CN221096784U - Differential circulation liquid seal cylinder with balance cavity - Google Patents
Differential circulation liquid seal cylinder with balance cavity Download PDFInfo
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- CN221096784U CN221096784U CN202322267501.3U CN202322267501U CN221096784U CN 221096784 U CN221096784 U CN 221096784U CN 202322267501 U CN202322267501 U CN 202322267501U CN 221096784 U CN221096784 U CN 221096784U
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- 239000007788 liquid Substances 0.000 title claims abstract description 38
- 210000004907 gland Anatomy 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 13
- 238000007906 compression Methods 0.000 abstract description 10
- 230000006835 compression Effects 0.000 abstract description 8
- 239000002608 ionic liquid Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to the technical field of circulating liquid seal compressors, in particular to a differential circulating liquid seal cylinder with a balance cavity. A low-pressure cavity is formed in the main cylinder body between the main piston and the cylinder gland, and a low-pressure air inlet and a low-pressure air outlet which are communicated with the low-pressure cavity are formed in the side wall of the main cylinder body; a high-pressure cavity is formed in the auxiliary cylinder body between the auxiliary piston and the cylinder base, and a high-pressure air inlet and a high-pressure air outlet which are communicated with the high-pressure cavity are formed in the side wall of the auxiliary cylinder body; a balance cavity is arranged between the main piston and the auxiliary piston, and a balance air inlet and a balance air outlet which are communicated with the balance cavity are arranged on the side wall of the main cylinder body. The low-pressure cavity and the high-pressure cavity are mutually matched to carry out step-difference supercharging on the compressed gas, so that the compression efficiency is greatly improved. The gas pressure in the balance cavity can balance the piston force generated by the low-pressure cavity or the high-pressure cavity so as to ensure the stable operation of the piston and the whole service life of the cylinder.
Description
Technical field:
The utility model relates to the technical field of circulating liquid seal compressors, in particular to a differential circulating liquid seal cylinder with a balance cavity.
The background technology is as follows:
the circulating liquid seal compressor drives a piston in a cylinder body of the cylinder to reciprocate mainly through a driving mechanism so as to realize supercharging of gas. As in the patent application publication CN114439728a, a circulating liquid seal compressor is disclosed which is used for storing circulating liquid by providing an annular cavity between a piston and a cylinder, and by means of which lubrication, cooling and sealing are achieved. On the one hand, the pressurizing mode of the cylinder is a single-acting cylinder, the cylinder body is provided with an air inlet and an air outlet, gas enters the cylinder body from the air inlet, high-pressure gas is discharged from the air outlet after being pressurized in the cylinder body, and the single-acting cylinder can not carry out step-difference pressurizing on compressed gas, so that the compression efficiency is low; on the other hand, when the reciprocating motion of the piston pressurizes the gas, the pressure in the compression cavity is continuously increased, the stress of the piston is also continuously increased, the stable operation of the piston is easily influenced, the friction force between the piston and the cylinder body is increased, the whole service life of the cylinder is influenced, the sealing between the piston and the cylinder body can be influenced, and no good method for solving the problems exists at present.
In summary, the problems of differential pressure boosting and large piston force of compressed gas in a circulating liquid seal compressor have become a technical problem to be solved in industry.
The utility model comprises the following steps:
The utility model provides a differential circulation liquid seal cylinder with a balance cavity, which solves the problem of low compression efficiency of the prior single-acting cylinder and solves the problem that the prior piston force greatly influences the whole service life of the cylinder.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
The differential circulation liquid seal cylinder with the balance cavity comprises a main cylinder body, wherein a cylinder gland is arranged at one end of the main cylinder body, an auxiliary cylinder body is arranged at the other end of the main cylinder body, a cylinder base is arranged at the other end of the auxiliary cylinder body, a piston structure is arranged in the main cylinder body and the auxiliary cylinder body, the piston structure comprises a main piston, an auxiliary piston and a piston rod which connects the main piston and the auxiliary piston into a whole, the main piston is movably arranged in the main cylinder body, the auxiliary piston is movably arranged in the auxiliary cylinder body, and the piston rod is movably arranged in the cylinder gland;
The outer side surface of the main piston is provided with a main circulation cavity, the main circulation cavity is used for storing circulation liquid to cool, lubricate and hydraulically seal a main cylinder body, the side wall of the main cylinder body is provided with a main liquid inlet and a main liquid outlet which are communicated with the main circulation cavity, a low-pressure cavity is formed in the main cylinder body between the main piston and a cylinder gland, and the side wall of the main cylinder body is provided with a low-pressure air inlet and a low-pressure air outlet which are communicated with the low-pressure cavity;
The side wall of the auxiliary cylinder body is provided with a high-pressure cavity, and the side wall of the auxiliary cylinder body is provided with a high-pressure air inlet and a high-pressure air outlet which are communicated with the high-pressure cavity;
and a balance cavity is arranged between the main piston and the auxiliary piston and is used for balancing the force of the piston, and a balance air inlet and a balance air outlet which are communicated with the balance cavity are arranged on the side wall of the main cylinder body.
