A test device for oil and gas separators

Abstract

The application discloses a test device for oil-gas separators, which comprises a test tank, a tank cover, a lifting mechanism, an oil mist generating mechanism, a temperature adjusting mechanism and an oil content detector, the tank cover is installed on the lifting end of the lifting mechanism and is arranged opposite to the tank opening of the test tank, the tank cover is used to press the oil-gas separator tightly in the test tank, a temperature sensor is arranged on the tank cover, the tank cover and the oil-gas separator divide the inner cavity of the test tank into a pre-filtering cavity and a post-filtering cavity, the oil mist outlet of the oil mist generating mechanism is communicated with the pre-filtering cavity, the temperature adjusting mechanism is installed in the pre-filtering cavity, the sampling heads of the oil content detector are respectively communicated with the pre-filtering cavity and the post-filtering cavity, and the pre-filtering cavity and the post-filtering cavity are respectively provided with pressure sensors. The test device can be used for testing the oil mist filtering performance of oil-gas separators with various specifications, the oil-gas separator is convenient to disassemble and assemble during the test, various tests can be carried out on the oil-gas separator in the test tank under various environments, and the comprehensive test accuracy is improved.

Description

Technical Field

[0001] This invention relates to the technical field of oil-gas separator testing equipment, and in particular to a testing device for oil-gas separators. Background Technology

[0002] The oil-gas separator element (oil-gas separator) is a key component determining the quality of compressed air from an air compressor. Compressed air exiting the compressor head carries oil droplets of varying sizes. Large oil droplets are easily separated when passing through the oil-gas separator tank, while small oil droplets (suspended oil particles with a diameter of less than 1µm) must be filtered through the micron-sized and fiberglass filter media layer of the oil-gas separator filter element. Through diffusion by the filter media, direct interception by the filter media, and inertial collision agglomeration, the suspended oil particles in the compressed air quickly agglomerate into large oil droplets. Under gravity, the oil accumulates at the bottom of the oil separator element and returns to the compressor head lubrication system through the oil return pipe inlet at the bottom recess, thus allowing the compressor to discharge cleaner, oil-free compressed air. Solid particles in the compressed air remain trapped in the filter layer when passing through the oil separator element, leading to a continuous increase in the oil separator element's pressure differential (resistance). As the oil separator element's service life increases, when the oil separator element's pressure differential reaches 0.08 to 0.1 MPa, the filter element must be replaced; otherwise, it will increase the compressor's operating costs (power consumption). High-quality oil-gas separators not only ensure the high efficiency of the compressor, but also have a filter life of thousands of hours. Therefore, performance testing of oil-gas separators is crucial for product quality assurance.

[0003] In the prior art, Chinese invention patent publication number CN202011053036.8, entitled "A Test Device and Method for Oil Mist Filtration Efficiency of Commercial Vehicle Air Dryer," provides a method and system for testing the oil mist filtration performance of a dryer (containing filter media). This system allows for control and adjustment of the air dryer's inlet flow rate, pressure, temperature, and oil content according to test requirements, and real-time detection of the oil content in compressed air passing through the dryer's inlet and outlet to obtain accurate oil filtration efficiency and effectively verify the product's oil filtration performance. However, this invention is not applicable to testing the oil mist filtration performance of oil-gas separators. First, in the test, the dryer is a complete filtration device that can be directly installed and removed from the test system, while oil-gas separators cannot be directly tested and require a suitable oil mist environment. Second, this invention can only control the parameters of the oil mist gas and cannot control the environment of the tested product itself, thus the accuracy of the test results needs improvement. Finally, the invention has a limited testing scope and cannot simulate the product's usage environment for various tests. Summary of the Invention

[0004] The purpose of this invention is to provide a testing device for oil-gas separators, in order to solve the problems that the accuracy of traditional oil mist filtration testing devices needs to be improved and that they cannot simulate the product's usage environment for various tests, as well as the need to improve the accuracy of test results.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A test apparatus for an oil-gas separator includes a test tank, a tank cover, a lifting mechanism, an oil mist generating mechanism, a temperature regulating mechanism, and an oil content detector. The tank cover is installed on the lifting end of the lifting mechanism and is directly opposite the opening of the test tank. The tank cover presses a second oil-gas separator into the test tank, and a temperature sensor is installed on the tank cover. The tank cover and the second oil-gas separator divide the inner cavity of the test tank into a pre-filter chamber and a post-filter chamber. The oil mist outlet of the oil mist generating mechanism is connected to the pre-filter chamber. The temperature regulating mechanism is installed in the pre-filter chamber. The sampling head of the oil content detector is connected to both the pre-filter chamber and the post-filter chamber. Pressure sensors are installed on both the pre-filter chamber and the post-filter chamber.

