CN212985481U - Double-oil-cylinder symmetric hydraulic compression cylinder - Google Patents
Double-oil-cylinder symmetric hydraulic compression cylinder Download PDFInfo
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- CN212985481U CN212985481U CN202021666193.1U CN202021666193U CN212985481U CN 212985481 U CN212985481 U CN 212985481U CN 202021666193 U CN202021666193 U CN 202021666193U CN 212985481 U CN212985481 U CN 212985481U
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Abstract
The utility model provides a two hydro-cylinder symmetry formula hydraulic compression jar relates to gas compression device technical field, can further promote compression efficiency to guarantee the safety of piston rod. The double-oil-cylinder symmetric hydraulic compression cylinder comprises a first oil cylinder, a second oil cylinder, a first compression cavity, a second compression cavity, a piston rod, a first oil cylinder piston, a second oil cylinder piston, a first air cylinder piston, a second air cylinder piston, a communicating pipe, an oil-gas isolation seal, a gas seal and a hydraulic reversing system, wherein the same first oil cylinder and the same second oil cylinder are symmetrically arranged at two ends; the cylinder diameter of the first compression cavity is larger than that of the second compression cavity, and the oil-gas isolation seal and the gas seal are respectively arranged between the oil cylinder and the compression cavity to monitor and prevent oil-gas leakage. Because the piston rod is only pushed by pressure in the moving process, the risk of breaking is avoided.
Description
Technical Field
The utility model belongs to the technical field of the gas compression device technique and specifically relates to a two hydro-cylinder symmetry formula hydraulic compression jar.
Background
At present, a common compression cylinder for compressing air, hydrogen or other media is a one-stage compression, and a piston slides in the gas compression cylinder, so that the compression of gas is completed. The multistage gas compression is generally performed by a plurality of compressors having different compression powers, but providing a plurality of compressors increases the cost of equipment, and the cooperation between the plurality of compressors requires complicated adjustment. In addition, two-stage compression is also performed by using a single oil cylinder, and the gas compression cylinders are arranged on two sides of the oil cylinder, but in order to further improve the compression efficiency and the compression ratio, the existing two-stage compression cylinder needs to be further improved, and the stress of the piston rod needs to be improved to ensure the safety of the piston rod.
SUMMERY OF THE UTILITY MODEL
In order to further promote gas compression efficiency, strengthen oil gas isolation to guarantee the safety of piston rod, the utility model provides a two hydro-cylinder symmetry formula hydraulic compression jar, concrete technical scheme is as follows.
A double-oil-cylinder symmetric hydraulic compression cylinder comprises a first oil cylinder, a second oil cylinder, a first compression cavity, a second compression cavity, a piston rod, a first oil cylinder piston, a second oil cylinder piston, a first air cylinder piston, a second air cylinder piston, an oil-gas isolation seal, a gas seal and a hydraulic reversing system; the first oil cylinder is connected with the first compression cavity through an oil-gas separation plate, the first compression cavity is connected with the second compression cavity through an air chamber separation plate, and the second compression cavity is connected with the second oil cylinder through an oil-gas separation plate; the first oil cylinder piston is arranged in the cavity of the first oil cylinder, the second oil cylinder piston is arranged in the cavity of the second oil cylinder, the first air cylinder piston is arranged in the first compression cavity, the second air cylinder piston is arranged in the second compression cavity, and the first oil cylinder piston and the second oil cylinder piston are respectively fixed at two ends of the piston rod; the first oil cylinder and the second oil cylinder are arranged at two ends of the double-oil-cylinder symmetrical hydraulic compression cylinder, a cavity on the right side of a piston of the first oil cylinder is connected with a cavity on the left side of a piston of the second oil cylinder through a communicating pipe, and the cylinder diameter of the first compression cavity is larger than that of the second compression cavity; the oil-gas isolating plate is provided with an oil-gas isolating seal at the position of the piston rod hole, and the gas chamber isolating plate is provided with a gas seal at the position of the piston rod hole; and the hydraulic reversing system is respectively connected with the first oil cylinder and the second oil cylinder.
