Gas-liquid separation device for oxygen production

Abstract

The utility model discloses a gas -liquid separation device for oxygen production, including installation base, installation base top fixed setting has the support stand, support stand top fixed setting has the gas -liquid separation tank, the inside fixed setting of gas -liquid separation tank has the mounting panel, the mounting panel top fixed setting has the separation umbrella board, the gas -liquid separation tank upper side wall fixed setting has temperature sensor, the gas -liquid separation tank surface is provided with rotary scraping assembly, through rotary scraping assembly to the liquid air of separation umbrella board surface adhesion falls, make liquid air not adhesion in separation umbrella board surface to avoid liquid air on the umbrella board surface form film or small droplet adhesion, cannot fast, completely drip the condition, and avoid the adhesion on separation umbrella board formation liquid membrane, can block the gas of evaporation rise, cause the oxygen of discharge easy to be doped nitrogen situation.

Description

Technical Field

[0001] This utility model relates to the field of oxygen production technology, and in particular to a gas-liquid separation device for oxygen production. Background Technology

[0002] During oxygen production, air needs to be filtered and pressurized at low temperatures to turn it into liquid air. Then, a gas-liquid separator is used to separate the liquid air. Since the boiling point of liquid nitrogen is lower than that of liquid oxygen, nitrogen evaporates from the liquid air first, leaving liquid oxygen, which is then discharged.

[0003] In the prior art, application number CN202420685159.0 proposes a gas-liquid separation device for oxygen production. This device uses a gas-liquid separation cylinder to separate liquid air. A first and second separation umbrella plate inside the cylinder allow liquid air to condense and flow downwards. An annular electric heating tube and a heat-conducting plate heat the liquid air inside the cylinder, causing nitrogen and oxygen to separate and flow upwards, facilitating their separation and discharge, thus improving the separation effect and speed of the gas-liquid separation.

[0004] However, when liquid air enters the gas-liquid separator and comes into contact with the second separation umbrella plate, the liquid air adhering to the surface of the separation umbrella plate flows downward. However, liquid air has a certain viscosity and easily forms a thin film or small droplets on the surface of the umbrella plate, making it impossible to drip down quickly and completely. As a result, some liquid air cannot quickly enter the bottom of the gas-liquid separator and easily adheres to the separation umbrella plate to form a liquid film, which will block the evaporated and rising gas, causing nitrogen to easily mix into the discharged oxygen. Based on the above problems, this application proposes a gas-liquid separation device for oxygen production. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a gas-liquid separation device for oxygen production, which solves the aforementioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A gas-liquid separation device for oxygen production includes a mounting base, a supporting column fixedly mounted on the top of the mounting base, a gas-liquid separation tank fixedly mounted on the top of the supporting column, an installation plate fixedly mounted inside the gas-liquid separation tank, a separation umbrella plate fixedly mounted on the top of the installation plate, a temperature sensor fixedly mounted on the upper side wall of the gas-liquid separation tank, a rotating scraping assembly mounted on the surface of the gas-liquid separation tank, and a heating assembly fixedly mounted on the surface of the gas-liquid separation tank.

[0008] Preferably, the rotary scraping assembly includes a fixed bracket fixedly installed on the top of the gas-liquid separator. A drive motor is fixedly installed on the top of the fixed bracket. A coupling is fixedly installed at the output end of the drive motor. A rotating shaft is installed at the output end of the drive motor through the coupling. An mounting collar is fixedly installed on the surface of the rotating shaft. A connecting plate is fixedly installed on the outer surface of the mounting collar. A scraping plate is fixedly installed on the top of the connecting plate.

[0009] Preferably, the scraping plate is in contact with the separating umbrella plate, and the scraping plate is made of ultra-high molecular weight polyethylene.

[0010] Preferably, there are two mounting plates and two separating umbrella plates, and the two mounting plates and two separating umbrella plates are arranged in a linear array. The mounting plates have a ring-shaped structure, and the separating umbrella plates have a cone-shaped structure.

[0011] Preferably, the heating assembly includes an isolation cover fixedly installed on the surface of the gas-liquid separator, an insulation layer fixedly disposed inside the isolation cover, a heating tube disposed inside the insulation layer, and the heating tube being fixedly connected to the gas-liquid separator.

[0012] Preferably, the heating tube has a spiral structure and is made of copper.

[0013] Preferably, a liquid air inlet pipe is fixedly installed on the left side of the gas-liquid separator, and a nitrogen outlet pipe and an oxygen outlet pipe are fixedly installed on the right side of the gas-liquid separator. The nitrogen outlet pipe is located above the oxygen outlet pipe, and a discharge pipe is fixedly installed at the bottom of the gas-liquid separator. A connecting flange is fixedly installed at the inlet end of the liquid air inlet pipe, the outlet end of the nitrogen outlet pipe, the outlet end of the oxygen outlet pipe, and the outlet end of the discharge pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: In this gas-liquid separation device for oxygen production, when liquid air enters the gas-liquid separation tank and comes into contact with the separation umbrella plate, it then enters the bottom of the gas-liquid separation tank. At the same time, the rotating scraping component scrapes off the liquid air adhering to the surface of the separation umbrella plate, so that the liquid air will not adhere to the surface of the separation umbrella plate. This avoids the situation where liquid air forms a thin film or small droplets on the surface of the umbrella plate and cannot drip off quickly and completely. Moreover, it avoids the situation where a liquid film adhering to the separation umbrella plate would block the evaporated and rising gas, causing nitrogen to easily mix into the discharged oxygen. Attached Figure Description

[0015] Figure 1 This is an isometric drawing of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0017] Figure 3 This is a right sectional view of the structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the rotating scraping component of this utility model.

