Device for testing aging of lubricating oil in pressure environment

Abstract

The invention discloses a lubricating oil aging test device in a pressure environment, which belongs to the technical field of lubricating oil detection and comprises a gas input module, a gas pressure control execution module, a heating control execution module, a gas flow control execution module, a measurement feedback and control module and a condensation recovery module. The device belongs to an open system and can be used for researching the aging behavior of lubricating oil in a certain pressure environment, the aging of the lubricating oil often relates to oxidizing atmospheres such as oxygen and air and is accompanied with the discharge of oxidized volatile matters, and the device can effectively control the pressure and flow of the oxidizing atmospheres and has a lubricating oil volatile matter collecting function; the research on the aging mechanism of the lubricating oil and the additive thereof in the pressure environment is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of lubricating oil testing, in particular to a testing device for lubricating oil aging under pressure environment. Background Art

[0002] The lubricating oil aging test device is a device used to simulate long-term use and aging processes. It can be used to evaluate the performance degradation of lubricating oil under different working conditions and to estimate its service life. The lubricating oil aging test device can simulate the aging process under different working conditions by controlling the aging conditions. Common methods include atmospheric pressure oven aging, closed system aging, etc.

[0003] Traditional lubricating oil aging devices are usually used in closed environments and cannot be used in open gas environments. The test devices only involve high temperature, oxidation and other processes, and have not yet considered the impact of open systems in pressure oxidizing atmospheres on lubricating oil aging. They are also unable to effectively collect volatiles in the lubricating oil aging process and are unable to provide a comprehensive assessment of lubricating oil aging. Traditional lubricating oil aging devices generally use test benches such as hot ovens, which are suitable for simple aging tests. The device of the present invention uses a set of systematic and modular equipment, which is suitable for simulating more complex usage environments and working conditions.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a testing device for lubricating oil aging under pressure environment to solve the technical defects proposed by the background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: a test device for lubricating oil aging under pressure environment, comprising a gas input module, wherein the gas input module is communicatively connected with a gas pressure control execution module, a heating control execution module, a gas flow control execution module, a measurement feedback module, a control module and a condensation recovery module;

[0007] The gas input module includes a gas storage tank, a pressure reducing valve and a drying tube, the gas pressure control execution module includes a pressure control valve, an electromagnetic ball valve and an electric actuator, and the electromagnetic ball valve is connected to the drying tube through the pressure control valve, the heating control execution module includes a heating device and a high-pressure reactor, and the high-pressure reactor is connected to the gas input pipeline 2.

[0008] The gas flow control execution module includes a flow control valve, the measurement feedback module includes a gas pressure sensor, a temperature sensor and an electronic flow meter, and the gas pressure sensor is connected to the high-pressure reactor, the control module includes a data acquisition card and a computer equipped with a labview control system, and the condensation recovery module includes a cooling box and a gas exhaust pipeline, and the cooling box is connected to the electronic flow meter.

[0009] Furthermore, the top of the gas storage tank is connected to the pressure reducing valve by bolts, and the gas outlet of the pressure reducing valve is provided with a gas input pipeline 1 connected to the drying pipe, and the bottom of the drying pipe is provided with a gas input pipeline 2 connected to the pressure control valve, and sealing rings are provided in the connecting ports of the gas input pipeline 1 and the gas input pipeline 2, and a desiccant is provided in the drying pipe.

[0010] Furthermore, the electromagnetic ball valve and the electric actuator realize precise control of the gas pressure. The electric actuator adjusts the valve position by receiving the current signal from the control end. A fixing screw is arranged at the bottom of the electric actuator, and a valve position sensor is arranged in the middle of the end face of the electric actuator. The electromagnetic ball valve is located at the bottom of the electric actuator.

[0011] Furthermore, the left port of the electromagnetic ball valve is connected to a gas input pipeline 2, and the right port of the electromagnetic ball valve is provided with a gas pipeline connected to the high-pressure reactor. A threaded connector is provided at the connection port of the electromagnetic ball valve, and a sealing ring is contained in the connection port. A plurality of fixing screws 2 are provided on the outside of the electromagnetic ball valve and the gas pipeline.

[0012] Furthermore, the heating device is installed on the periphery of the high-pressure reactor. The high-pressure reactor consists of a reactor body and an upper cover. A converter connected to a gas pressure sensor is provided on the top of the upper cover.

