Thermal aging tester for lubricating oil of gas turbine engine

Abstract

The utility model discloses a gas turbine engine lubricating oil thermal aging tester, which belongs to the technical field of lubricating oil testing, and comprises a tester main body, a reaction kettle, a stirring motor, a spherical condenser, a sensor and an electric control device, a constant temperature bath is assembled on the inner side of the upper surface of the tester main body, and a reaction kettle upper cover is buckled at the upper end of the reaction kettle; the spherical condenser is assembled on the left side fixing vertical rod, the stirring motor is assembled on the right side fixing vertical rod, the output end of the stirring motor is fixedly provided with the stirring structure, and the detection end of the sensor passes through the reaction kettle upper cover and then is arranged in the reaction kettle. And the stirring motor, the stirring structure, the spherical condenser externally connected with the low-temperature circulating bath and the like are arranged, so that the experiment result is more accurate.

Description

Technical Field

[0001] The utility model belongs to the technical field of lubricating oil testing, and particularly provides a thermal aging tester for lubricating oil of gas turbine engines. Background Technique

[0002] The working conditions of engine lubricating oil are relatively harsh. Even after being fully refined and adding various effective additives to the lubricating oil, during long-term use, due to reasons such as oxidation pollution, heat, and consumption, the quality of the lubricating oil deteriorates, the color turns black, the acidity increases, the viscosity changes, the gum increases, and the performance of the additives is lost. This phenomenon is called the aging of the lubricating oil. As the use time prolongs, the aging degree of the lubricating oil will intensify. If it continues to be used, it will increase the wear of the engine, shorten the service life of the engine, increase the number of faults, and cannot ensure the normal operation of the vehicle. Moreover, it will increase fuel consumption and operation costs. Therefore, after the engine has been used for a certain period of time, the lubricating oil needs to be replaced. Therefore, the anti-aging performance of the lubricating oil is extremely important.

[0003] Existing aging test equipment mostly uses a heating jacket to heat the lubricating oil and then detects the lubricating oil. However, this heating method is not uniform enough, has a short service life, and has a certain degree of danger during the operation process. Therefore, it is necessary to design a thermal aging tester for lubricating oil of gas turbine engines. Content of the Utility Model

[0004] To solve the above problems, the utility model provides a thermal aging tester for lubricating oil of gas turbine engines.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a thermal aging tester for lubricating oil of gas turbine engines, including a tester main body, a reaction kettle, a stirring motor, a spherical condenser, a sensor, and an electric control device. The inner side of the upper surface of the tester main body is equipped with a constant temperature bath, and the reaction kettle is placed in the constant temperature bath. The upper end of the reaction kettle is buckled with a reaction kettle upper cover. The upper surface of the tester main body is equipped with a cover plate. Two fixed vertical rods are fixedly installed on the upper surface of the cover plate. The spherical condenser is assembled on the left fixed vertical rod, and the lower end of the inner tube of the spherical condenser is communicated with the reaction kettle upper cover. The outer tube of the spherical condenser is connected to an external low-temperature circulating bath. The stirring motor is assembled on the right fixed vertical rod. The output end of the stirring motor is fixedly installed with a stirring structure. The stirring structure is placed in the reaction kettle after passing through the reaction kettle upper cover. The detection end of the sensor is placed in the reaction kettle after passing through the reaction kettle upper cover. The electric control device is electrically connected to the tester main body, the stirring motor, the sensor, and an external power supply.

[0006] Further, the constant temperature bath adopts a metal bath.

[0007] Furthermore, a dryer is assembled at the upper end of the inner tube of the spherical condenser.

[0008] Furthermore, two interfaces are provided on the outer tube of the spherical condenser. The lower interface is connected to the water inlet pipe, and the upper interface is connected to the water outlet pipe. The water inlet pipe and the water outlet pipe are externally connected to a low-temperature circulating bath.

