Vacuum degassing apparatus

Abstract

This utility model relates to a vacuum degassing device, comprising a support plate, an oil cylinder, a pneumatic cylinder, a molecular sieve, a first U-shaped plate, a second U-shaped plate, a first oil-gas control unit, a second oil-gas control unit, and an oil supply unit. The oil cylinder, pneumatic cylinder, molecular sieve, first U-shaped plate, second U-shaped plate, and oil supply unit are all mounted on the support plate. The first oil-gas control unit is mounted on the first U-shaped plate, and the second oil-gas control unit is mounted on the second U-shaped plate. The first and second oil-gas control units are respectively connected to the oil cylinder and / or the pneumatic cylinder. The oil supply unit is connected to the second oil-gas control unit, and the molecular sieve is connected to the first oil-gas control unit. This utility model employs a mechanical expansion method to create a vacuum, using a limit magnetic switch and a pneumatic cylinder with the same stroke to pull the pneumatic cylinder. It detects the required expansion dimension of the vacuum cylinder and actively stops operation upon reaching the target dimension, ensuring consistent vacuum levels each time.

Description

Technical Field

[0001] This utility model relates to the field of vacuum degassing technology, and in particular to a vacuum degassing device. Background Technology

[0002] In the field of power equipment maintenance and fault diagnosis, transformer oil chromatography is a crucial detection method. By accurately analyzing the composition and content of dissolved gases (such as hydrogen (H2), methane (CH4), ethane (C2H6), ethylene (C2H4), acetylene (C2H2), carbon monoxide (CO), and carbon dioxide (CO2)) in transformer oil, it can promptly detect potential faults within the transformer, such as overheating and discharge, providing strong support for the stable operation of power equipment. In the process of transformer oil chromatography, sample preparation is one of the key steps to obtain accurate analytical results. Sample preparation involves extracting faulty gases from the transformer oil for subsequent chromatographic analysis. Currently, using a vacuum degassing device for sample preparation is a common and effective method. This device creates a vacuum environment and utilizes the principle that the solubility of gases decreases under vacuum conditions, allowing gases to be separated from the oil quickly, efficiently, and completely.

[0003] However, existing vacuum degassing devices based on vacuum pumps to create a vacuum environment have several problems in practical applications. First, the efficiency of the vacuum pump per unit time gradually decreases as the vacuum environment is used. This is because when a vacuum environment is about to be formed, the vacuum pump motor is in a stall state, requiring it to output a large torque to overcome system resistance. At this time, the current increases sharply, causing severe heating of the motor windings. Prolonged exposure to this state can lead to motor overheating and damage, thus affecting the performance and lifespan of the vacuum pump. Second, with increasing usage time, the vacuum level created by the vacuum pump is inconsistent each time. Differences in vacuum level lead to inconsistent degassing efficiency in the oil, resulting in fluctuations in the amount of gas extracted each time. Since the consistency of gas analysis results highly depends on the stability and accuracy of the extracted gas volume, this inconsistency ultimately leads to a decrease in the consistency of gas analysis results, making fault diagnosis of power equipment difficult and reducing the reliability and effectiveness of transformer oil chromatography analysis technology.

[0004] Utility model patent CN117849249A discloses a vacuum degassing device and method for oil chromatography monitoring. This device uses vacuum degassing technology in conjunction with a variable-diameter piston to achieve oil-gas separation, ensuring the acquisition of all gases in the oil, improving the rate of gas precipitation and the reliability of monitoring data. The device mainly includes key components such as an oil sample injector, a gas washing tube, a degassing bottle, multiple solenoid valves, a high-speed magnetic stirrer, a gas sampling injector, a gas collecting chamber, a variable-diameter piston, a cylinder, and a vacuum pump. However, this patent uses a vacuum pump to create a vacuum environment, which has the problems of being easily damaged and inconsistent vacuum levels each time.

