Air valve liquid impact prevention structure of compression air cylinder

Abstract

The utility model relates to the technical field of ionic liquid cylinders, in particular to an air valve liquid impact prevention structure of a 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, ionic liquid is arranged at the top of the piston and used for cooling, lubricating and sealing the piston and the cylinder body, and a buffer channel is formed in the front end cover. A plurality of inclined channels are arranged between the inner end face of the front end cover and the buffering channel along the circumference, and the gas compression cavity is communicated with the interior of the buffering channel through the inclined channels. Gas in the gas compression cavity is compressed to form high-pressure gas, part of the high-pressure gas enters the buffer channel through the inclined channel, the gas generates large resistance when gathered in the buffer channel, the ionic liquid is blocked, and impact force is weakened, so that impact of the ionic liquid on the gas inlet valve and the gas outlet valve is reduced, and the service life of the gas inlet valve and the gas outlet valve is guaranteed.

Description

Technical field:

[0001] The utility model relates to the technical field of ionic liquid cylinders, in particular to a liquid impact-proof structure of a gas valve of a compression cylinder. 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 cylinder's compression chamber to cool and lubricate the piston and improve the seal between the piston and cylinder. However, in actual operation, when the piston moves upward, due to the high gas pressure in the compression chamber, some of the ionic liquid in the compression chamber will impact the intake and exhaust valves along with the gas. The impact force of the liquid on the valves is much greater than that of the gas. Long-term operation can damage the intake and exhaust valves, shortening their service life. Currently, there is no effective solution.

[0003] In summary, the impact of ionic liquid in the ionic liquid cylinder on the intake valve and exhaust valve 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 a liquid impact-proof structure for the air valve of a compression cylinder, which solves the problem that ionic liquid may impact the intake valve and exhaust valve with the gas and shorten the service life of the intake valve and exhaust valve.

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

[0006] A liquid impact prevention structure for the valve of a compression cylinder includes 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, a buffer channel is provided in the front end cover, and a plurality of inclined channels are provided along the circumference between the inner end surface of the front end cover and the buffer channel, and the inclined channels connect the gas compression chamber with the interior of the buffer channel.

[0007] An intake and exhaust passage is provided between the intake valve and the exhaust valve.

[0008] The intake and exhaust channels are arranged horizontally, and the buffer channel is arranged vertically.

[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 sealing rings and guide rings are arranged between the piston and the cylinder body.

[0011] An ionic liquid inlet is provided on a side wall of the cylinder body on one side of the gas compression chamber.

[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 providing a buffer channel in the front end cover, a number of inclined channels are provided along the circumference between the inner end surface of the front end cover and the buffer channel. The inclined channel connects the gas compression chamber with the inside of the buffer channel. The processing is simple and maintenance-free. The gas in the gas compression chamber is compressed to form high-pressure gas. Part of the high-pressure gas enters the buffer channel through the inclined channel. When the gas gathers in the buffer channel, it generates great resistance, the ionic liquid is blocked, and the impact force is weakened, thereby reducing the impact of the ionic liquid on the intake valve and the exhaust valve, thereby ensuring the service life of the intake valve and the exhaust valve. 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. ionic liquid, 9. buffer channel, 10. inclined channel, 11. intake and exhaust channels, 12. hydraulic chamber, 13. hydraulic oil inlet and outlet, 14. sealing ring, 15. guide ring, 16. ionic liquid inlet. 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 1 As shown, a valve anti-liquid impact structure 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, a buffer channel 9 is provided in the front end cover 2, and a plurality of inclined channels 10 are provided along the circumference between the inner end surface of the front end cover 2 and the buffer channel 9, and the inclined channels 10 connect the gas compression chamber 7 with the inside of the buffer channel 9.

[0019] An intake and exhaust passage 11 is provided between the intake valve 4 and the exhaust valve 5 for the intake and exhaust of gas.

[0020] The inlet and exhaust channels 11 are arranged horizontally, and the buffer channel 9 is arranged vertically. The inlet and exhaust channels 11 are perpendicular to the buffer channel 9. With this design, when the gas or liquid in the buffer channel 9 enters the inlet and exhaust channels 11, it will be blocked and then diverted to both sides to reduce the impact force of the gas or liquid.

[0021] The cavity between the piston 6 and the rear end cover 3 is a hydraulic cavity 12, 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 13 to realize hydraulic drive of the piston 6.

[0022] A plurality of sealing rings 14 and guide rings 15 are provided between the piston 6 and the cylinder body 1 to perform sealing and guiding functions.

[0023] An ionic liquid inlet 16 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 .

[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, which is convenient for processing and installation.

[0025] Working principle:

[0026] During operation, hydraulic oil enters and exits the hydraulic chamber 12 through the hydraulic oil inlet and outlet 13, 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, the intake and exhaust channel 11, the buffer channel 9 and the inclined channel 10 in sequence. When the piston 6 moves upward, the gas in the gas compression chamber 7 is compressed and pressurized, and then discharged outward through the inclined channel 10, the buffer channel 9, the intake and exhaust channel 11, and the exhaust valve 5 in sequence, thereby achieving gas pressurization. After the high-pressure gas in the gas compression chamber 7 enters the buffer channel 9 through the inclined channel 10, the gas generates great resistance when it converges in the buffer channel 9, the ionic liquid is blocked, and the impact force is weakened. When the gas or liquid in the buffer channel 9 enters the intake and exhaust channel 11, it will be blocked again and diverted to both sides, further slowing down the impact force of the gas or liquid, thereby reducing the impact of the ionic liquid 8 on the intake valve 4 and the exhaust valve 5, ensuring the service life of the intake valve 4 and the exhaust valve 5.

[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 liquid impact prevention structure for a gas valve of a compression cylinder, characterized in that: It includes 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, a buffer channel is provided in the front end cover, and a plurality of inclined channels are provided along the circumference between the inner end surface of the front end cover and the buffer channel, and the inclined channels connect the gas compression chamber with the inside of the buffer channel.

2. The liquid impact prevention structure of a gas valve of a compression cylinder according to claim 1, characterized in that: An intake and exhaust passage is provided between the intake valve and the exhaust valve.

3. The liquid impact prevention structure of a gas valve of a compression cylinder according to claim 2, characterized in that: The intake and exhaust channels are arranged horizontally, and the buffer channel is arranged vertically.

4. The liquid impact prevention structure of a gas valve of a compression cylinder 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 liquid impact prevention structure of a gas valve 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.

6. The liquid impact prevention structure of a gas valve of a compression cylinder according to claim 1, characterized in that: An ionic liquid inlet is provided on a cylinder side wall on one side of the gas compression chamber.

7. The liquid impact prevention structure of a gas valve of a 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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