[0013] Furthermore, the outer periphery of the high-pressure reactor is provided with a reactor air inlet and a reactor air outlet, a stop valve is provided on the end face of the reactor air inlet, a valve knob is provided on the outer wall of the stop valve, and a temperature sensor jack is provided inside the high-pressure reactor.

[0014] Furthermore, the flow control valve is connected to the electric actuator and the computer through a data acquisition card, a connecting shaft is embedded in the top of the flow control valve, and a valve knob is provided on the top of the connecting shaft, a flow pressure relief screw is provided inside the flow control valve, the left end of the electric actuator is connected to the air outlet of the high-pressure reactor, and the right end of the electric actuator is connected to the electronic flow meter.

[0015] Furthermore, the gas pressure sensor is connected to the reactor adapter to measure the gas pressure in the high-pressure reactor. A pressure measurement module is arranged on the top of the gas pressure sensor. The gas pressure sensor is provided with a signal terminal line connected to the data acquisition card. The temperature sensor is inserted into the beaker containing lubricating oil inside the high-pressure reactor through the temperature sensor jack. The electronic flow meter is connected to the flow control valve. A flow display is installed in the middle pipeline of the flow control valve. A flow accuracy adjustment knob is installed on the pipeline. A flow interface thread is arranged on the end face of the flow control valve.

[0016] Furthermore, an oil collecting bottle is provided at the bottom of the cooling box, and a Y-shaped tee is provided on the top of the oil collecting bottle, a gas exhaust pipeline is provided at the upper left end of the Y-shaped tee, and a heat-conducting metal pipe is provided on the gas exhaust pipeline body, and an exhaust gas exhaust pipeline is provided at the upper right end of the Y-shaped tee.

[0017] The beneficial effects of the present invention are:

[0018] 1. The present invention adopts modular design, each module is connected by bolts, data transmission adopts 4 to 20mA current signal transmission, and data acquisition is performed through computer labview control system, which can realize accurate control of parameters such as atmosphere pressure, simple operation and more intuitive data monitoring.

[0019] 2. Each module design of the present invention is closely connected and coordinated with each other. The experimental process is smooth and can be used to study the aging behavior of lubricating oil in an open system with a certain oxidizing atmosphere pressure. It also has the function of recovering the lost volatiles of lubricating oil and can provide hardware support for the aging mechanism analysis of lubricating oil and its additives under pressure environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is the overall structural module diagram of the system of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the gas pressure sensor of the present invention;

[0023] Figure 3 It is a cross-sectional view of the flow control valve of the present invention;

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the pressure control valve of the present invention;

[0025] Figure 5 It is a three-dimensional structural schematic diagram of the temperature sensor of the present invention;

[0026] Figure 6 It is a cutaway view and a top view of the high-pressure reactor of the present invention;

[0027] Figure 7 It is a three-dimensional structural schematic diagram of the electronic flow meter of the present invention;

[0028] Figure 8 It is a schematic diagram of the cooling box of the present invention.

[0029] Figure numerals: 1, gas storage tank; 2, pressure reducing valve; 3, gas input pipeline 1; 4, drying tube; 5, gas input pipeline 2; 6, pressure control valve; 7, gas pipeline; 8, high-pressure reactor; 9, heating equipment; 10, gas pressure sensor; 11, temperature sensor; 12, flow control valve; 13, electronic flow meter; 14, gas discharge pipeline; 15, cooling box; 16, data acquisition card; 17, computer; 18, signal terminal line; 19, flow pressure relief screw; 20, connecting shaft; 21, valve knob; 24, pressure Measuring module; 25. Electric actuator; 26. Threaded connector; 28. Fixing screw 1; 29. ​​Solenoid ball valve; 30. Valve position sensor; 31. Fixing screw 2; 34. Reactor body; 35. Heating sleeve; 36. Insulation cotton; 37. Reactor air outlet; 38. Stop valve; 39. Reactor air inlet; 40. Temperature sensor jack; 41. Flow indicator; 42. Flow interface thread; 43. Heat-conducting metal tube; 44. Y-type tee; 45. Oil collecting bottle; 46. Exhaust gas exhaust pipeline; 47. Adapter; 48. Reactor cover. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figure 1 - Figure 8 As shown, this embodiment is a test device for lubricating oil aging under pressure environment, including a gas input module, which is communicatively connected to a gas pressure control execution module, a heating control execution module, a gas flow control execution module, a measurement feedback module, a control module and a condensation recovery module.