[0005] Therefore, providing a solution that is not easily damaged and maintains a consistent vacuum level in each manufacturing process is an urgent problem that needs to be solved. Utility Model Content

[0006] The purpose of this invention is to overcome the defects of the existing technology and provide a vacuum degassing device.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] According to one aspect of the present invention, a vacuum degassing device is provided, comprising a support plate, an oil cylinder, a pneumatic cylinder, a molecular sieve, a first U-shaped plate, a second U-shaped plate, a first oil-gas control unit, a second oil-gas control unit, and an oil supply unit. The oil cylinder, the pneumatic cylinder, the molecular sieve, the first U-shaped plate, the second U-shaped plate, and the oil supply unit are all mounted on the support plate. The first oil-gas control unit is mounted on the first U-shaped plate, and the second oil-gas control unit is mounted on the second U-shaped plate. The first oil-gas control unit and the second oil-gas control unit are respectively connected to the oil cylinder and / or the pneumatic cylinder. The oil supply unit is connected to the second oil-gas control unit, and the molecular sieve is connected to the first oil-gas control unit.

[0009] As a preferred technical solution, the first oil and gas control unit includes a solenoid valve module, which is mounted on a first U-shaped plate and is connected to both an oil cylinder and a pneumatic cylinder.

[0010] As a preferred technical solution, the first oil and gas control unit includes a first connecting pipe, a second connecting pipe, a third connecting pipe and a fourth connecting pipe, and the solenoid valve module includes a first solenoid valve, a second solenoid valve, a third solenoid valve and a fourth solenoid valve;

[0011] The first solenoid valve is connected to the oil cylinder through the first connecting pipe, the second solenoid valve is connected to the oil cylinder through the second connecting pipe, the third solenoid valve is connected to the air cylinder through the third connecting pipe, and the fourth solenoid valve is connected to the air cylinder through the fourth connecting pipe.

[0012] As a preferred technical solution, the first oil and gas control unit further includes a fifth connecting pipe, and the solenoid valve module is connected to the molecular sieve through the fifth connecting pipe.

[0013] As a preferred technical solution, the first oil and gas control unit further includes a flow stabilizing valve, a fifth solenoid valve, and a pressure stabilizing valve. The flow stabilizing valve, the fifth solenoid valve, and the pressure stabilizing valve are all mounted on the first U-shaped plate. The fifth solenoid valve and the pressure stabilizing valve are connected. The flow stabilizing valve is connected to the fifth solenoid valve and the molecular sieve, respectively.

[0014] As a preferred technical solution, the device further includes a metering valve, which is connected to both the cylinder and the pressure regulating valve.

[0015] As a preferred technical solution, the second oil and gas control unit includes a gas cup, a sixth solenoid valve, a seventh solenoid valve, and an eighth connecting pipe. The gas cup, the sixth solenoid valve, and the seventh solenoid valve are all mounted on the second U-shaped plate. The sixth solenoid valve is connected to the oil cylinder, and the gas cup is connected to the seventh solenoid valve through the eighth connecting pipe.

[0016] As a preferred technical solution, the second oil and gas control unit further includes a ninth solenoid valve, a tenth solenoid valve, a sixth connecting pipe and a seventh connecting pipe, wherein the ninth solenoid valve and the tenth solenoid valve are both installed on the second U-shaped plate;

[0017] The ninth and tenth solenoid valves are connected to the cylinder via the sixth connecting pipe, and the air cup is connected to the ninth solenoid valve via the seventh connecting pipe.

[0018] As a preferred technical solution, the oil supply unit includes an eighth solenoid valve, an eleventh solenoid valve, and an oil cup. The eighth solenoid valve, the eleventh solenoid valve, and the oil cup are all mounted on a support plate. The eleventh solenoid valve, the oil cup, and the eighth solenoid valve are connected in sequence. The sixth solenoid valve and the seventh solenoid valve are each connected to the oil cup.

[0019] As a preferred technical solution, the device further includes an air pump and an oil pump, the oil pump being connected to an eleventh solenoid valve, and the air pump being connected to a molecular sieve.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. This utility model uses a cylinder, an oil cylinder, a first oil-gas control unit, and a second oil-gas control unit to mechanically expand the vacuum to create a vacuum. It uses a limit magnetic switch and uses cylinders with the same stroke to pull the cylinder. It detects the size position that the vacuum cylinder needs to expand to. When the position is reached, it actively stops running to ensure that the vacuum degree created each time is consistent.

