Vertical ionic liquid seal compression cylinder

Abstract

The utility model relates to the technical field of ionic liquid cylinders, in particular to a vertical ionic liquid seal compression cylinder. Comprising a cylinder body, a front end cover and a rear end cover are arranged at the two ends of the cylinder body, an air inlet valve and an exhaust valve are arranged on the front end cover, a piston is arranged in the cylinder body, a gas compression cavity is formed between the piston and the front end cover, an annular groove is formed in the edge of the top end of the piston, and ionic liquid is arranged in the annular groove and used for cooling, lubricating and sealing the piston and the cylinder body. And an ionic liquid inlet is formed in the side wall of the cylinder body on one side of the gas compression cavity and is connected with an ionic liquid circulating system. The mode that the top of a piston is completely covered with ionic liquid in the past is changed, the using amount of the ionic liquid is greatly reduced, the cost of the whole compression air cylinder is reduced, meanwhile, the ionic liquid circulating system is arranged, the ionic liquid and gas are separated through the gas-liquid separator, part of the ionic liquid exhausted along with the gas can be recycled, and the energy consumption is reduced. Consumption and waste of the ionic liquid are avoided, and the use cost is reduced.

Description

Technical field:

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

[0002] Currently, ionic 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 cylinder's compression chamber to cool and lubricate the piston and improve the seal between the piston and cylinder. With existing ionic liquid cylinders of this type, the ionic liquid in the compression chamber completely covers the top of the piston, requiring a large amount of ionic liquid. This high cost of ionic liquid undoubtedly increases the overall cost of the compression cylinder. Furthermore, some ionic liquid is discharged with the gas. If not promptly recycled, this can lead to excessive consumption and waste of the ionic liquid, significantly increasing the cost of the ionic liquid cylinder.

[0003] In summary, the amount of ionic liquid used in ionic liquid cylinders and the recycling and utilization of ionic liquid have become technical problems that need 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 vertical ion liquid sealed compression cylinder, which solves the problems of large ion liquid consumption and high cost in the previous ion liquid cylinder.

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

[0006] A vertical ionic liquid-sealed compression cylinder 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 annular groove is provided at the top edge of the piston, an ionic liquid is provided in the annular groove, and the ionic liquid is used to cool, lubricate and seal between the piston and the cylinder body, an ionic liquid inlet is provided on the side wall of the cylinder body on one side of the gas compression chamber, and the ionic liquid inlet is connected to the ionic liquid circulation system.

[0007] The ionic liquid circulation system includes a gas-liquid output pipeline connected to an exhaust valve, the gas-liquid output pipeline is connected to a gas-liquid separator, a gas outlet is provided at the top of the gas-liquid separator, the bottom of the gas-liquid separator is connected to one end of the ionic liquid circulation pipeline, a switch valve is provided on the ionic liquid circulation pipeline, the other end of the ionic liquid circulation pipeline is connected to the ionic liquid inlet, and one side of the ionic liquid circulation pipeline is connected to an ionic liquid filling port.

[0008] A water cooling cavity is provided on the outside of the cylinder body, a water inlet is provided at the bottom of the water cooling cavity, and a water outlet is provided at the top of the water cooling cavity.

[0009] A hydraulic chamber is formed between the piston and the rear end cover. The hydraulic chamber 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 sealing rings and guide rings are arranged between the piston and the cylinder body.

[0011] An intake and exhaust passage is provided between the intake valve and the exhaust valve.

[0012] The front end cover and the cylinder body are connected via threads, and a sealing ring is provided between the front end cover and the cylinder body for sealing.

[0013] The utility model adopts the above solution and has the following advantages:

[0014] By opening an annular groove on the top edge of the piston and injecting ionic liquid into the annular groove, while ensuring that the ionic liquid cools, lubricates and seals the piston and the cylinder body, the previous method of completely covering the top of the piston with ionic liquid is changed, which greatly reduces the amount of ionic liquid used and reduces the cost of the entire compression cylinder. At the same time, an ionic liquid circulation system is set up to separate the ionic liquid and gas through a gas-liquid separator. Part of the ionic liquid discharged with the gas can be recycled and reused, avoiding the consumption and waste of ionic liquid and reducing the cost of use. Description of the drawings:

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] 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. annular groove, 9. ionic liquid, 10. ionic liquid inlet, 11. gas-liquid output pipeline, 12. gas-liquid separator, 13. gas outlet, 14. ionic liquid circulation pipeline, 15. switch valve, 16. ionic liquid filling port, 17. water-cooling chamber, 18. water inlet, 19. water outlet, 20. hydraulic chamber, 21. hydraulic oil inlet and outlet, 22. sealing ring, 23. guide ring, 24. intake and exhaust channels. Specific implementation method:

[0017] 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.

[0018] like Figure 1As shown, a vertical ionic liquid-sealed compression cylinder includes 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, and a gas compression chamber 7 is formed between the piston 6 and the front end cover 2. An annular groove 8 is provided on the top edge of the piston 6, and an ionic liquid 9 is provided in the annular groove 8, which greatly reduces the amount of ionic liquid used and reduces the cost of the entire compression cylinder. The ionic liquid 9 is used to cool, lubricate and seal the piston 6 and the cylinder body 1. An ionic liquid inlet 10 is provided on the side wall of the cylinder body 1 on one side of the gas compression chamber 7, and the ionic liquid inlet 10 is connected to the ionic liquid circulation system.