[0032] The gas input module includes a gas storage tank 1, a pressure reducing valve 2 and a drying pipe 4. The pressure reducing valve 2 is used to reduce the pressure in the high-pressure system to a suitable working pressure, protect the equipment and pipelines, stabilize the system operation, and protect the safety of the system. The gas pressure control execution module includes a pressure control valve 6, an electromagnetic ball valve 29 and an electric actuator 25, and the electromagnetic ball valve 29 is connected to the drying pipe 4 through the pressure control valve 6. The heating control execution module includes a heating device 9 and a high-pressure reactor 8, and the high-pressure reactor 8 is connected to the drying pipe 4.

[0033] The top of the gas storage tank 1 is connected to the pressure reducing valve 2 by bolts, and the gas outlet of the pressure reducing valve 2 is provided with a gas input pipeline 1 3 connected to the drying pipe 4, and the bottom of the drying pipe 4 is provided with a gas input pipeline 2 5 connected to the pressure control valve 6, and sealing rings are provided in the connecting ports of the gas input pipeline 1 3 and the gas input pipeline 2 5, and a desiccant is provided in the drying pipe 4.

[0034] See also Figure 4 and Figure 5 The electromagnetic ball valve 29 and the electric actuator 25 realize precise control of the gas pressure. The electric actuator 25 adjusts the valve position by receiving the current signal from the control end. A fixing screw 28 is arranged at the bottom of the electric actuator 25, and a valve position sensor 30 is arranged in the middle of the end face of the electric actuator 25. The electromagnetic ball valve 29 is located at the bottom of the electric actuator 25. The electric actuator 25 is connected to the signal terminal line 18, and the valve position opening is converted into a 20mA current signal input to the computer 17, and the current signal transmitted by the measurement feedback module is received to adjust the valve position to achieve the effect of precisely controlling the input gas pressure, and its control accuracy is 0.1%.

[0035] See also Figure 3 As shown, the electric actuator 25 on the flow control valve 12 twists the stop valve knob to finely control the gas flow entering the pipeline, and a pressure relief screw is installed in the valve body to prevent the gas pressure inside the flow valve from overloading.

[0036] The left port of the electromagnetic ball valve 29 is connected to the gas input pipeline 25, and the right port of the electromagnetic ball valve 29 is provided with a gas pipeline 7 connected to the high-pressure reactor 8. A threaded connector 26 is provided at the connection port of the electromagnetic ball valve 29, and a sealing ring is contained in the connection port. A plurality of fixing screws 231 are provided on the outside of the electromagnetic ball valve 29 and the gas pipeline 7.

[0037] The heating device 9 is installed on the periphery of the high-pressure reactor 8. The high-pressure reactor 8 is composed of a reactor body 34 and an upper cover 48. A adapter 47 connected to a gas pressure sensor is provided on the top of the upper cover to observe the aging of the lubricating oil when it is heated to a high temperature. The heating device 9 at the bottom is also equipped with a signal terminal line 18 to be connected to the computer 17 so that it is heated according to the temperature set by the computer 17.

[0038] The outer wall of the high-pressure reactor 8 is respectively provided with a reactor air inlet 37 and a reactor air outlet 39, a stop valve 38 is provided on the end face of the reactor air inlet 37, a valve knob 21 is provided on the outer wall of the stop valve 38, a temperature sensor jack 40 is provided inside the high-pressure reactor 8, and the flow control execution module includes a flow control valve 12, the top end of which is used to receive the control module signal through the signal terminal line 18, and drives the stepper motor to rotate the stop valve 38 to make the gas flow at the rear end reach the set value.

[0039] The flow control valve 12 is connected to the electric actuator 25 and the computer 17 through the data acquisition card 16. A connecting shaft 20 is embedded in the top of the flow control valve 12, and a valve knob 21 is provided on the top of the connecting shaft 20. A flow pressure relief screw 19 is provided inside the flow control valve 12. The left end of the electric actuator 25 is connected to the autoclave air outlet 39 of the high-pressure reactor 8, and the right end of the electric actuator 25 is connected to the electronic flow meter 13.

[0040] Embodiment 2: This embodiment is a test device for lubricating oil aging under pressure environment, including a gas flow control execution module including a flow control valve 12, a measurement feedback module including a gas pressure sensor 10, a temperature sensor 11 and an electronic flow meter 13, and the gas pressure sensor 10 is connected to the high-pressure reactor 8, the control module includes a data acquisition card 16 and a computer 17 equipped with a labview control system, and the condensation recovery module includes a cooling box 15 and a gas exhaust pipeline 14, and the cooling box 15 is connected to the electronic flow meter 13.

