An oil viscosity detection device and detection method

Abstract

The application discloses an oil viscosity detection device and a detection method, and relates to the technical field of oil viscosity detection equipment. The oil viscosity detection device comprises a cylinder and an anti-tilting assembly. The cylinder is provided with a liquid channel communicating with both ends of the cylinder. The anti-tilting assembly comprises a plurality of anti-tilting pieces which are uniformly and spacedly arranged on the outer periphery of the cylinder. The anti-tilting pieces are used for preventing the cylinder from tilting. In the application, the inner wall and the outer wall of the cylinder are subjected to the viscous resistance of the oil, which is beneficial to increasing the stress area of the oil detection structure, so that the oil viscosity detection device is subjected to greater viscous resistance during falling, the ratio of the viscous resistance to the total resistance of the oil viscosity detection device during falling is effectively increased, the influence of other factors on the detection result is reduced, and the measurement precision of the oil viscosity is improved.

Description

Technical Field

[0001] This invention relates to the field of oil viscosity testing equipment, and in particular to an oil viscosity testing device and testing method. Background Technology

[0002] In oil viscosity testing, commonly used methods include vibration, capillary, falling ball, and rotation methods. Vibration methods suffer from low accuracy if the vibration is too strong. Capillary methods are sensitive to environmental conditions, as the fluid readily reacts chemically with the capillary at high temperatures. The small diameter of the capillary also makes it prone to clogging. Rotation methods require more complex hardware and are more expensive. The falling ball method requires a slow-falling ball, so it's generally only used for high-viscosity fluids. Traditional falling ball methods use a spherical structure; with a fixed volume, the contact area with the oil is limited, resulting in a small and insignificant change in viscous torque, leading to inaccurate results. Rotation methods utilize a rotor rotating in the fluid. The rotor experiences viscous resistance, altering its torque or speed. The viscosity of the fluid is obtained by measuring the viscous resistance or velocity received by the rotor. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes an oil viscosity detection device that can increase the viscous torque of the oil viscosity detection device during the falling process, thereby improving the accuracy of oil viscosity measurement.

[0004] The present invention also proposes a detection method applicable to the above-mentioned oil viscosity detection device.

[0005] An oil viscosity detection device according to one embodiment of the present invention includes a cylinder and an anti-tilting assembly. The cylinder has a liquid channel connecting both ends of the cylinder, and the anti-tilting assembly includes a plurality of anti-tilting elements, which are evenly spaced on the outer periphery of the cylinder. The anti-tilting elements are used to prevent the cylinder from tilting.

[0006] In some embodiments, the cylinder is annular in shape.

[0007] In some embodiments, the number of anti-tilt components is four, and the four anti-tilt components are located at the lower end of the outer periphery of the cylinder.

[0008] In some embodiments, the anti-tilt member has a placement groove with the opening facing upwards.

[0009] In some embodiments, the anti-tilt component includes a base plate and a plurality of side plates connected sequentially along the edge of the base plate, the base plate and the plurality of side plates defining the placement groove.

[0010] In some embodiments, two adjacent side plates are perpendicular to each other.

[0011] In some embodiments, the base plate is flush with the lower end face of the cylinder.

[0012] In some embodiments, the anti-tilt assembly further includes a counterweight block disposed in the placement slot and matched with the placement slot.

[0013] The detection method of another embodiment of the present invention, applied to the above-mentioned oil viscosity detection device, further includes the following steps: pouring the oil of the viscosity to be tested into a detection container, allowing the oil viscosity detection device to fall freely in the oil, and recording the time t1 taken by the oil viscosity detection device from the starting point to the ending point; measuring the mass m of the oil viscosity detection device and the distance L between the starting point and the ending point; and analyzing and calculating t1 to obtain the viscosity coefficient of the oil.

[0014] In some embodiments, when detecting the viscosity of the oil, the viscosity of the oil is estimated. If the viscosity of the oil is high, a counterweight is placed in the placement tank of the oil viscosity detection device.

[0015] The oil viscosity detection device of this invention has at least the following beneficial effects: During detection, the oil viscosity detection device is immersed in the oil in the detection container, with the extension direction of the liquid channel coinciding with the vertical direction, allowing the oil viscosity detection device to fall freely from a stationary state. During the fall, the oil viscosity detection device is subjected to its own gravity and the viscous resistance of the oil on the oil viscosity detection device. By measuring and analyzing the fall time of the oil viscosity detection device in the detection container, the oil viscosity in the detection container can be calculated. In this application, both the inner and outer walls of the cylinder are subjected to the viscous resistance of the oil, which helps to increase the force-bearing area of ​​the oil viscosity detection device, making the oil viscosity detection device subject to greater viscous resistance during the fall. This effectively increases the ratio of the viscous resistance to the total resistance during the fall, thereby reducing the influence of other factors on the detection results and improving the measurement accuracy of oil viscosity. Meanwhile, due to the increased force-bearing area of ​​the cylinder, the oil viscosity detection device of this application embodiment can be applied to the detection of oil with low viscosity, which increases the detection scenarios of the oil viscosity detection device and improves its practicality.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the forces acting on a falling ball in the traditional falling ball method for oil viscosity testing.