The main cylinder body is connected with the auxiliary cylinder body through bolts and is provided with a sealing ring for sealing.
An air inlet valve is arranged at the low-pressure air inlet, and an air outlet valve is arranged at the low-pressure air outlet.
And the high-pressure air inlet and the high-pressure air outlet are provided with air inlet and outlet valves.
The volume of the high pressure chamber is smaller than the volume of the low pressure chamber.
The low-pressure air outlet is connected with the high-pressure air inlet through a pipeline.
The utility model adopts the scheme and has the following advantages:
The main cylinder body and the auxiliary cylinder body are arranged, the main piston is movably arranged in the main cylinder body, the auxiliary piston is movably arranged in the auxiliary cylinder body, a low-pressure cavity is formed in the main cylinder body between the main piston and a cylinder gland, a high-pressure cavity is formed in the auxiliary cylinder body between the auxiliary piston and a cylinder base, a balance cavity is formed between the main piston and the auxiliary piston, when the main piston and the auxiliary piston reciprocate, the low-pressure cavity is used for carrying out primary pressurization on gas, the pressurized gas enters the high-pressure cavity through a pipeline for carrying out secondary pressurization, and finally is discharged outwards, and the low-pressure cavity and the high-pressure cavity are mutually matched to carry out differential pressurization on compressed gas, so that the compression efficiency is greatly improved; when the low-pressure cavity or the high-pressure cavity is pressurized, the internal gas pressure is continuously increased, the stress of the piston is also continuously increased, and the gas pressure in the balance cavity can balance the piston force generated by the low-pressure cavity or the high-pressure cavity so as to ensure the stable operation of the piston and ensure the whole service life of the cylinder.
Description of the drawings:
Fig. 1 is a schematic cross-sectional view of the present utility model.
In the figure, 1, a main cylinder body, 2, a cylinder gland, 3, a secondary cylinder body, 4, a cylinder base, 5, a main piston, 6, a secondary piston, 7, a piston rod, 8, a main circulation cavity, 9, a main liquid inlet, 10, a main liquid outlet, 11, a low-pressure cavity, 12, a low-pressure air inlet, 13, a low-pressure air outlet, 14, a secondary circulation cavity, 15, a secondary liquid inlet, 16, a secondary liquid outlet, 17, a high-pressure cavity, 18, a high-pressure air inlet, 19, a high-pressure air outlet, 20, an air inlet valve, 21, an air outlet valve, 22, an air inlet and outlet valve, 23, a balance cavity, 24, a balance air inlet, 25 and a balance air outlet.
The specific embodiment is as follows:
In order to clearly illustrate the technical features of the present solution, the present utility model will be described in detail below with reference to the following detailed description and the accompanying drawings.