[0041] The gas pressure sensor 10 is connected to the reactor adapter 47 . The gas pressure sensor 10 detects the change in gas pressure in the tank and converts the pressure value into an electrical signal to the control module through the signal terminal line 18 to measure the gas pressure in the high-pressure reactor 8 .

[0042] See also Figure 7 The bottom thread of the gas pressure sensor is connected to the adapter, and a signal transmission module is arranged on the top thereof. The temperature sensor 11 is inserted into the temperature sensor jack of the upper cover, and the bottom contact contacts the lubricating oil to monitor the temperature change of the lubricating oil during the heating process, and feeds back to the control module through the signal transmission line 18. A pressure measurement module 24 is arranged on the top of the gas pressure sensor 10. The gas pressure sensor 10 is provided with a signal terminal line 18 connected to the data acquisition card 16. The temperature sensor 11 is inserted into the beaker of lubricating oil placed inside the high-pressure reactor 8 through the temperature sensor jack 40. The electronic flowmeter 13 is connected to the flow control valve 12 for detecting the gas flow out of the tank. A flow display 41 and a flow accuracy adjustment knob 49 are installed on the middle pipe of the electronic flowmeter 13, and a flow interface thread 42 is arranged on the end face of the flow control valve 12.

[0043] like Figure 8As shown, an oil collecting bottle 45 is provided at the bottom of the cooling box 15. The cooling box 15 body is made of thermal insulation material to achieve better cooling effect. A Y-shaped tee 44 is provided on the top of the oil collecting bottle 45. The lower end of the Y-shaped tee 44 is connected to the closed oil collecting bottle. The upper end of the oil collecting bottle 45 is sealed with rubber and has good air tightness. The lower end of the tee joint is inserted into the oil collecting bottle 45, so that the lubricating oil in the exhaust gas condenses and enters the oil collecting bottle 45, which plays a role in recovering the dispersed lubricating oil. A gas exhaust pipeline 14 is provided at the upper left end of the Y-shaped tee 44, and a heat-conducting metal pipe 43 is provided on the pipe body of the gas exhaust pipeline 14. The top of the cooling box body 15 is connected to the gas exhaust pipeline 14, and the gas exhaust pipeline 14 enters the cooling box 15 body. The metal heat-conducting pipe 43 is inserted into the surface of the gas exhaust pipeline 14, and the bottom of the gas exhaust pipeline 14 is connected to the left side of the Y-shaped tee 44.

[0044] An exhaust gas exhaust pipeline 46 is provided at the upper right end of the Y-type tee 44, and the flow interface thread 42 is connected to the gas exhaust pipeline 14, and a 20mA current signal is output to the control end, so that it can perform negative feedback regulation on the flow at the rear end to achieve the gas pressure condition in the tank body of the front-end high-pressure reactor 8. The right end of the Y-type tee 44 is connected to the exhaust gas exhaust pipeline 46 to exhaust the remaining air, and a cooling medium is placed in the cooling box to achieve the required cooling effect.

[0045] The control module includes a data acquisition card 16 and a labview visual operation page on a computer 17. The 20mA signal transmitted from the feedback measurement module is collected by the data acquisition card 16 and then integrated and transmitted to the labview operation page, so that different data are summarized and the pressure, temperature, flow and other data are automatically controlled using the labview program, so that the actuator is adjusted to the required pressure, temperature and flow conditions. Its advantage is that these data can be integrated and adjusted, and the labview operation page can reflect the real-time changes of temperature, pressure and flow during the experiment.

[0046] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A test device for lubricating oil aging under pressure environment, comprising a gas input module, characterized in that: The gas input module is communicatively connected with a gas pressure control execution module, a heating control execution module, a gas flow control execution module, a measurement feedback module, a control module and a condensation recovery module; The gas input module comprises a gas storage tank (1), a pressure reducing valve (2) and a drying pipe (4); the gas pressure control execution module comprises a pressure control valve (6), an electromagnetic ball valve (29) and an electric actuator (25); the electromagnetic ball valve (29) is connected to the drying pipe (4) via the pressure control valve (6); the heating control execution module comprises a heating device (9) and a high-pressure reactor (8); and the high-pressure reactor (8) is connected to the second gas input pipeline (7). The gas flow control execution module comprises a flow control valve (12); the measurement feedback module comprises a gas pressure sensor (10), a temperature sensor (11) and an electronic flow meter (13); the gas pressure sensor (10) is connected to a high-pressure reactor (8); the control module comprises a data acquisition card (16) and a computer (17) equipped with a labview control system; the condensation recovery module comprises a cooling box (15) and a gas exhaust pipeline (14); and the cooling box (15) is connected to the electronic flow meter (13).