[0019] Figure 2 This is a schematic diagram of liquid viscosity.

[0020] Figure 3 This is a schematic diagram of the structure of an oil viscosity detection device according to one embodiment of the present invention;

[0021] Figure 4 for Figure 3 Schematic diagram of the cross section of AA;

[0022] Figure 5 This is a schematic diagram of an oil viscosity detection device according to one embodiment of the present invention;

[0023] Figure 6 This is a force diagram of an oil viscosity detection device according to one embodiment of the present invention;

[0024] Figure 7 This is a schematic flowchart of a detection method according to another embodiment of the present invention.

[0025] Figure label:

[0026] Small ball 1, detection container 2, oil viscosity detection device 10, cylinder 11, liquid channel 110, anti-tilting component 12, placement groove 120, bottom plate 121, side plate 122. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only 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. Therefore, they should not be construed as limiting this invention.

[0029] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0031] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] In related technologies, during engine operation, various parts undergo relative motion and friction exists between them. The lubrication system plays a crucial role at this time, reducing friction by lubricating the surfaces of the parts to ensure smooth and proper engine operation. Throughout this process, lubricating oil is of paramount importance, serving to cool parts, prevent plastic deformation, clean parts surfaces, prevent rust and corrosion, lubricate component surfaces, and reduce vibration.

[0033] However, the quality of lubricating oil gradually decreases with increasing operating time, causing significant changes in its viscosity. If the lubricating oil viscosity becomes too low, surface wear and galling will occur between components. Simultaneously, lubricating oil is easily contaminated during machine operation, leading to deterioration and a significant reduction in its lubrication and cooling functions. National standard GB / T8028-1994 clearly states that lubricating oil with a kinematic viscosity change rate greater than 25% at 100℃ is unusable and must be replaced. By testing the viscosity of the lubricating oil and changing it according to its quality, machine life can be increased, the possibility of machine failure reduced, and significant economic benefits can be achieved.

[0034] See Figure 1As shown, traditional methods for measuring oil viscosity include the falling ball method. The falling ball method requires the ball to fall slowly, so it is generally only used for fluids with high viscosity. Furthermore, the traditional falling ball method uses a spherical structure, which, with a fixed volume, results in a limited contact area with the oil, a small viscous torque, and insufficient variation in the falling speed. When the oil viscosity is low, the traditional falling ball method cannot accurately measure the viscosity.

[0035] Therefore, this invention provides an oil viscosity detection device 10 to accurately measure the viscosity of oil.

[0036] like Figure 2 As shown, two identical flat plates are placed in a uniform liquid, spaced a suitable distance h apart. If the lower plate is fixed in place, when the upper plate moves horizontally at a constant speed U, the fluid adhering to the upper plate will also move at a similar speed U. The fluid velocity decreases with distance from the upper plate, while the fluid velocity adhering to the lower plate approaches zero. This is the no-slip condition: the velocity of a fluid in contact with a solid wall, whether liquid or gas, is always the same as the velocity of the fluid closest to the solid. When the two plates move relative to each other, due to the viscosity of the fluid, if we consider the fluid as layers of thin sheets, then each layer moves along with the next, and the particles on each layer of fluid move in a straight line in the direction of the overall motion. The fluid velocity decreases sequentially between layers, forming an almost linear distribution.

[0037] The above analysis shows that, in order to improve the accuracy of oil viscosity coefficient measurement, the viscous force parallel to the surface of the object should be increased, while the fluid resistance perpendicular to the surface of the object should be reduced.

[0038] Specifically, in this invention, see [link to relevant documentation]. Figures 2 to 6 As shown, one embodiment of the present invention discloses an oil viscosity detection device 10, which includes a cylinder 11 and an anti-tilting component.

[0039] Specifically, the cylinder 11 has a cylindrical structure and a liquid channel 11 connecting its two ends. The liquid channel 11 is circular, and its wall surface is the inner wall of the cylinder 11. During the testing process, the cylinder 11 is immersed in the oil, and the liquid channel 11 is filled with oil. That is to say, both the inner and outer walls of the cylinder 11 are in contact with the oil, and the oil exerts a viscous torque on both the inner and outer walls of the cylinder 11, thereby effectively increasing the viscous torque parallel to the cylinder 11.

[0040] The anti-tilt assembly includes multiple anti-tilt elements 12, which are evenly spaced around the outer periphery of the cylinder 11. The anti-tilt elements 12 are used to prevent the cylinder 11 from tilting. The multiple anti-tilt elements 12 have identical structure, dimensions, and weight; all multiple anti-tilt elements 12 are located on the same cross-section of the cylinder 11. It should be understood that the cross-section of the cylinder 11 refers to a plane perpendicular to the axial direction of the cylinder 11.