As shown in fig. 1, the differential circulation liquid seal cylinder with the balance cavity comprises a main cylinder body 1, wherein one end of the main cylinder body 1 is provided with a cylinder gland 2, the other end of the main cylinder body 1 is provided with an auxiliary cylinder body 3, the other end of the auxiliary cylinder body 3 is provided with a cylinder base 4, piston structures are arranged in the main cylinder body 1 and the auxiliary cylinder body 3, each piston structure comprises a main piston 5, an auxiliary piston 6 and a piston rod 7 which connects the main piston 5 and the auxiliary piston 6 into a whole, the main piston 5 is movably arranged in the main cylinder body 1, the auxiliary piston 6 is movably arranged in the auxiliary cylinder body 3, and the piston rod 7 is movably arranged in the cylinder gland 2;
The outer side surface of the main piston 5 is provided with a main circulation cavity 8, the main circulation cavity 8 is used for storing circulation liquid to cool, lubricate and seal the main cylinder body 1, sealing rings are respectively arranged on two sides of the main circulation cavity 8 to seal, the side wall of the main cylinder body 1 is provided with a main liquid inlet 9 and a main liquid outlet 10 which are communicated with the main circulation cavity 8, a low-pressure cavity 11 is formed in the main cylinder body 1 between the main piston 5 and the cylinder gland 2, and the side wall of the main cylinder body 1 is provided with a low-pressure air inlet 12 and a low-pressure air outlet 13 which are communicated with the low-pressure cavity 11;
The outer side surface of the auxiliary piston 6 is provided with an auxiliary circulating cavity 14, the auxiliary circulating cavity 14 is used for storing circulating liquid to cool, lubricate and hydraulically seal the auxiliary cylinder body 3, sealing rings are respectively arranged on two sides of the auxiliary circulating cavity 14 to seal the auxiliary cylinder body 3, the side wall of the auxiliary cylinder body 3 is provided with an auxiliary liquid inlet 15 and an auxiliary liquid outlet 16 which are communicated with the auxiliary circulating cavity 14, a high-pressure cavity 17 is formed in the auxiliary cylinder body 3 between the auxiliary piston 6 and the cylinder base 4, and the side wall of the auxiliary cylinder body 3 is provided with a high-pressure air inlet 18 and a high-pressure air outlet 19 which are communicated with the high-pressure cavity 17;
A balance cavity 23 is formed in the main cylinder body 1 between the main piston 5 and the auxiliary piston 6, the balance cavity 23 is used for balancing piston force, a balance air inlet 24 and a balance air outlet 25 which are communicated with the balance cavity 23 are arranged on the side wall of the main cylinder body 1, and external air enters the balance cavity 23 from the balance air inlet 24 and is discharged from the balance air outlet 25.
The main cylinder body 1 and the auxiliary cylinder body 2 are connected through bolts and are provided with sealing rings for sealing.
An air inlet valve 20 is arranged at the low-pressure air inlet 12, and an air outlet valve 21 is arranged at the low-pressure air outlet 13.
The high-pressure air inlet 18 and the high-pressure air outlet 19 are provided with an air inlet and outlet valve 22.
The volume of the high-pressure chamber 17 is smaller than the volume of the low-pressure chamber 11, and the smaller the volume is, the larger the pressure on the gas is, and the larger the volume is, the smaller the pressure on the gas is.
The low-pressure air outlet 13 is connected with the high-pressure air inlet 18 through a pipeline, so that the air pressurized in the low-pressure cavity 11 can enter the high-pressure cavity 17 for secondary pressurization.
The circulating liquid in the main circulation chamber 8 and the sub-circulation chamber 14 includes a liquid such as lubricating oil, water, or ionic liquid. Preferably, the application adopts ionic liquid, because the ionic liquid has the advantages of no pollution, easy separation from products, easy recovery and repeated recycling, and even if leaked, the ionic liquid does not pollute the gas.
Working principle:
When the piston rod 7 works, the main piston 5 and the auxiliary piston 6 are driven to synchronously reciprocate in the main cylinder body 1 and the auxiliary cylinder body 3, when the main piston 5 and the auxiliary piston 6 move leftwards, the low-pressure cavity 11 is in a compressed state, the high-pressure cavity 17 is in an air inlet state, specifically, the main piston 5 carries out primary pressurization on air in the low-pressure cavity 11, the air in the low-pressure cavity 11 enters the high-pressure cavity 17 through the low-pressure air outlet 13, a pipeline and the high-pressure air inlet 18, the pressure of the air in the low-pressure cavity 11 is continuously increased in the compression process, the piston stress is also continuously increased, and the air pressure in the balance cavity 23 can balance the piston force generated by the low-pressure cavity 11; when the main piston 5 and the auxiliary piston 6 move rightwards, the high-pressure cavity 17 is in a compression state, the low-pressure cavity 11 is in an air inlet state, specifically, the auxiliary piston 6 carries out secondary pressurization on the air in the high-pressure cavity 17, the pressurized air is discharged outwards through the high-pressure air outlet 19, the air enters the low-pressure cavity 11 from the low-pressure air inlet 12, the pressure of the air in the high-pressure cavity 17 is continuously increased in the compression process, the stress of the piston is also continuously increased, and the air pressure in the balance cavity 23 can balance the piston force generated by the high-pressure cavity 17. The function of the step-difference type circulating liquid seal compression cylinder is repeatedly realized, the low-pressure cavity 11 and the high-pressure cavity 17 are matched with each other, so that step-difference type supercharging can be carried out on compressed gas, and the compression efficiency is greatly improved; meanwhile, the pressure of the gas in the balance cavity 23 can balance the piston force generated by the low-pressure cavity 11 or the high-pressure cavity 17, so that the stable operation of the piston is ensured, the whole service life of the cylinder is ensured, in addition, the pressure difference of two sides of a sealing ring between the piston and the cylinder body can be reduced, the sealing ring is prevented from being impacted by the air pressure, and the sealing effect is improved.