2. The testing device for lubricating oil aging under pressure environment according to claim 1 is characterized in that: The top of the gas storage tank (1) is connected to the pressure reducing valve (2) by bolts, and the gas outlet of the pressure reducing valve (2) is provided with a gas input pipeline (3) connected to a drying pipe (4), and the bottom of the drying pipe (4) is provided with a gas input pipeline (5) connected to a pressure control valve (6), and sealing rings are provided in the connection ports of the gas input pipeline (3) and the gas input pipeline (5), and a desiccant is provided in the drying pipe (4).

3. The testing device for lubricating oil aging under pressure environment according to claim 2, characterized in that: A fixing screw (28) is arranged at the bottom of the electric actuator (25), and a valve position sensor (30) is arranged in the middle of the end surface of the electric actuator (25). The electromagnetic ball valve (29) is located at the bottom of the electric actuator (25).

4. The testing device for lubricating oil aging under pressure environment according to claim 3 is characterized in that: The left port of the electromagnetic ball valve (29) is connected to the second gas input pipeline (5), and the right port of the electromagnetic ball valve (29) is provided with a gas pipeline (7) connected to the high-pressure reactor (8). A threaded connector (26) is provided at the connection port of the electromagnetic ball valve (29), and a sealing ring is contained in the connection port. A plurality of fixing screws (31) are provided on the outside of the electromagnetic ball valve (29) and the gas pipeline (7).

5. The testing device for lubricating oil aging under pressure environment according to claim 1, characterized in that: The heating device (9) is installed on the periphery of the high-pressure reactor (8). The high-pressure reactor (8) is composed of a reactor body (34) and an upper cover (48). The top of the upper cover is provided with an adapter (47) connected to a gas pressure sensor. The heating device (9) is composed of a heating sleeve (35) and a heat-insulating cotton (36).

6. The testing device for lubricating oil aging under pressure environment according to claim 5, characterized in that: The outer periphery of the high-pressure reactor (8) is provided with a reactor gas outlet (37) and a reactor gas inlet (39), a stop valve (38) is provided on the end surface of the reactor gas outlet (37), a valve knob (21) is provided on the outer wall of the stop valve (38), and a temperature sensor jack (40) is provided inside the high-pressure reactor (8).

7. The testing device for lubricating oil aging under pressure environment according to claim 6, characterized in that: The flow control valve (12) is connected to an electric actuator (25) and a computer (17) via a data acquisition card (16); a connecting shaft (20) is embedded in the top of the flow control valve (12); a valve knob (21) is provided on the top of the connecting shaft (20); a flow pressure relief screw (19) is provided inside the flow control valve (12); the left end of the electric actuator (25) is connected to the autoclave gas outlet (37) of the high-pressure reactor (8); and the right end of the electric actuator (25) is connected to the electronic flow meter (13).

8. The testing device for lubricating oil aging under pressure environment according to claim 7, characterized in that: The gas pressure sensor (10) is connected to the adapter (47) on the top of the upper cover (48); a pressure measurement module (24) is arranged on the top of the gas pressure sensor (10); the gas pressure sensor (10) is provided with a signal terminal line (18) connected to the data acquisition card (16); the temperature sensor (11) is installed inside the temperature sensor jack (40) of the upper cover (48); the electronic flow meter (13) is connected to the flow control valve (12); a flow display (41) is installed on the middle pipe of the electronic flow meter (13); a flow accuracy adjustment knob (49) is arranged on the pipe; and a flow interface thread (42) is arranged on the end face of the flow control valve (12).

9. The testing device for lubricating oil aging under pressure environment according to claim 8, characterized in that: An oil collecting bottle (45) is arranged at the bottom of the cooling box (15), and a Y-shaped tee (44) is arranged at the top of the oil collecting bottle (45); a gas exhaust pipeline (14) is arranged at the upper left end of the Y-shaped tee (44), and a heat-conducting metal pipe (43) is arranged on the pipe body of the gas exhaust pipeline (14); and an exhaust gas exhaust pipeline (46) is arranged at the upper right end of the Y-shaped tee (44).

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