[0022] 2. Before entering the cylinder, the gas of this invention needs to pass through a gas cup to filter and separate the gas, and further remove other impurities from the gas.

[0023] 3. This utility model also incorporates a molecular sieve, which can remove moisture and other gaseous impurities from the air, producing a dry and pure gas suitable for fault gas analysis; it also provides power to the solenoid valve module.

[0024] 4. This utility model uses multiple different types of solenoid valves to control the entire degassing process. The solenoid valves have a fast response speed and can quickly perform corresponding actions. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle;

[0027] Figure 3 This is a partial schematic diagram of the first oil and gas control unit of this utility model;

[0028] Figure 4 This is a partial schematic diagram of the second oil and gas control unit of this utility model;

[0029] 1. Support plate; 2. Hydraulic cylinder; 3. Pneumatic cylinder; 4. Molecular sieve; 5. First U-shaped plate; 6. Solenoid valve module; 7. First solenoid valve; 8. Second solenoid valve; 9. Third solenoid valve; 10. Fourth solenoid valve; 11. Pressure regulating valve; 12. Fifth solenoid valve; 13. Flow regulating valve; 14. Second U-shaped plate; 15. Air cup; 16. Sixth solenoid valve; 17. Seventh solenoid valve; 18. Cylinder cleaning valve; 19. Ninth solenoid valve; 20. Tenth solenoid valve; 21. Eleventh solenoid valve; 22. Oil cup; 23. Eighth solenoid valve; 24. First connecting pipe; 25. Second connecting pipe; 26. Third connecting pipe; 27. Fourth connecting pipe; 28. Fifth connecting pipe; 29. ​​Sixth connecting pipe; 30. Seventh connecting pipe; 31. Eighth connecting pipe. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present utility model.

[0031] To address some problems existing in current vacuum pump vacuum generation, a vacuum degassing device is provided. This invention utilizes a cylinder, an oil cylinder, a first oil-gas control unit, and a second oil-gas control unit to mechanically expand the vacuum. A limit magnetic switch is used, and cylinders with the same stroke are used to pull the cylinder. The device detects the required expansion size and automatically stops operation upon reaching the target position, ensuring consistent vacuum levels each time. Before entering the cylinder, the gas passes through a gas cup for filtration and separation, further removing impurities. A molecular sieve is also incorporated to remove moisture and other gaseous impurities from the air, producing dry, pure gas suitable for fault gas analysis; it also powers the solenoid valve module. This invention employs multiple different types of solenoid valves to control the entire degassing process; the solenoid valves have a fast response speed and can quickly perform corresponding actions.

[0032] Example 1

[0033] like Figures 1-4 As shown, a vacuum degassing device includes a support plate 1, an oil cylinder 2, an air cylinder 3, a molecular sieve 4, a first U-shaped plate 5, a second U-shaped plate 14, a first oil-gas control unit, a second oil-gas control unit, and an oil supply unit. The oil cylinder 2, air cylinder 3, molecular sieve 4, first U-shaped plate 5, second U-shaped plate 14, and oil supply unit are all mounted on the support plate 1. The first oil-gas control unit is mounted on the first U-shaped plate 5, and the second oil-gas control unit is mounted on the second U-shaped plate 14. The first oil-gas control unit and the second oil-gas control unit are respectively connected to the oil cylinder 2 and / or the air cylinder 3. The oil supply unit is connected to the second oil-gas control unit, and the molecular sieve 4 is connected to the first oil-gas control unit.

[0034] The first oil and gas control unit includes a solenoid valve module 6, which is mounted on the first U-shaped plate 5 and is connected to the oil cylinder 2 and the air cylinder 3 respectively.

[0035] The first oil and gas control unit includes a first connecting pipe 24, a second connecting pipe 25, a third connecting pipe 26 and a fourth connecting pipe 27, and the solenoid valve module 6 includes a first solenoid valve 7, a second solenoid valve 8, a third solenoid valve 9 and a fourth solenoid valve 10.