[0006] A further technical solution is as follows: the lifting mechanism includes a cylinder, a guide column, and a crossbeam. The crossbeam is located above the test tank. The cylinder is vertically mounted on the crossbeam. The tank cover is horizontally mounted on the output end of the cylinder. The guide column is slidably mounted on the crossbeam, and the lower end of the guide column is connected to the tank cover.

[0007] A further technical solution is as follows: the oil mist generating mechanism includes an oil storage tank, an oil pump, a pressure stabilizing tank, an air pump, and a nozzle. The nozzle is installed in the pre-filter chamber. The oil outlet of the oil pump and the air outlet of the pressure stabilizing tank are connected to the feed end of the nozzle through a Y-shaped mixing pipe. The oil outlet of the oil storage tank is connected to the oil inlet of the oil pump, and the air outlet of the air pump is connected to the air inlet of the pressure stabilizing tank.

[0008] A further technical solution is: the temperature regulation mechanism includes a heating rod and a cooling rod, the heating rod and the cooling rod being slidably mounted on the test tank via a damping ring and located within the pre-filter chamber.

[0009] A further technical solution is that heat exchange tubes are provided inside both the heating rod and the cooling rod.

[0010] A further technical solution is that a sealing rubber ring is provided on the outer periphery of the can lid.

[0011] A further technical solution is that a rubber pad is provided on the inner bottom surface of the test tank.

[0012] A further technical solution is that the test tank is equipped with a first oil-gas separator that communicates with the filter chamber.

[0013] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: This invention proposes a testing device for oil-gas separators. This device can be used to test the oil mist filtration performance of oil-gas separators of various specifications, and the oil-gas separators are easy to disassemble and assemble during testing. In addition to adjusting the parameters of the oil mist, the device can also simulate various environments for the oil-gas separator in the test tank, and conduct multiple tests under different environments to improve the accuracy of the overall test. Moreover, the performance-related indicators and parameters during the test are easy to read, and the device can display the readings of the oil-gas separator before and after filtration, which are easy to compare and intuitive, ensuring the accuracy of subsequent calculations. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a test device for an oil-gas separator according to the present invention.

[0015] Figure 2 For the present invention Figure 1 A schematic diagram of the structure of the pilot test tank.

[0016] Reference numerals: 1. Test tank; 2. Tank cover; 3. Lifting mechanism; 31. Cylinder; 32. Guide column; 33. Crossbeam; 4. Oil mist generating mechanism; 41. Oil storage tank; 42. Oil pump; 43. Pressure stabilizing tank; 44. Air pump; 45. Nozzle; 5. Temperature regulating mechanism; 51. Heating rod; 52. Cooling rod; 6. Oil content detector; 7. Temperature sensor; 8. Pressure sensor; 9. Sealing rubber ring; 10. Rubber pad; 11. Pre-filter chamber; 12. Post-filter chamber; 13. Heat exchange tube; 14. First oil-gas separator; 15. Sampling head; 16. Y-type mixing tube; 17. Second oil-gas separator. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] Example 1: This implementation example Figure 1 and Figure 2 As shown, a test device for an oil-gas separator includes a test tank 1, a tank cover 2, a lifting mechanism 3, an oil mist generating mechanism 4, a temperature regulating mechanism 5, and an oil content detector 6. The tank cover 2 is installed on the lifting end of the lifting mechanism 3 and is positioned directly opposite the opening of the test tank 1. The tank cover 2 presses a second oil-gas separator 17 into the test tank 1, and a temperature sensor 7 is installed on the tank cover 2. The tank cover 2 and the second oil-gas separator 17 divide the inner cavity of the test tank 1 into a pre-filter chamber 11 and a post-filter chamber 12. The oil mist outlet of the oil mist generating mechanism 4 is connected to the pre-filter chamber 11. The temperature regulating mechanism 5 is installed in the pre-filter chamber 11. The sampling head 15 of the oil content detector 6 is connected to both the pre-filter chamber 11 and the post-filter chamber 12. Pressure sensors 8 are respectively installed on the pre-filter chamber 11 and the post-filter chamber 12.