[0019] The ionic liquid circulation system includes a gas-liquid output pipeline 11 connected to the exhaust valve 5, the gas-liquid output pipeline 11 is connected to the gas-liquid separator 12, the top of the gas-liquid separator 12 is provided with a gas outlet 13, the bottom of the gas-liquid separator 12 is connected to one end of the ionic liquid circulation pipeline 14, the ionic liquid circulation pipeline 14 is provided with a switch valve 15, the other end of the ionic liquid circulation pipeline 14 is connected to the ionic liquid inlet 10, and one side of the ionic liquid circulation pipeline 14 is connected to the ionic liquid filling port 16. When the cylinder is operating, piston 6 pressurizes the gas. The pressurized gas carries some ionic liquid with it and is discharged from exhaust valve 5. It then enters gas-liquid separator 12 via gas-liquid output line 11, where the ionic liquid and gas are separated. The separated gas is discharged from gas outlet 13. The separated ionic liquid is then returned to ionic liquid inlet 10 via ionic liquid circulation line 14 and injected into annular groove 8. Because the pressure inside gas-liquid separator 12 is greater than the pressure at ionic liquid inlet 10, the entire ionic liquid circulation system requires no additional power and circulates the ionic liquid using a pressure differential. Staff can also regularly inject new ionic liquid through ionic liquid filling port 16 to replenish the ionic liquid in annular groove 8.

[0020] A water cooling chamber 17 is provided on the outside of the cylinder body 1 , a water inlet 18 is provided at the bottom of the water cooling chamber 17 , and a water outlet 19 is provided at the top of the water cooling chamber 17 , so as to realize circulating water cooling on the outside of the cylinder body 1 .

[0021] A hydraulic chamber 20 is provided between the piston 6 and the rear end cover 3 . The hydraulic chamber 20 is used to drive the piston 6 to move up and down. A hydraulic oil inlet and outlet 21 is provided on the rear end cover 3 to realize hydraulic driving of the piston 6 .

[0022] A plurality of sealing rings 22 and guide rings 23 are provided between the piston 6 and the cylinder body 1 to perform sealing and guiding functions.

[0023] An intake and exhaust passage 24 is provided between the intake valve 4 and the exhaust valve 5 .

[0024] The front end cover 2 is connected to the cylinder body 1 through threads, and a sealing ring is provided between the front end cover 2 and the cylinder body 1 for sealing.

[0025] Working principle:

[0026] During operation, hydraulic oil enters and exits the hydraulic chamber 20 through the hydraulic oil inlet and outlet 21, which can realize the hydraulic drive of the piston 6, causing the piston 6 to move up and down. When the piston 6 moves downward, the gas enters the gas compression chamber 7 through the intake valve 4 and the intake and exhaust channel 24. When the piston 6 moves upward, the gas in the gas compression chamber 7 is compressed and pressurized, and then discharged outward through the intake and exhaust channel 24 and the exhaust valve 5, thereby achieving gas pressurization. During the pressurization process of the gas in the gas compression chamber 7, in addition to the multiple sealing rings 22 between the piston 6 and the cylinder body 1, the ionic liquid 9 in the annular groove 8 can also cool, lubricate and seal the piston 6 and the cylinder body 1, realizing a liquid seal function, which can effectively prevent gas from leaking into the hydraulic chamber 20 through the gap between the piston 6 and the cylinder body 1, thereby improving the compression efficiency of the cylinder.

[0027] 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.

[0028] Anything not described in detail in the present invention is well known to those skilled in the art.

Claims

1. A vertical ionic liquid-sealed compression cylinder, characterized by: The invention 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 annular groove is provided at the top edge of the piston, an ionic liquid is provided in the annular groove, and the ionic liquid is used to cool, lubricate and seal between the piston and the cylinder body, an ionic liquid inlet is provided on the side wall of the cylinder body on one side of the gas compression chamber, and the ionic liquid inlet is connected to the ionic liquid circulation system.

2. The vertical ionic liquid-sealed compression cylinder according to claim 1, characterized in that: The ionic liquid circulation system includes a gas-liquid output pipeline connected to an exhaust valve, the gas-liquid output pipeline is connected to a gas-liquid separator, a gas outlet is provided at the top of the gas-liquid separator, the bottom of the gas-liquid separator is connected to one end of the ionic liquid circulation pipeline, a switch valve is provided on the ionic liquid circulation pipeline, the other end of the ionic liquid circulation pipeline is connected to the ionic liquid inlet, and one side of the ionic liquid circulation pipeline is connected to an ionic liquid filling port.

3. The vertical ionic liquid-sealed compression cylinder according to claim 1, characterized in that: A water cooling cavity is provided on the outside of the cylinder body, a water inlet is provided at the bottom of the water cooling cavity, and a water outlet is provided at the top of the water cooling cavity.

4. The vertical ionic liquid-sealed compression cylinder according to claim 1, characterized in that: A hydraulic chamber is formed between the piston and the rear end cover. The hydraulic chamber 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 vertical ionic liquid-sealed compression cylinder according to claim 1, characterized in that: A plurality of sealing rings and guide rings are arranged between the piston and the cylinder body.

6. The vertical ionic liquid-sealed compression cylinder according to claim 1, characterized in that: An intake and exhaust passage is provided between the intake valve and the exhaust valve.

7. The vertical ionic liquid-sealed compression cylinder according to claim 1, characterized in that: The front end cover and the cylinder body are connected via threads, and a sealing ring is provided between the front end cover and the cylinder body for sealing.

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