[0019] In the diagram: 1. Mounting base; 2. Support column; 3. Gas-liquid separator; 4. Separation umbrella plate; 5. Fixing bracket; 6. Drive motor; 7. Coupling; 8. Rotating shaft; 9. Mounting collar; 10. Connecting plate; 11. Scraper plate; 12. Isolation cover; 13. Heat insulation layer; 14. Heating tube; 15. Liquid air inlet pipe; 16. Nitrogen outlet pipe; 17. Oxygen outlet pipe; 18. Discharge pipe; 19. Connecting flange; 20. Temperature sensor; 21. Mounting plate. Detailed Implementation

[0020] 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 embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: Refer to Figure 1-4A gas-liquid separation device for oxygen production includes a mounting base 1, a supporting column 2 fixedly mounted on the top of the mounting base 1, a gas-liquid separation tank 3 fixedly mounted on the top of the supporting column 2, a mounting plate 21 fixedly mounted inside the gas-liquid separation tank 3, and a separation umbrella plate 4 fixedly mounted on the top of the mounting plate 21. There are two mounting plates 21 and two separation umbrella plates 4, arranged in a linear array. The mounting plate 21 has a ring-shaped structure, and the separation umbrella plate 4 has a conical structure. A temperature sensor 20 is fixedly mounted on the upper side wall of the gas-liquid separation tank 3. A rotating scraping assembly and a heating assembly are fixedly mounted on the surface of the gas-liquid separation tank 3. The rotating scraping assembly includes a fixed bracket 5 fixedly mounted on the top of the gas-liquid separation tank 3, and a drive motor is fixedly mounted on the top of the fixed bracket 5. 6. A coupling 7 is fixedly installed at the output end of the drive motor 6. A rotating shaft 8 is installed at the output end of the drive motor 6 through the coupling 7. An mounting collar 9 is fixedly installed on the surface of the rotating shaft 8. A connecting plate 10 is fixedly installed on the outer surface of the mounting collar 9. A scraper 11 is fixedly installed on the top of the connecting plate 10. Liquid air enters the interior of the gas-liquid separator 3 and flows downward through the separation umbrella plate 4 below, so that the liquid air enters the bottom of the gas-liquid separator 3. The drive motor 6 drives the coupling 7 to drive the rotating shaft 8 to rotate, which in turn drives the mounting collar 9 to rotate. The mounting collar 9 drives the scraper 11 to move on the surface of the separation umbrella plate 4 through the rotation of the connecting plate 10, so that the scraper 11 scrapes off the liquid air attached to the surface of the separation umbrella plate 4. The scraped liquid air falls to the bottom of the gas-liquid separator 3 and mixes with the previously entered liquid air.

[0022] Specifically, the scraper 11 contacts the separating umbrella plate 4. The scraper 11 is made of ultra-high molecular weight polyethylene. The scraper 11 made of ultra-high molecular weight polyethylene has good self-lubricating properties, and makes the surface of the scraper 11 smooth with a low coefficient of friction. This reduces energy loss during operation and prevents impurities from adhering, ensuring smooth operation of the scraper 11. In addition, ultra-high molecular weight polyethylene has excellent chemical corrosion resistance and can withstand the erosion of various chemicals.

[0023] Specifically, the heating assembly includes an isolation cover 12 fixedly installed on the surface of the gas-liquid separator 3. An insulation layer 13 is fixedly installed inside the isolation cover 12, and a heating tube 14 is installed inside the insulation layer 13. The heating tube 14 is fixedly connected to the gas-liquid separator 3. The heating tube 14 has a spiral structure and is made of copper. The heating tube 14 is activated by an external controller, which heats the gas-liquid separator 3. The heat is transferred to the liquid air inside the gas-liquid separator 3, causing the liquid to boil and the liquid air to quickly reach the boiling point for separation. The temperature of the gas-liquid separation is detected by a temperature sensor 20 to keep the heating temperature within a suitable range. Since the boiling point of liquid nitrogen is lower than that of liquid oxygen, nitrogen first evaporates from the liquid air and is discharged into the external collection device through the nitrogen outlet pipe 16. Subsequently, oxygen is discharged into the external collection device through the oxygen outlet pipe 17.