[0009] Furthermore, the electric control device includes an electric control box, a temperature controller, and a timer. The electric control box is electrically connected to the tester main body, the stirring motor, the sensor, the temperature controller, the timer, and the external power supply respectively. The temperature controller and the timer are assembled on the electric control box.

[0010] Furthermore, a clamp is assembled on the right fixed vertical rod, and the opening of the reaction kettle is located inside the clamp.

[0011] Furthermore, four openings are provided on the upper surface of the upper cover of the reaction kettle. One opening is provided in the middle of the upper surface of the upper cover of the reaction kettle, and the other three openings are evenly provided on the outer periphery of the upper surface of the upper cover of the reaction kettle. The stirring structure passes through the middle opening, and the spherical condenser and the sensor are respectively assembled in the two outer openings. The last opening is used for sampling.

[0012] The beneficial effects of using the present utility model are as follows:

[0013] 1. The constant temperature bath of the present utility model uses a metal bath for heating, has a long service life, a fast heating rate, and can stably heat during long-term operation.

[0014] 2. The present utility model is provided with a stirring motor and a stirring structure, which uniformly stir the lubricating oil while heating the lubricating oil, ensuring uniform heating of the lubricating oil and making the test results more accurate.

[0015] 3. The present utility model is provided with a spherical condenser externally connected to a low-temperature circulating bath. The low-temperature circulating bath is internally provided with a compressor for refrigeration, realizing the recycling of cooling water, avoiding the dissipation of the lubricating oil after heating, maintaining its total amount unchanged, and making the experimental results more accurate.

[0016] 4. The present utility model adopts a split design of the instrument, separately arranging the test equipment and the electric control equipment, effectively avoiding the heat generated by the test equipment from being transferred to the electric control equipment, preventing the electric control equipment from being damaged due to temperature rise, increasing its service life, and having better safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model.

[0018] Figure 2 is a top view of the upper cover of the reaction kettle of the present utility model.

[0019] The reference numerals include: 1, tester main body; 2, cover plate; 3, fixed vertical rod; 4, reactor; 5, reactor upper cover; 6, stirring motor; 7, stirring structure; 8, spherical condenser; 9, sensor; 10, constant temperature bath; 11, dryer; 12, electric control box; 13, temperature controller; 14, timer; 15, fixture. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Referring to Figure 1 , a fuel gas turbine engine lubricating oil thermal aging tester, comprising a tester main body 1, a reactor 4, a stirring motor 6, a spherical condenser 8, a sensor 9 and electric control equipment. A constant temperature bath 10 is assembled inside the upper surface of the tester main body 1, and the reactor 4 is placed in the constant temperature bath 10. A reactor upper cover 5 is buckled on the upper end of the reactor 4. A cover plate 2 is assembled on the upper surface of the tester main body 1. Two fixed vertical rods 3 are fixedly installed on the upper surface of the cover plate 2. The spherical condenser 8 is assembled on the left fixed vertical rod 3, and the lower end of the inner tube of the spherical condenser 8 is communicated with the reactor upper cover 5. The outer tube of the spherical condenser 8 is connected with an external low-temperature circulating bath. The stirring motor 6 is assembled on the right fixed vertical rod 3. A stirring structure 7 is fixedly installed at the output end of the stirring motor 6. The stirring structure 7 is placed in the reactor 4 after passing through the reactor upper cover 5. The detection end of the sensor 9 is placed in the reactor 4 after passing through the reactor upper cover 5. The electric control equipment is electrically connected to the tester main body 1, the stirring motor 6, the sensor 9 and an external power supply.

[0022] The tester main body 1 is used to heat the reactor 4 and support and fix the reactor 4, the stirring motor 6, the spherical condenser 8 and the sensor 9.

[0023] Lubricating oil is placed in the reactor 4, and the volume of the reactor 4 is 5L.

[0024] The stirring motor 6 is used to drive the stirring structure 7 to rotate, so that the stirring structure 7 stirs the lubricating oil in the reactor 4, enabling the lubricating oil to be heated evenly.