Preferably, a third compression cavity is further arranged between the second compression cavity and the second oil cylinder, and the cylinder diameter of the second compression cavity is larger than that of the third compression cavity.
Preferably, a fourth compression cavity is further arranged between the third compression cavity and the second oil cylinder, and the cylinder diameter of the third compression cavity is larger than that of the fourth compression cavity.
Preferably, a plurality of gas compression cavities are further arranged between the third compression cavity and the second oil cylinder.
It is further preferable that the first compression chamber and the second compression chamber are provided with water jackets on the outer sides.
Further preferably, a gas connecting pipeline is arranged between the first compression cavity and the second compression cavity, and a cooler is arranged on the gas connecting pipeline.
It is further preferred that the oil-gas isolation seal is provided with a monitoring port, and the gas seal is also provided with a monitoring port.
The beneficial effects of the utility model include: oil cylinders of the double-oil-cylinder symmetric hydraulic compression cylinder are arranged at two ends, and adjacent chambers of the oil cylinder and the compression chamber are communicated with each other, so that pressure cannot be borne, and oil-gas isolation can be better realized; the piston rod is only subjected to the oil pressure of the oil cylinder cavities at two sides, so that the piston rod is only subjected to pressure but not tensile force in the movement process, and the safety of the piston rod is ensured; in addition, the design of the sealing structure facilitates leakage monitoring, a plurality of compression cylinders can be arranged to complete multi-stage compression, the water jacket can provide a good cooling effect, and the cooler can also cool and improve the compression efficiency.
Drawings
FIG. 1 is a schematic structural view of a double-cylinder symmetrical hydraulic compression cylinder;
FIG. 2 is a schematic diagram of the path of gas compression;
FIG. 3 is a schematic diagram of the path of gas compression;
FIG. 4 is a profile view of a dual cylinder symmetrical hydraulic compression cylinder;
in the figure: 1-a first oil cylinder, 2-a second oil cylinder, 3-a first compression cavity, 4-a second compression cavity, 5-a piston rod, 6-a first oil cylinder piston, 7-a second oil cylinder piston, 8-a first air cylinder piston, 9-a second air cylinder piston, 10-an oil-gas isolation seal, 11-an air seal, 12-an oil-gas isolation plate and 13-an air chamber isolation plate.
Detailed Description
The following describes a specific embodiment of a double-cylinder symmetric hydraulic compression cylinder according to the present invention with reference to fig. 1 to 4.
A double-oil-cylinder symmetrical hydraulic compression cylinder comprises a first oil cylinder 1, a second oil cylinder 2, a first compression cavity 3, a second compression cavity 4, a piston rod 5, a first oil cylinder piston 6, a second oil cylinder piston 7, a first air cylinder piston 8, a second air cylinder piston 9, an oil-gas isolation seal 10, a gas seal 11 and a hydraulic reversing system, wherein the structure comprises two oil cylinders, and the two oil cylinders which are symmetrically arranged are matched in a coordinated manner to push the piston rod to reciprocate; the two compression cavities can complete two-stage compression of gas, and a plurality of compression cylinders can be arranged to realize multi-stage compression; in addition, the piston rod is only under the action of pressure under the control of the two oil cylinders, so that the risk that the piston rod is pulled short is avoided, the sealing is further enhanced due to the arrangement of the sealing structure, and the hydraulic reversing system supplies liquid to the oil cylinders to control the two oil cylinders to work cooperatively.
