Inclination and air leakage prevention structure of compression air cylinder

Abstract

The utility model relates to the technical field of ionic liquid cylinders, in particular to an inclined air leakage prevention structure of a compression cylinder. 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 ionic liquid storage cavity is formed between the piston and the cylinder body, and sealing rings are arranged between the piston located on the upper side and the lower side of the ionic liquid storage cavity and the cylinder body for sealing. The ionic liquid storage cavity is communicated with ionic liquid on the top of the piston through a plurality of ionic liquid channels arranged in the piston, and one-way valves are arranged in the ionic liquid channels. The ionic liquid in the ionic liquid storage cavity has a certain pressure and plays a liquid sealing role between the piston and the cylinder body, and when the ionic liquid cylinder works in an inclined state, although the ionic liquid at the top of the piston is concentrated to the side with the relatively low position, the other side with the relatively high position is exposed, and no ionic liquid exists. And the ionic liquid in the ionic liquid storage cavity also plays a liquid sealing role, so that gas leakage between the piston and the cylinder body is avoided.

Description

Technical field:

[0001] The utility model relates to the technical field of ionic liquid cylinders, in particular to an anti-tilting and air leakage structure of a compression cylinder. Background technology:

[0002] Currently, ion liquid-sealed compression cylinders are a new type of equipment used to pressurize gas 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. However, in practice, due to the unstable working environment of the ionic liquid cylinder, cylinder tilt is inevitable. When the ionic liquid cylinder is operating in a tilted state, the ionic liquid on the top of the piston will concentrate on the relatively low side, while the other side, which is relatively high, will be free of ionic liquid. This will result in the relatively high end surface of the piston being exposed. Without the ionic liquid seal, gas will leak between the piston and the cylinder body. Currently, there is no effective solution.

[0003] In summary, the air leakage problem of ionic liquid cylinders when working in a tilted state has become a technical problem that urgently needs to be solved in the industry. Utility model content:

[0004] In order to make up for the deficiencies of the prior art, the utility model provides an anti-tilting and air leakage structure for a compression cylinder, which solves the problem that when the ionic liquid cylinder is working in a tilted state, the ionic liquid on the top of the piston will be concentrated on one side and the other side will have no ionic liquid seal, resulting in air leakage.

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

[0006] A structure for preventing tilting and air leakage of a 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 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 ionic liquid storage chamber is provided between the piston and the cylinder body, sealing rings are respectively provided between the piston and the cylinder body on the upper and lower sides of the ionic liquid storage chamber for sealing, the ionic liquid storage chamber is connected to the ionic liquid on the top of the piston through a plurality of ionic liquid channels provided in the piston, and a one-way valve is provided in the ionic liquid channel.

[0007] The ionic liquid storage chamber is annularly arranged on the outer surface of the piston.

[0008] 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.

[0009] A plurality of sealing rings and guide rings are arranged between the piston and the cylinder body.

[0010] An ionic liquid inlet is provided on a side wall of the cylinder body on one side of the gas compression chamber.

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

[0012] An ion liquid storage chamber is provided between the piston and the cylinder body, and the ion liquid storage chamber is connected to the ion liquid on the top of the piston through several ion liquid channels provided in the piston. A one-way valve is provided in the ion liquid channel. When the piston moves upward, the pressure in the gas compression chamber increases, and the ion liquid on the top of the piston can enter the ion liquid storage chamber through the one-way valve and the ion liquid channel for storage. The ion liquid in the ion liquid storage chamber has a certain pressure and can play a liquid sealing role between the piston and the cylinder body. When the ion liquid cylinder is working in an inclined state, although the ion liquid on the top of the piston will be concentrated on the relatively lower side, resulting in the other side at a relatively higher position being exposed without ion liquid, the ion liquid in the ion liquid storage chamber will also play a liquid sealing role to prevent gas leakage from between the piston and the cylinder body. Description of the drawings:

[0013] Figure 1 It is a structural schematic diagram of the utility model in a vertical state.