[0036] The first solenoid valve 7 is connected to the oil cylinder 2 through the first connecting pipe 24, the second solenoid valve 8 is connected to the oil cylinder 2 through the second connecting pipe 25, the third solenoid valve 9 is connected to the cylinder 3 through the third connecting pipe 26, and the fourth solenoid valve 10 is connected to the cylinder 3 through the fourth connecting pipe 27.

[0037] In this embodiment, a first connecting pipe 24 is connected and fixed to the first solenoid valve 7, and the end of the first connecting pipe 24 is connected and fixed to the oil cylinder 2. A second connecting pipe 25 is connected and fixed to the second solenoid valve 8, and the end of the second connecting pipe 25 is connected and fixed to the oil cylinder 2. A third connecting pipe 26 is connected and fixed to the third solenoid valve 9, and the end of the third connecting pipe 26 is connected and fixed to the cylinder 3. A fourth connecting pipe 27 is connected and fixed to the fourth solenoid valve 10, and the end of the fourth connecting pipe 27 is connected and fixed to the cylinder 3.

[0038] The first oil and gas control unit also includes a fifth connecting pipe 28, through which the solenoid valve module 6 is connected to the molecular sieve 4.

[0039] In this embodiment, a fifth connecting pipe 28 is connected and fixed on one side of the solenoid valve module 6. The end of the fifth connecting pipe 28 is connected and fixed to the molecular sieve 4. The molecular sieve 4 serves as a filter.

[0040] The first oil and gas control unit also includes a flow regulating valve 13, a fifth solenoid valve 12, and a pressure regulating valve 11. The flow regulating valve 13, the fifth solenoid valve 12, and the pressure regulating valve 11 are all mounted on the first U-shaped plate 5. The fifth solenoid valve 12 and the pressure regulating valve 11 are connected, and the flow regulating valve 13 is connected to both the fifth solenoid valve 12 and the molecular sieve 4. That is, the flow regulating valve 13, the fifth solenoid valve 12, and the pressure regulating valve 11 are sequentially connected.

[0041] The device also includes a metering valve, which is connected to both the cylinder 3 and the pressure regulating valve 11. Additionally, it includes a cylinder cleaning valve 18, to which the metering valve is also connected.

[0042] In this embodiment, a hydraulic cylinder 2, a pneumatic cylinder 3, a first U-shaped plate 5, and a second U-shaped plate 14 are fixedly connected to a support plate 1. The first U-shaped plate 5 and the second U-shaped plate 14 are located above the hydraulic cylinder 2 and the pneumatic cylinder 3. The top of the first U-shaped plate 5 is provided with a solenoid valve module 6, a pressure regulating valve 13, a fifth solenoid valve 12, a flow regulating valve 11, and a cylinder cleaning valve 18. The top of the solenoid valve module 6 is provided with a first solenoid valve 7, a second solenoid valve 8, a third solenoid valve 9, and a fourth solenoid valve 10. The top of the second U-shaped plate 14 is provided with an air cup 15, a solenoid valve 16, a solenoid valve 17, a solenoid valve 19, and a solenoid valve 20.

[0043] A molecular sieve 4 is provided on the right side of the support plate 1. The gas inlet of the molecular sieve 4 is connected to the air pump. After the air pump works, it generates a certain pressure air. The air flows through the molecular sieve 4, removing moisture and other gas impurities from the air, and becomes a dry and pure gas that can be used for fault gas analysis (i.e., the airflow passes through the molecular sieve 4, the flow stabilizing valve 13 and the fifth solenoid valve 12 in sequence). At the same time, another gas outlet of the molecular sieve 4 is connected to the vacuum control solenoid valve group 6 of the oil cylinder 2 and the air cylinder 3, which serves as the power source for the first solenoid valve 7, the second solenoid valve 8, the third solenoid valve 9 and the fourth solenoid valve 10.