[0024] Specifically, a liquid air inlet pipe 15 is fixedly installed on the left side of the gas-liquid separator 3, and a nitrogen outlet pipe 16 and an oxygen outlet pipe 17 are fixedly installed on the right side of the gas-liquid separator 3. The nitrogen outlet pipe 16 is located above the oxygen outlet pipe 17. A discharge pipe 18 is fixedly installed at the bottom of the gas-liquid separator 3. A connecting flange 19 is fixedly installed at the inlet end of the liquid air inlet pipe 15, the outlet end of the nitrogen outlet pipe 16, the outlet end of the oxygen outlet pipe 17, and the outlet end of the discharge pipe 18. Liquid air can easily enter the interior of the gas-liquid separator 3 through the liquid air inlet pipe 15, nitrogen and oxygen can easily be discharged from the gas-liquid separator 3 through the nitrogen outlet pipe 16 and the oxygen outlet pipe 17, and excess liquid air can be discharged through the discharge pipe 18.

[0025] The gas-liquid separation device for oxygen production is connected to 220V mains power, and the main controller can be a conventional known device such as a computer for control.

[0026] In use: Connect the external liquid air delivery pipe to the connecting flange 19 on the liquid air inlet pipe 15 to deliver liquid air into the interior of the liquid air inlet pipe 15. The liquid air then enters the interior of the gas-liquid separator 3 through the liquid air inlet pipe 15 and flows downward through the lower separation umbrella plate 4, allowing the liquid air to enter the bottom of the gas-liquid separator 3. At the same time, the external controller controls the drive motor 6 to drive the coupling 7 to rotate the rotating shaft 8, which in turn drives the mounting collar 9 to rotate. The mounting collar 9 drives the connecting plate 10 to rotate, causing the connecting plate 10 to drive the scraper plate 11 to rotate. This causes the scraper plate 11 to move on the surface of the separation umbrella plate 4, scraping off the liquid air adhering to the surface of the separation umbrella plate 4. The scraped-off liquid air falls to the bottom of the gas-liquid separator 3 and mixes with the previously entered liquid air.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas-liquid separation device for oxygen production, comprising a mounting base (1), characterized in that, The mounting base (1) is fixedly provided with a support column (2) on the top. The support column (2) is fixedly provided with a gas-liquid separator (3) on the top. The gas-liquid separator (3) is fixedly provided with an installation plate (21) inside. The installation plate (21) is fixedly provided with a separation umbrella plate (4) on the top. The gas-liquid separator (3) is fixedly provided with a temperature sensor (20) on the upper side wall. The gas-liquid separator (3) is provided with a rotating scraping assembly on the surface. The gas-liquid separator (3) is fixedly provided with a heating assembly on the surface.

2. The gas-liquid separation device for oxygen production according to claim 1, characterized in that, The rotary scraping assembly includes a fixed bracket (5) fixedly installed on the top of the gas-liquid separator (3). A drive motor (6) is fixedly installed on the top of the fixed bracket (5). A coupling (7) is fixedly installed at the output end of the drive motor (6). A rotating shaft (8) is installed at the output end of the drive motor (6) through the coupling (7). An installation collar (9) is fixedly installed on the surface of the rotating shaft (8). A connecting plate (10) is fixedly installed on the outer surface of the installation collar (9). A scraping plate (11) is fixedly installed on the top of the connecting plate (10).

3. The gas-liquid separation device for oxygen production according to claim 2, characterized in that, The scraping plate (11) is in contact with the separating umbrella plate (4), and the scraping plate (11) is made of ultra-high molecular weight polyethylene.

4. The gas-liquid separation device for oxygen production according to claim 1, characterized in that, The number of mounting plates (21) and separating umbrella plates (4) are both two, and the two mounting plates (21) and the two separating umbrella plates (4) are arranged in a linear array. The mounting plates (21) have a ring-shaped structure, and the separating umbrella plates (4) have a cone-shaped structure.

5. The gas-liquid separation device for oxygen production according to claim 1, characterized in that, The heating assembly includes an isolation cover (12) fixedly installed on the surface of the gas-liquid separator (3). A heat insulation layer (13) is fixedly installed inside the isolation cover (12). A heating pipe (14) is installed inside the heat insulation layer (13). The heating pipe (14) is fixedly connected to the gas-liquid separator (3).

6. The gas-liquid separation device for oxygen production according to claim 5, characterized in that, The heating tube (14) has a spiral structure and is made of copper.

7. The gas-liquid separation device for oxygen production according to claim 1, characterized in that, A liquid air inlet pipe (15) is fixedly installed on the left side of the gas-liquid separator (3), and a nitrogen outlet pipe (16) and an oxygen outlet pipe (17) are fixedly installed on the right side of the gas-liquid separator (3). The nitrogen outlet pipe (16) is located above the oxygen outlet pipe (17). A discharge pipe (18) is fixedly installed at the bottom of the gas-liquid separator (3). A connecting flange (19) is fixedly installed at the inlet end of the liquid air inlet pipe (15), the outlet end of the nitrogen outlet pipe (16), the outlet end of the oxygen outlet pipe (17), and the outlet end of the discharge pipe (18).

Images