[0025] The stirring structure 7 is composed of an upper stirring rod and a lower stirring paddle. When the stirring structure 7 is arranged in the reactor, the stirring paddle of the stirring structure 7 needs to be at the position required by the standard.

[0026] The spherical condenser 8 includes an inner tube and an outer tube. The inner tube is formed by connecting multiple spherical tubes, and the outer tube is a cylindrical tube. The part of the lubricating oil that evaporates due to heat will enter the inner tube. Cooling water is introduced into the outer tube, which is used to condense the evaporated part of the lubricating oil and flow back into the reaction kettle 4 to ensure that the total amount of lubricating oil remains unchanged, making the aging treatment more accurate.

[0027] The cooling water introduced into the outer tube of the spherical condenser 8 is temperature-controlled through an external low-temperature circulating bath. Compared with the traditional method of using tap water for cooling, the design of the spherical condenser 8 and the external low-temperature circulating bath is no longer restricted by the position of the water source and the floor drain, making this instrument convenient to move and conduct experiments, and can avoid waste of water resources.

[0028] The sensor 9 uses a PT100 sensor to measure the temperature of the lubricating oil in the reaction kettle 4.

[0029] The constant temperature bath 10 is used to uniformly heat the reaction kettle 4.

[0030] Specifically, the constant temperature bath 10 uses a metal bath, which has the characteristics of long service life, fast heating rate and uniform heating, increasing the stability of the aging test.

[0031] Specifically, as Figure 1 shown, a dryer 11 is assembled at the upper end of the inner tube of the spherical condenser 8, which is used to absorb the water vapor existing in the reaction kettle 4 during the heating process to ensure the accuracy of the aging test.

[0032] Specifically, two interfaces are provided on the outer tube of the spherical condenser 8. The lower interface is connected to the water inlet pipe, and the upper interface is connected to the water outlet pipe. The water inlet pipe and the water outlet pipe are externally connected to the low-temperature circulating bath, and the cooling water flows from bottom to top, which can achieve a better cooling effect.

[0033] Specifically, as Figure 1 shown, the electric control equipment includes an electric control box 12, a temperature controller 13 and a timer 14. The electric control box 12 is respectively electrically connected to the tester main body 1, the stirring motor 6, the sensor 9, the temperature controller 13, the timer 14 and the external power supply. The temperature controller 13 and the timer 14 are assembled on the electric control box 12.

[0034] The temperature of the constant temperature bath 10 is controlled by the temperature controller 13, and the timer 14 is used to time the heating time.

[0035] Specifically, as Figure 1 shown, a clamp 15 is assembled on the right fixed vertical rod 3, and the opening of the reaction kettle 4 is located inside the clamp 15.

[0036] The reaction kettle 4 is assisted to be fixed by the clamp 15.

[0037] Specifically, as Figure 2As shown in the figure, four openings are provided on the upper surface of the upper cover 5 of the reactor. One opening is provided in the middle of the upper surface of the upper cover 5 of the reactor, and the other three openings are evenly arranged on the outer periphery of the upper surface of the upper cover 5 of the reactor. The stirring structure 7 passes through the middle opening, and the spherical condenser 8 and the sensor 9 are respectively assembled in the two outer openings. The last opening is used for sampling.

[0038] The openings need to be sealed when not in use.

[0039] The usage method of this gas turbine engine lubricating oil thermal aging tester:

[0040] 1. Install the fixed support rod 3 and the fixture 15 with the supporting nuts.

[0041] 2. Install the stirring structure 7 on the upper cover 5 of the reactor, and connect the stirring motor 6 and the stirring structure 7 with a coupling, so that the stirring paddle of the stirring structure 7 is in the position required by the standard, and pad the sealing gasket.

[0042] 3. Install and fix the spherical condenser 8 and the dryer 11, then install the sensor 9, and ensure that the position of the sensor 9 meets the standard requirements; connect the two pipes of the low-temperature circulating bath with the outer pipe of the spherical condenser 8 with a silica gel tube; add distilled water into the low-temperature circulating bath and turn on the low-temperature circulating bath.