The above embodiments are not to be taken as limiting the scope of the utility model, and any alternatives or modifications to the embodiments of the utility model will be apparent to those skilled in the art and fall within the scope of the utility model.
The present utility model is not described in detail in the present application, and is well known to those skilled in the art.
Claims (6)
1. The utility model provides a take differential circulation liquid seal cylinder in balanced chamber which characterized in that: the hydraulic cylinder comprises a main cylinder body, wherein a cylinder gland is arranged at one end of the main cylinder body, an auxiliary cylinder body is arranged at the other end of the main cylinder body, a cylinder base is arranged at the other end of the auxiliary cylinder body, piston structures are arranged in the main cylinder body and the auxiliary cylinder body, each piston structure comprises a main piston, an auxiliary piston and a piston rod which connects the main piston and the auxiliary piston into a whole, the main piston is movably arranged in a main cylinder body, the auxiliary piston is movably arranged in the auxiliary cylinder body, and the piston rod is movably arranged in the cylinder gland;
The outer side surface of the main piston is provided with a main circulation cavity, the main circulation cavity is used for storing circulation liquid to cool, lubricate and hydraulically seal a main cylinder body, the side wall of the main cylinder body is provided with a main liquid inlet and a main liquid outlet which are communicated with the main circulation cavity, a low-pressure cavity is formed in the main cylinder body between the main piston and a cylinder gland, and the side wall of the main cylinder body is provided with a low-pressure air inlet and a low-pressure air outlet which are communicated with the low-pressure cavity;
The side wall of the auxiliary cylinder body is provided with a high-pressure cavity, and the side wall of the auxiliary cylinder body is provided with a high-pressure air inlet and a high-pressure air outlet which are communicated with the high-pressure cavity;
and a balance cavity is arranged between the main piston and the auxiliary piston and is used for balancing the force of the piston, and a balance air inlet and a balance air outlet which are communicated with the balance cavity are arranged on the side wall of the main cylinder body.
2. The differential circulation liquid seal cylinder with a balance cavity according to claim 1, wherein: the main cylinder body is connected with the auxiliary cylinder body through bolts and is provided with a sealing ring for sealing.
3. The differential circulation liquid seal cylinder with a balance cavity according to claim 1, wherein: an air inlet valve is arranged at the low-pressure air inlet, and an air outlet valve is arranged at the low-pressure air outlet.
4. The differential circulation liquid seal cylinder with a balance cavity according to claim 1, wherein: and the high-pressure air inlet and the high-pressure air outlet are provided with air inlet and outlet valves.
5. The differential circulation liquid seal cylinder with a balance cavity according to claim 1, wherein: the volume of the high pressure chamber is smaller than the volume of the low pressure chamber.
6. The differential circulation liquid seal cylinder with a balance cavity according to claim 1, wherein: the low-pressure air outlet is connected with the high-pressure air inlet through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322267501.3U CN221096784U (en) | 2023-08-22 | 2023-08-22 | Differential circulation liquid seal cylinder with balance cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322267501.3U CN221096784U (en) | 2023-08-22 | 2023-08-22 | Differential circulation liquid seal cylinder with balance cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221096784U true CN221096784U (en) | 2024-06-07 |
Family
ID=91327223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322267501.3U Active CN221096784U (en) | 2023-08-22 | 2023-08-22 | Differential circulation liquid seal cylinder with balance cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221096784U (en) |
-
2023
- 2023-08-22 CN CN202322267501.3U patent/CN221096784U/en active Active
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