is provided on the cylinder body 1 on the side of the isolation chamber 9, an ionic liquid discharge channel 12 is provided in the piston 6 at the bottom of the isolation chamber 9, a one-way valve 13 is installed in the ionic liquid discharge channel 12, and the ionic liquid discharge channel 12 connects the isolation chamber 9 with the cavity between the piston 6 and the rear end cover 3.

[0017] An ionic liquid inlet 14 is provided on the side wall of the cylinder body 1 on one side of the gas compression chamber 7 , through which ionic liquid can be replenished into the gas compression chamber 7 .

[0018] The pressure sensor 11 is used to detect the pressure signal in the isolation chamber 9 and send it to the controller. When the pressure sensor detects that the pressure in the isolation chamber 9 is abnormal, it feeds back the signal to the controller, and the controller sends an alarm signal. The staff can stop the machine for maintenance in time to ensure the safety of the equipment.

[0019] The cavity between the piston 6 and the rear end cover 3 is a hydraulic cavity 15, which is used to drive the piston 6 to move up and down. The rear end cover 3 is provided with a hydraulic oil inlet and outlet 16 to realize hydraulic drive of the piston 6.

[0020] A plurality of guide rings 17 are provided between the piston 6 and the cylinder body 1 to play a guiding role.

[0021] Working principle:

[0022] During operation, hydraulic oil enters and exits hydraulic chamber 15 through hydraulic oil inlet and outlet 16, hydraulically driving piston 6 and causing it to move up and down. As piston 6 moves downward, gas enters gas compression chamber 7 through inlet valve 4. As piston 6 moves upward, the gas in gas compression chamber 7 is compressed and pressurized, then discharged outward through exhaust valve 5, thereby increasing the gas pressure. During the pressurization process, the gas in gas compression chamber 7 can leak into isolation chamber 9 if ionic liquid leaks from gas compression chamber 7, increasing the pressure in isolation chamber 9. When piston 6 moves downward, the pressure in hydraulic chamber 15 decreases, and the ionic liquid in isolation chamber 9 enters hydraulic chamber 15 through ionic liquid discharge channel 12 and one-way valve 13, and is discharged into the oil tank along with the hydraulic oil. Furthermore, when pressure sensor 11 detects an abnormal pressure in isolation chamber 9, it sends a feedback signal to the controller, which issues an alarm, prompting personnel to shut down the machine for maintenance. Ionic liquid 8 can be promptly replenished into gas compression chamber 7 through ionic liquid inlet 14 to ensure equipment safety.

[0023] The above specific implementation methods cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or transformation made to the implementation methods of the present utility model falls within the protection scope of the present utility model.

[0024] Anything not described in detail in the present invention is well known to those skilled in the art.

Claims

1. A compressed gas cylinder with internal circulation of ionic liquid leakage, characterized in that: The utility model comprises a cylinder body, a front end cover and a rear end cover are provided at both ends of the cylinder body, an intake valve and an exhaust valve are provided on the front end cover, a piston is provided in the cylinder body, a gas compression chamber is formed between the piston and the front end cover, an ionic liquid is provided on the top of the piston, and the ionic liquid is used to cool, lubricate and seal the piston and the cylinder body, an isolation chamber is provided between the piston and the cylinder body, and a plurality of sealing rings are provided between the piston and the cylinder body on the upper and lower sides of the isolation chamber for sealing, a pressure sensor is provided on the cylinder body on the side of the isolation chamber, an ionic liquid discharge channel is provided in the piston at the bottom of the isolation chamber, a one-way valve is installed in the ionic liquid discharge channel, and the ionic liquid discharge channel connects the isolation chamber with the cavity between the piston and the rear end cover.

2. The compressed gas cylinder with internal circulation of ionic liquid leakage according to claim 1, characterized in that: An ionic liquid inlet is provided on a side wall of the cylinder body on one side of the gas compression chamber.

3. The compressed gas cylinder with internal circulation of ionic liquid leakage according to claim 1, characterized in that: The pressure sensor is used to detect the pressure signal in the isolation cavity and send it to the controller.

4. The compressed gas cylinder with internal circulation of ionic liquid leakage according to claim 1, characterized in that: The cavity between the piston and the rear end cover is a hydraulic cavity, which is used to drive the piston to move up and down. The rear end cover is provided with a hydraulic oil inlet and outlet.

5. The compressed gas cylinder with internal circulation of ionic liquid leakage according to claim 1, characterized in that: A plurality of guide rings are arranged between the piston and the cylinder body.

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