[0014] Figure 2 It is a structural schematic diagram of the utility model in an inclined state.

[0015] 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. ionic liquid storage chamber, 10. sealing ring, 11. ionic liquid channel, 12. one-way valve, 13. hydraulic chamber, 14. hydraulic oil inlet and outlet, 15. sealing ring, 16. guide ring, 17. ionic liquid inlet. Specific implementation method:

[0016] 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.

[0017] like Figure 1-2As shown, a structure for preventing tilting and air leakage of a 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, a gas compression chamber 7 is provided 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 ionic liquid storage chamber 9 is provided between the piston 6 and the cylinder body 1, and sealing rings 10 are respectively provided between the piston 6 and the cylinder body 1 on the upper and lower sides of the ionic liquid storage chamber 9 for sealing, and the ionic liquid storage chamber 9 is connected to the ionic liquid 8 on the top of the piston 6 through a plurality of ionic liquid channels 11 provided in the piston 6, and a one-way valve 12 is provided in the ionic liquid channel 11.

[0018] The ionic liquid storage chamber 9 is arranged in an annular shape on the outer surface of the piston 6 to form an annular seal after storing the ionic liquid.

[0019] A hydraulic chamber 13 is formed between the piston 6 and the rear end cover 3 . The hydraulic chamber 13 is used to drive the piston 6 to move up and down. A hydraulic oil inlet and outlet 14 is provided on the rear end cover 3 to realize hydraulic driving of the piston 6 .

[0020] A plurality of sealing rings 15 and guide rings 16 are provided between the piston 6 and the cylinder body 1 to perform sealing and guiding functions.

[0021] An ionic liquid inlet 17 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 .

[0022] Working principle:

[0023] During operation, the hydraulic oil enters and exits the hydraulic chamber 13 through the hydraulic oil inlet and outlet 14, which can realize the hydraulic drive of the piston 6, so that the piston 6 moves up and down. When the piston 6 moves downward, the gas enters the gas compression chamber 7 through the intake valve 4 in turn. When the piston 6 moves upward, the gas in the gas compression chamber 7 is compressed and pressurized, and then discharged outward through the exhaust valve 5 in turn, thereby realizing the pressurization of the gas. When the piston 6 moves upward, the pressure in the gas compression chamber 7 increases, and the ionic liquid 8 on the top of the piston 6 can enter the ionic liquid storage chamber 9 for storage through the one-way valve 12 and the ionic liquid channel 11, and the ionic liquid in the ionic liquid storage chamber 9 has a certain pressure, which can play a liquid sealing role between the piston 6 and the cylinder body 1. When the ionic liquid cylinder is in a tilted state, although the ionic liquid 8 on the top of the piston 6 will be concentrated on the relatively low side, resulting in the other side at a relatively high position being exposed without ionic liquid, the ionic liquid in the ionic liquid storage chamber 9 will also play a liquid sealing role, and together with the several sealing rings 15 provided between the piston 6 and the cylinder body 1, it can effectively prevent gas leakage from between the piston 6 and the cylinder body 1.

[0024] 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.

[0025] Anything not described in detail in the present invention is well known to those skilled in the art.

Claims

1. A structure for preventing tilting and air leakage of a compression cylinder, characterized in that: 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 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 ionic liquid storage chamber is provided between the piston and the cylinder body, sealing rings are provided between the piston and the cylinder body on the upper and lower sides of the ionic liquid storage chamber for sealing, the ionic liquid storage chamber is connected to the ionic liquid on the top of the piston through a plurality of ionic liquid channels provided in the piston, and a one-way valve is provided in the ionic liquid channel.

2. The anti-tilt and air leakage structure of a compression cylinder according to claim 1, characterized in that: The ionic liquid storage chamber is annularly arranged on the outer surface of the piston.

3. The anti-tilt and air leakage structure of a 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.

4. The anti-tilt and air leakage structure of a 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.

5. The anti-tilt and air leakage structure of a compression cylinder 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.

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