As shown in figure 1, the first oil cylinder 1 is connected with the first compression cavity 3 through an oil-gas separation plate 12, the first compression cavity 3 is connected with the second compression cavity 4 through an air chamber separation plate 13, and the second compression cavity 4 is connected with the second oil cylinder 2 through an oil-gas separation plate. The first oil cylinder piston 6 is arranged in the cavity of the first oil cylinder, the second oil cylinder piston 7 is arranged in the cavity of the second oil cylinder, and the oil cylinder piston is used for pushing the piston rod to move. The first cylinder piston 8 is arranged in the first compression chamber, the second cylinder piston 9 is arranged in the second compression chamber, and the cylinder piston and the compression chamber are matched for compressing gas. The first oil cylinder piston 6 and the second oil cylinder piston 7 are respectively fixed at two ends of the piston rod, and the piston rod 5 is respectively pushed to move from two ends by hydraulic pressure in the oil cylinder. The first oil cylinder 1 and the second oil cylinder 2 are arranged at two ends of the double-oil-cylinder symmetrical hydraulic compression cylinder, a cavity on the right side of the first oil cylinder piston and a cavity on the left side of the second oil cylinder piston are connected through a communicating pipe, pressure can be balanced, a piston rod cannot be pulled, the breaking risk is avoided, the bore diameter of the first compression cavity 3 is larger than that of the second compression cavity 4, and therefore two-stage compression can be completed. The oil-gas isolation plate is provided with oil-gas isolation seals at the positions of the piston rod holes, so that oil-gas isolation is guaranteed, and oil-gas leakage monitoring is realized. The air chamber isolation plate 13 is provided with an air seal at the position of the piston rod hole to ensure the air seal. The hydraulic reversing system is respectively connected with the first oil cylinder and the second oil cylinder, and the two oil cylinders are controlled to work cooperatively through the hydraulic system. The left and right in the present embodiment are explained in the left and right in the drawings, and the principle is the same as that of the views in other directions.
In the modification of the present embodiment, a third compression chamber is further provided between the second compression chamber 4 and the second cylinder 2, and the cylinder diameter of the second compression chamber is larger than that of the third compression chamber, so that three-stage compression can be realized. In addition, a fourth compression cavity is arranged between the third compression cavity and the second oil cylinder, and the cylinder diameter of the third compression cavity is larger than that of the fourth compression cavity, so that four-stage compression can be realized. A plurality of gas compression cavities are further arranged between the third compression cavity and the second oil cylinder, and therefore multi-stage compression can be achieved.
Wherein a water jacket may be further provided at an outer side of the first compression chamber and the second compression chamber for cooling heat generated during compressing the gas. Be provided with gas connection pipeline between first compression chamber and the second compression chamber, carry compressed gas through gas connection pipeline, be provided with the cooler on the gas connection pipeline, cool down the gas after the compression to promote compression efficiency. In addition, a monitoring port is arranged at the oil-gas isolation sealing position and used for monitoring oil-gas leakage, and a monitoring port is also arranged at the gas sealing position and used for monitoring gas leakage. The cavity on the right side of the first oil cylinder and the cavity on the left side of the second oil cylinder are used as isolation cavities, and isolation effects are further improved. In addition, when the compression cylinder runs, the oil and gas cylinders are not common and are completely separated, and the surfaces of the two piston rod sections are not provided with hydraulic oil, so that the hydraulic oil is prevented from being brought into the piston rods.