[0024] The cavity of test tank 1 can be as large as possible to accommodate the installation of more specifications of second oil-gas separators 17; the oil content detector 6 is a commercially available testing instrument that can directly sample and obtain results. Through the lifting mechanism 3 and the tank cover 2, the second oil-gas separator 17 can be pressed and the test tank 1 can be sealed; the temperature regulation mechanism 5 changes the ambient temperature inside the test tank 1 to simulate various working environments of the second oil-gas separator 17, mainly comparing the effect of different ambient temperatures on the filtration performance of oil mist; the oil mist generating mechanism 4 provides various oil mist flow rates and air pressures, mainly controlling the test parameters of oil mist.

[0025] Preferably, the lifting mechanism 3 includes a cylinder 31, a guide column 32, and a crossbeam 33. The crossbeam 33 is located above the test tank 1. The cylinder 31 is vertically mounted on the crossbeam 33. The tank cover 2 is horizontally mounted on the output end of the cylinder 31. The guide column 32 is slidably mounted on the crossbeam 33, and the lower end of the guide column 32 is connected to the tank cover 2.

[0026] The telescopic end of cylinder 31 drives the can cover 2 to move up and down, so as to move away from and seal the test can 1.

[0027] Preferably, the oil mist generating mechanism 4 includes an oil storage tank 41, an oil pump 42, a pressure stabilizing tank 43, an air pump 44, and a nozzle 45. The nozzle 45 is installed in the pre-filter chamber 11. The oil outlet of the oil pump 42 and the air outlet of the pressure stabilizing tank 43 are connected to the feed end of the nozzle 45 through a Y-shaped mixing pipe 16. The oil outlet of the oil storage tank 41 is connected to the oil inlet of the oil pump 42, and the air outlet of the air pump 44 is connected to the air inlet of the pressure stabilizing tank 43.

[0028] Oil from storage tank 41 is pumped into Y-type mixing pipe 16 by oil pump 42. Air pump 44 fills pressure stabilizing tank 43 with compressed gas. Pressure stabilizing tank 43 provides stable pressure flow gas (Note: the output pressure of pressure stabilizing tank 43 can be adjusted). The flow gas enters Y-type mixing pipe 16 and mixes with oil. Under the action of nozzle 45, oil mist is produced.

[0029] Preferably, the temperature regulating mechanism 5 includes a heating rod 51 and a cooling rod 52, which are slidably mounted on the test tank 1 and located in the pre-filter chamber 11 via damping rings.

[0030] The heating rod 51 and the cooling rod 52 can be adjusted up and down inside the test tank 1 to meet the installation and testing of the second oil-gas separator 17 of different specifications.

[0031] Preferably, both the heating rod 51 and the cooling rod 52 are provided with heat exchange tubes 13.

[0032] The heat exchange tube 13 is connected to the flowing medium of external refrigeration or heating equipment, such as heat transfer oil and refrigerant.

[0033] Preferably, a sealing rubber ring 9 is provided on the outer periphery of the can lid 2. A rubber pad 10 is provided on the inner bottom surface of the test can 1.

[0034] The second oil-gas separator 17 is sealed with two layers of seals, one at the top and one at the bottom, to improve the sealing performance of the test chamber, thus ensuring the accuracy of the test.

[0035] Preferably, the test tank 1 is provided with a first oil-gas separator 14 that communicates with the filter chamber 12.

[0036] The main purpose of filtering out the oil mist gas discharged after the test is to recover and protect the environment.