[0044] The metering valve of this invention includes multiple ports, which are connected to a flow stabilizing valve 13, a pressure stabilizing valve 11, a cylinder cleaning valve 18, and a cylinder 3. Port 1 of the metering valve serves as the carrier gas inlet and is connected to the flow stabilizing valve 13. The cylinder cleaning valve port of the metering valve is connected to the cylinder cleaning valve 18. The specific flow path is as follows: The fifth solenoid valve 12 opens, and the gas, after being stabilized by the flow stabilizing valve 13, flows into port 1 of the metering valve, providing a stable flow of carrier gas for gas analysis and detection. The outlet 1 of the pressure stabilizing valve 11 is connected to the cylinder cleaning valve 18 via a pipeline. The gas stabilized by the pressure stabilizing valve 11 is connected to the inlet of the cylinder cleaning valve 18, and the outlet of the cylinder cleaning valve 18 is connected to port 2 of the metering valve, serving as the cleaning gas.

[0045] The second oil and gas control unit includes a gas cup 15, a sixth solenoid valve 16, a seventh solenoid valve 17, and an eighth connecting pipe 31. The gas cup 15, the sixth solenoid valve 16, and the seventh solenoid valve 17 are all mounted on the second U-shaped plate 14. The sixth solenoid valve 16 is connected to the oil cylinder 2, and the gas cup 15 is connected to the seventh solenoid valve 17 through the eighth connecting pipe 31.

[0046] In this embodiment, the seventh solenoid valve 17 is connected to and fixed with the air cup 15 via an eighth connecting pipe 31, the oil cup 22 is connected to and fixed with the eleventh solenoid valve 21, the sixth solenoid valve 16 is connected to and fixed with the oil cylinder 2, and the oil cup 22 serves as a storage device.

[0047] The second oil and gas control unit also includes a ninth solenoid valve 19, a tenth solenoid valve 20, a sixth connecting pipe 29 and a seventh connecting pipe 30, wherein the ninth solenoid valve 19 and the tenth solenoid valve 20 are both installed on the second U-shaped plate 14;

[0048] The ninth solenoid valve 19 and the tenth solenoid valve 20 are connected to the cylinder 3 through the sixth connecting pipe 29, and the air cup 15 is connected to the ninth solenoid valve 19 through the seventh connecting pipe 30.

[0049] In this embodiment, a sixth connecting pipe 29 is connected and fixed to the ninth solenoid valve 19 and the tenth solenoid valve 20. The sixth connecting pipe 29 is connected and fixed to the cylinder 3. A seventh connecting pipe 30 is connected and fixed to the air cup 15. The seventh connecting pipe 30 is connected and fixed to the ninth solenoid valve 19.

[0050] The oil supply unit includes an eighth solenoid valve 23, an eleventh solenoid valve 21, and an oil cup 22. The eighth solenoid valve 23, the eleventh solenoid valve 21, and the oil cup 22 are all mounted on the support plate 1. The eleventh solenoid valve 21, the oil cup 22, and the eighth solenoid valve 23 are connected in sequence. The sixth solenoid valve 16 and the seventh solenoid valve 17 are both connected to the oil cup 22.

[0051] In this embodiment, the support plate 1 is also provided with an eighth solenoid valve 23. The eighth solenoid valve 23 is an oil sample discharge valve. After the oil-gas separation is completed, the degassed oil sample opens the eighth solenoid valve 23 and the sixth solenoid valve 16, and closes the seventh solenoid valve 17. The oil cylinder is pushed forward, and the oil is pushed out of the oil cylinder 2 and discharged back into the transformer through the sixth solenoid valve 16 and the eighth solenoid valve 23.

[0052] The support plate 1 is also equipped with an eleventh solenoid valve 21 and an oil cup 22. An eighth solenoid valve 23 is connected and fixed on one side of the oil cup 22. The eleventh solenoid valve 21 is connected to an external oil pump. After the start command is given, the air circuit cleaning of cylinder 3 begins. After the cleaning cycle is completed, the oil cylinder 2 and cylinder 3 are simultaneously vacuumed.