The working mode of the double-oil-cylinder symmetric hydraulic compression cylinder is explained by combining the accompanying drawings, when oil is fed into the left cavity of the first oil cylinder, the left cavity of the piston of the first oil cylinder is a high-pressure cavity, the cavity on the right side of the piston of the second oil cylinder returns oil under normal pressure, the piston rod is pushed rightwards to push the pistons to move synchronously, the cavity on the left side of the piston of the first oil cylinder enters air at the first stage, the cavity on the right side of the piston of the first oil cylinder compresses at the first stage, the cavity on the left side of the piston of the second oil cylinder enters air at the second stage, the cavity on the right side of the piston of the second oil. When the piston rod moves to the rightmost side, the hydraulic system is reversed, oil is fed into the right cavity of the second oil cylinder at the moment, the cavity on the right side of the piston of the second oil cylinder is a high-pressure cavity, the cavity on the left side of the piston of the first oil cylinder returns at normal pressure, the piston rod is pushed by leftward thrust to push each piston to move synchronously, the cavity on the left side of the piston of the first oil cylinder is compressed at one stage at the moment, air is fed into the cavity on the right side of the piston of the first oil cylinder at one stage, the cavity on the left side of the piston of the second air cylinder is compressed at two stages, air is fed into the. The pressure of the oil cylinders at the two ends is the same in the working process of the oil cylinders. Repeating the steps to complete two-stage compression of the gas; in case of multi-stage compression, the chambers are connected in the same manner as the first and second compression chambers. In the process, the cylinder diameters of the first compression cavity and the second compression cavity are different, but the strokes of the pistons are the same, so that the compression can be performed twice in the reciprocating process, and the compression efficiency is improved.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (7)
1. A double-oil-cylinder symmetric hydraulic compression cylinder comprises a first oil cylinder, a second oil cylinder, a first compression cavity, a second compression cavity, a piston rod, a first oil cylinder piston, a second oil cylinder piston, a first air cylinder piston, a second air cylinder piston, an oil-gas isolation seal, a gas seal and a hydraulic reversing system; the first oil cylinder is connected with the first compression cavity through an oil-gas separation plate, the first compression cavity is connected with the second compression cavity through an air chamber separation plate, and the second compression cavity is connected with the second oil cylinder through an oil-gas separation plate; the first oil cylinder piston is arranged in the cavity of the first oil cylinder, the second oil cylinder piston is arranged in the cavity of the second oil cylinder, the first air cylinder piston is arranged in the first compression cavity, the second air cylinder piston is arranged in the second compression cavity, and the first oil cylinder piston and the second oil cylinder piston are respectively fixed at two ends of the piston rod; the hydraulic compression device is characterized in that the first oil cylinder and the second oil cylinder are arranged at two ends of a double-oil-cylinder symmetrical hydraulic compression cylinder, a cavity on the right side of a piston of the first oil cylinder is connected with a cavity on the left side of a piston of the second oil cylinder through a communicating pipe, and the cylinder diameter of the first compression cavity is larger than that of the second compression cavity; the oil-gas isolating plate is provided with an oil-gas isolating seal at the position of the piston rod hole, and the gas chamber isolating plate is provided with a gas seal at the position of the piston rod hole; and the hydraulic reversing system is respectively connected with the first oil cylinder and the second oil cylinder.
2. The dual cylinder symmetric hydraulic compression cylinder as claimed in claim 1, wherein a third compression chamber is further disposed between the second compression chamber and the second cylinder, and the diameter of the second compression chamber is larger than that of the third compression chamber.
3. The dual cylinder symmetric hydraulic compression cylinder as claimed in claim 2, wherein a fourth compression chamber is further disposed between the third compression chamber and the second cylinder, and the diameter of the third compression chamber is larger than that of the fourth compression chamber.
4. The dual cylinder symmetric hydraulic compression cylinder of claim 2, wherein a plurality of gas compression chambers are further provided between the third compression chamber and the second cylinder.
5. The dual cylinder symmetric hydraulic compression cylinder as in any one of claims 1-4, wherein the first and second compression chambers are provided with water jackets on the outside.
6. The dual cylinder symmetric hydraulic compression cylinder as claimed in claim 1, wherein a gas connection line is disposed between the first compression chamber and the second compression chamber, and a cooler is disposed on the gas connection line.
7. The dual cylinder symmetric hydraulic compression cylinder of claim 1 wherein the oil-gas isolation seal is provided with a monitoring port and the gas seal is also provided with a monitoring port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021666193.1U CN212985481U (en) | 2020-08-12 | 2020-08-12 | Double-oil-cylinder symmetric hydraulic compression cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021666193.1U CN212985481U (en) | 2020-08-12 | 2020-08-12 | Double-oil-cylinder symmetric hydraulic compression cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212985481U true CN212985481U (en) | 2021-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021666193.1U Active CN212985481U (en) | 2020-08-12 | 2020-08-12 | Double-oil-cylinder symmetric hydraulic compression cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212985481U (en) |
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2020
- 2020-08-12 CN CN202021666193.1U patent/CN212985481U/en active Active
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