[0037] The working process of this invention is as follows: First, the cylinder 31 lifts the tank cover 2. The worker places the second oil-gas separator 17 into the test tank 1 according to the experimental requirements. Then, the tank cover 2 is lowered to press the second oil-gas separator 17 into the test tank 1, forming a test chamber between the tank cover 2 and the test tank 1. The second oil-gas separator 17 further divides the test chamber into a pre-filter chamber 11 and a post-filter chamber 12. The oil mist generating mechanism 4 supplies air and oil to the nozzle 45 through the oil pump 42 and the pressure stabilizing tank 43. Under the action of the nozzle 45, the oil mist in the post-filter chamber 12 (cleaner) is released. Oil mist is formed in the inner cavity of the second oil-gas separator 17. Under air pressure, the air carries the oil mist and passes through the second oil-gas separator 17. The second oil-gas separator 17 will block some of the oil mist. The sampling head 15 of the oil content detector 6 is used to detect the oil mist content in the pre-filter cavity 11 and the post-filter cavity 12 respectively to obtain the oil mist filtration performance. The temperature sensor 7 obtains the temperature of the test cavity, and the pressure sensor 8 also obtains the pressure values ​​of the pre-filter cavity 11 and the post-filter cavity 12. The filtration performance of the second oil-gas separator 17 is calculated by combining the results.

[0038] Furthermore, after a test is completed, the experimental temperature of the test chamber is adjusted by the heating rod 51 and cooling rod 52 of the temperature regulation mechanism 5 to simulate a new test environment. The test is then repeated using the controlled variable method to obtain more sets of test data. Then, the filtration performance (oil-gas separation) of the second oil-gas separator 17 under various variables is calculated separately. The comprehensive comparison yields more accurate results.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A test apparatus for an oil-gas separator, characterized in that: The test tank (1), the lid (2), the lifting mechanism (3), the oil mist generating mechanism (4), the temperature regulating mechanism (5), and the oil content detector (6) are included. The lid (2) is installed on the lifting end of the lifting mechanism (3) and is positioned directly opposite the opening of the test tank (1). The lid (2) presses the second oil-gas separator (17) into the test tank (1), and a temperature sensor (7) is provided on the lid (2). The lid (2) and the second oil-gas separator are connected. (17) The inner cavity of the test tank (1) is divided into a pre-filter chamber (11) and a post-filter chamber (12). The oil mist outlet of the oil mist generating mechanism (4) is connected to the pre-filter chamber (11). The temperature regulating mechanism (5) is installed in the pre-filter chamber (11). The sampling head (15) of the oil content detector (6) is connected to the pre-filter chamber (11) and the post-filter chamber (12) respectively. Pressure sensors (8) are respectively installed on the pre-filter chamber (11) and the post-filter chamber (12).

2. The test apparatus for an oil-gas separator according to claim 1, characterized in that: The lifting mechanism (3) includes a cylinder (31), a guide column (32) and a crossbeam (33). The crossbeam (33) is located above the test tank (1). The cylinder (31) is vertically mounted on the crossbeam (33). The tank cover (2) is horizontally mounted on the output end of the cylinder (31). The guide column (32) is slidably mounted on the crossbeam (33), and the lower end of the guide column (32) is connected to the tank cover (2).

3. The test apparatus for an oil-gas separator according to claim 1, characterized in that: The oil mist generating mechanism (4) includes an oil storage tank (41), an oil pump (42), a pressure stabilizing tank (43), an air pump (44), and a nozzle (45). The nozzle (45) is installed in the pre-filter chamber (11). The oil outlet of the oil pump (42) and the air outlet of the pressure stabilizing tank (43) are connected to the feed end of the nozzle (45) through a Y-shaped mixing pipe (16). The oil outlet of the oil storage tank (41) is connected to the oil inlet of the oil pump (42), and the air outlet of the air pump (44) is connected to the air inlet of the pressure stabilizing tank (43).

4. The test apparatus for an oil-gas separator according to claim 1, characterized in that: The temperature regulating mechanism (5) includes a heating rod (51) and a cooling rod (52), which are slidably mounted on the test tank (1) and located in the pre-filter chamber (11) via damping rings.

5. The test apparatus for an oil-gas separator according to claim 4, characterized in that: Both the heating rod (51) and the cooling rod (52) are equipped with heat exchange tubes (13).

6. The test apparatus for an oil-gas separator according to claim 1, characterized in that: A sealing rubber ring (9) is provided on the outer periphery of the can lid (2).

7. The test apparatus for an oil-gas separator according to claim 1, characterized in that: A rubber pad (10) is provided on the inner bottom surface of the test tank (1).

8. The test apparatus for an oil-gas separator according to claim 1, characterized in that: The test tank (1) is equipped with a first oil-gas separator (14) that communicates with the filter chamber (12).

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