[0053] The device also includes an air pump and an oil pump. The oil pump is connected to the eleventh solenoid valve 21, and the air pump is connected to the molecular sieve 4. These are used for supplying air and oil, respectively.

[0054] In this embodiment, a cylinder cleaning valve 18 is also provided on the first U-shaped plate 5. The cylinder cleaning valve 18 is connected to the cleaning port of the metering valve, and the cylinder 3 is cleaned from the cleaning port of the metering valve. That is, the inlet of the cylinder cleaning valve 18 is connected to the pressure stabilizing valve 11, and the outlet of the cylinder cleaning valve 18 is connected to the cleaning port of the metering valve.

[0055] Working principle:

[0056] When in use, the eleventh solenoid valve 21 is connected to an external oil pump. Before the oil pump supplies oil to the oil cup 22, the eleventh solenoid valve 21 and the eighth solenoid valve 23 are opened, and the sixth solenoid valve 16 and the seventh solenoid valve 17 are closed. The oil sample circulates to the oil cup 22 through the connecting pipeline. When the oil cup 22 is full of oil, the eleventh solenoid valve 21 and the eighth solenoid valve 23 are closed.

[0057] At the same time, after the start of work command, the air circuit cleaning of cylinder 3 begins. After the cleaning cycle is completed, the oil cylinder 2 and cylinder 3 are evacuated. The evacuation process is as follows: first, the first solenoid valve 7 and the fourth solenoid valve 10 are opened, and the second solenoid valve 8 and the third solenoid valve 9 are closed, so that the oil cylinder 2 and cylinder 3 are in the evacuation state.

[0058] After the oil cylinder 2 and air cylinder 3 have completed the vacuuming, the sixth solenoid valve 16 is opened. Due to the pressure difference, the oil in the oil cup 22 will enter the oil cylinder 2 for oil-gas separation. After a 1-minute delay, the seventh solenoid valve 17 is opened. After a 3-second delay, the ninth solenoid valve 19 is opened. The separated gas will be filtered through the air cup 15 and then enter the air cylinder 3 (the gas passes through the seventh solenoid valve 17, air cup 15, ninth solenoid valve 19, and sixth connecting pipe 29 in sequence before entering the air cylinder 3). Finally, the oil cylinder 2 is closed, and the first solenoid valve 7, the seventh solenoid valve 17, and the ninth solenoid valve 19 are closed, and the sample gas collection process begins.

[0059] Close the fourth solenoid valve 10 and the first solenoid valve 7, and open the second solenoid valve 8 and the eighth solenoid valve 23 to send the oil sample back to the transformer. After a 3-second delay, close the eighth solenoid valve 23. Open the third solenoid valve 9, and close all other valves. The sample gas is pushed into the metering valve by the cylinder 3. The cylinder 3 and the metering valve are connected (i.e., the gas is connected to the sample gas inlet 3 of the metering valve), completing the degassing process.

[0060] This invention employs a fully mechanical vacuum system. Hydraulic cylinder 2 and pneumatic cylinder 3 create the vacuum level, ensuring consistent push-pull strokes each time, thus guaranteeing a consistent vacuum pressure. The vacuum is also created by the cylinder's pull mechanism, utilizing magnetic limit switches. As long as the extension lengths of hydraulic cylinder 2 and pneumatic cylinder 3 are consistent, the consistent vacuum level can be guaranteed each time. Furthermore, a gas balancing device of the same volume is installed to accommodate the required gas extraction from an oil sample.

[0061] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A vacuum degassing device, characterized in that, The system includes a support plate (1), an oil cylinder (2), a pneumatic cylinder (3), a molecular sieve (4), a first U-shaped plate (5), a second U-shaped plate (14), a first oil-gas control unit, a second oil-gas control unit, and an oil supply unit. The oil cylinder (2), the pneumatic cylinder (3), the molecular sieve (4), the first U-shaped plate (5), the second U-shaped plate (14), and the oil supply unit are all mounted on the support plate (1). The first oil-gas control unit is mounted on the first U-shaped plate (5), and the second oil-gas control unit is mounted on the second U-shaped plate (14). The first oil-gas control unit and the second oil-gas control unit are respectively connected to the oil cylinder (2) and / or the pneumatic cylinder (3). The oil supply unit is connected to the second oil-gas control unit, and the molecular sieve (4) is connected to the first oil-gas control unit.