[0043] 4. Turn on the power switch, turn on the heating switch, set the temperature controller 13 to the required temperature, turn on the timer 14 switch, and set the time required for the test.

[0044] 5. Turn on the switch of the stirring motor 6 and adjust the appropriate speed.

[0045] 6. Open the upper cover of the last opening on the upper cover 5 of the reactor during the test according to the standard requirements to extract the sample.

[0046] During the heating process, uninterrupted constant temperature heating for 700 hours is required.

[0047] After sampling, test the sample for indicators such as scatter, viscosity, acid value, etc., and the anti-aging ability of this lubricating oil can be obtained.

[0048] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, many changes can be made in the specific implementation manners and application scopes according to the idea of the present invention. As long as these changes do not deviate from the concept of the present invention, they all belong to the protection scope of the present invention.

Claims

1. Gas turbine engine lubricating oil thermal aging tester, characterized by: The tester comprises a tester body (1), a reaction kettle (4), a stirring motor (6), a spherical condenser (8), a sensor (9) and an electric control device. A constant temperature bath (10) is installed on the inner side of the upper surface of the tester body (1), and the reaction kettle (4) is placed in the constant temperature bath (10). A reaction kettle upper cover (5) is buckled on the upper end of the reaction kettle (4). A cover plate (2) is installed on the upper surface of the tester body (1). A fixed vertical pole (3) is fixedly installed on the upper surface of the cover plate (2). There are two fixed vertical poles (3). The spherical condenser (8) is installed on the left side of the fixed vertical pole (3). The lower end of the inner tube of the spherical condenser (8) is connected to the upper cover (5) of the reactor, and the outer tube of the spherical condenser (8) is connected to an external low-temperature circulating bath. The stirring motor (6) is mounted on the fixed vertical rod (3) on the right side, and a stirring structure (7) is fixedly installed on the output end of the stirring motor (6). The stirring structure (7) is placed in the reactor (4) through the upper cover (5) of the reactor, and the detection end of the sensor (9) is placed in the reactor (4) through the upper cover (5) of the reactor. The electronic control device is electrically connected to the tester body (1), the stirring motor (6), the sensor (9) and the external power supply.

2. The gas turbine engine lubricating oil thermal aging tester according to claim 1, characterized in that: The constant temperature bath (10) is a metal bath.

3. The gas turbine engine lubricating oil thermal aging tester according to claim 1, characterized in that: The upper end of the inner tube of the spherical condenser (8) is equipped with a dryer (11).

4. The gas turbine engine lubricating oil thermal aging tester according to claim 1, characterized in that: The outer tube of the spherical condenser (8) is provided with two interfaces, the lower interface is connected to the water inlet pipe, and the upper interface is connected to the water outlet pipe, and the water inlet pipe and the water outlet pipe are externally connected to a low-temperature circulating bath.

5. The gas turbine engine lubricating oil thermal aging tester according to claim 1, characterized in that: The electric control device comprises an electric control box (12), a temperature controller (13) and a timer (14); the electric control box (12) is electrically connected to the tester body (1), the stirring motor (6), the sensor (9), the temperature controller (13), the timer (14) and an external power source respectively; the temperature controller (13) and the timer (14) are mounted on the electric control box (12).

6. The gas turbine engine lubricating oil thermal aging tester according to claim 1, characterized in that: The fixed upright pole (3) on the right side is equipped with a clamp (15), and the opening of the reaction kettle (4) is located in the clamp (15).

7. The gas turbine engine lubricating oil thermal aging tester according to claim 1, characterized in that: The upper surface of the reactor cover (5) is provided with four openings, one of which is provided in the middle of the upper surface of the reactor cover (5), and the other three openings are evenly provided on the periphery of the upper surface of the reactor cover (5). The stirring structure (7) passes through the middle opening, and the spherical condenser (8) and the sensor (9) are respectively installed on the two outer openings, and the last opening is used for extracting samples.

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