2. The vacuum degassing device according to claim 1, characterized in that, The first oil and gas control unit includes a solenoid valve module (6), which is mounted on the first U-shaped plate (5) and is connected to the oil cylinder (2) and the air cylinder (3) respectively.

3. The vacuum degassing device according to claim 2, characterized in that, The first oil and gas control unit includes a first connecting pipe (24), a second connecting pipe (25), a third connecting pipe (26) and a fourth connecting pipe (27), and the solenoid valve module (6) includes a first solenoid valve (7), a second solenoid valve (8), a third solenoid valve (9) and a fourth solenoid valve (10); The first solenoid valve (7) is connected to the oil cylinder (2) through the first connecting pipe (24), the second solenoid valve (8) is connected to the oil cylinder (2) through the second connecting pipe (25), the third solenoid valve (9) is connected to the cylinder (3) through the third connecting pipe (26), and the fourth solenoid valve (10) is connected to the cylinder (3) through the fourth connecting pipe (27).

4. The vacuum degassing device according to claim 3, characterized in that, The first oil and gas control unit also includes a fifth connecting pipe (28), and the solenoid valve module (6) is connected to the molecular sieve (4) through the fifth connecting pipe (28).

5. A vacuum degassing device according to claim 2, characterized in that, The first oil and gas control unit also includes a flow stabilizing valve (13), a fifth solenoid valve (12), and a pressure stabilizing valve (11). The flow stabilizing valve (13), the fifth solenoid valve (12), and the pressure stabilizing valve (11) are all installed on the first U-shaped plate (5). The fifth solenoid valve (12) and the pressure stabilizing valve (11) are connected. The flow stabilizing valve (13) is connected to the fifth solenoid valve (12) and the molecular sieve (4) respectively.

6. The vacuum degassing device according to claim 5, characterized in that, The device also includes a metering valve, which is connected to the cylinder (3) and the pressure regulating valve (11) respectively.

7. The vacuum degassing device according to claim 1, characterized in that, The second oil and gas control unit includes a gas cup (15), a sixth solenoid valve (16), a seventh solenoid valve (17), and an eighth connecting pipe (31). The gas cup (15), the sixth solenoid valve (16), and the seventh solenoid valve (17) are all mounted on the second U-shaped plate (14). The sixth solenoid valve (16) is connected to the oil cylinder (2), and the gas cup (15) is connected to the seventh solenoid valve (17) through the eighth connecting pipe (31).

8. The vacuum degassing device according to claim 7, characterized in that, The second oil and gas control unit also includes a ninth solenoid valve (19), a tenth solenoid valve (20), a sixth connecting pipe (29) and a seventh connecting pipe (30), wherein the ninth solenoid valve (19) and the tenth solenoid valve (20) are both installed on the second U-shaped plate (14); The ninth solenoid valve (19) and the tenth solenoid valve (20) are connected to the cylinder (3) through the sixth connecting pipe (29), and the air cup (15) is connected to the ninth solenoid valve (19) through the seventh connecting pipe (30).

9. A vacuum degassing device according to claim 8, characterized in that, The oil supply unit includes an eighth solenoid valve (23), an eleventh solenoid valve (21), and an oil cup (22). The eighth solenoid valve (23), the eleventh solenoid valve (21), and the oil cup (22) are all mounted on the support plate (1). The eleventh solenoid valve (21), the oil cup (22), and the eighth solenoid valve (23) are connected in sequence. The sixth solenoid valve (16) and the seventh solenoid valve (17) are respectively connected to the oil cup (22).

10. A vacuum degassing device according to claim 9, characterized in that, The device also includes an air pump and an oil pump, the oil pump being connected to the eleventh solenoid valve (21) and the air pump being connected to the molecular sieve (4).

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