[0041] During oil viscosity testing, the oil to be tested is placed in a cup, and a cylinder 11 is dropped freely into the oil from above. The viscosity of the oil is converted into a viscous torque on the cylinder 11. The viscous torque on the cylinder 11 is related to the oil viscosity; different oil viscosities result in different falling times for the cylinder 11. Therefore, the viscosity of the oil can be reflected by the falling time of the cylinder 11, and the corresponding oil viscosity can be obtained by analyzing the falling time.

[0042] During testing, the oil viscosity testing device 10 is immersed in the oil in the testing container 2, with the extension direction of the liquid channel 11 coinciding with the vertical direction. The device is then allowed to fall freely from a stationary state. During this fall, the device experiences its own weight and the viscous resistance of the oil. By measuring and analyzing the fall time of the device in the testing container 2, the viscosity of the oil in the container is calculated. In this application, both the inner and outer walls of the cylinder 11 experience viscous resistance from the oil, which increases the force-bearing area of ​​the oil detection structure. This results in greater viscous resistance to the device during the fall, effectively increasing the ratio of viscous resistance to total resistance, thereby reducing the influence of other factors on the test results and improving the accuracy of oil viscosity measurement. In addition, the cylinder 11 has a reasonable structure and is subjected to moderate force during the fall, which makes the oil viscosity detection device 10 of this embodiment have the advantages of high sensitivity and rapid response.

[0043] It should be understood that the oil viscosity detection device 10 of this embodiment is suitable for the viscosity detection of Newtonian fluids.

[0044] It should be noted that the number of anti-tilt components 12 can be set according to actual needs, such as 3, 4 or 5 anti-tilt components 12. It should be understood that increasing the number of anti-tilt components 12 will increase the fluid concentration perpendicular to the surface of the oil viscosity detection device 10, affecting the accuracy of oil viscosity detection.

[0045] In this embodiment, see Figure 3 and Figure 4As shown, to effectively prevent the cylinder 11 from tipping over during its descent, there are four anti-tipping components 12, located at the lower end of the outer periphery of the cylinder 11. Furthermore, each anti-tipping component 12 has a placement groove 120, with the opening of the placement groove 120 facing upwards.

[0046] For a specific example in this embodiment, please refer to [link / reference]. Figure 3 and Figure 4 As shown, the anti-tilt component 12 includes a base plate 121 and multiple side plates 122 connected sequentially along the edge of the base plate 121. The base plate 121 and the multiple side plates 122 define a placement groove 120. Furthermore, adjacent side plates 122 are perpendicular to each other, and the anti-tilt component 12 has a cuboid shape. Preferably, the base plate 121 is flush with the lower end face of the cylinder 11.

[0047] As an improvement to the above embodiment, the anti-tipping component further includes a counterweight block, which is disposed in the placement groove 120 and matches the placement groove 120. Specifically, the counterweight block placed in the placement groove 120 can change the weight of the oil viscosity detection device 10, so that the oil viscosity detection device 10 falls stably in the oil, effectively preventing the oil viscosity detection device 10 from tipping over due to excessively slow falling speed, thus preventing the inner and outer walls of the cylinder 11 from failing to maintain a parallel state with the oil.

[0048] It should be noted that the weight of the counterweight can be changed according to the measurement needs, so that the oil viscosity detection device 10 can fall at an appropriate speed during the falling process, so as to achieve better measurement results.

[0049] See Figure 7 As shown, the detection method of another embodiment of the present invention, applied to the above-mentioned oil viscosity detection device 10, further includes the following steps: pouring the oil to be tested into the detection container 2, allowing the oil viscosity detection device 10 to fall freely in the oil, and recording the time t1 taken by the oil viscosity detection device 10 from the starting point to the ending point; measuring the mass m of the oil viscosity detection device 10 and the distance L between the starting point and the ending point; and analyzing and calculating t1 based on the mass m of the oil viscosity detection device 10 and the distance L between the starting point and the ending point to obtain the viscosity coefficient of the oil.

[0050] The oil viscosity measuring device 10 falls into the liquid at an appropriate speed to ensure the accuracy of the measured oil viscosity. In some embodiments, when measuring the oil viscosity, the oil viscosity is estimated. If the oil viscosity is high, a counterweight is placed in the placement tank 120 of the oil viscosity measuring device 10. By placing an appropriate counterweight in the placement tank 120, the weight of the oil viscosity measuring device 10 is changed, thereby changing the falling speed of the oil viscosity measuring device 10 in the oil, to ensure the accuracy of the measured oil viscosity.

[0051] It should be understood that the viscosity of the oil is directly reflected in the falling speed of the oil viscosity detection device 10. If the falling speed of the oil viscosity detection device 10 in the oil is too low, the cylinder 11 is prone to tipping over during the falling process.

[0052] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A detection method based on an oil viscosity detection device, the oil viscosity detection device comprising a cylinder and an anti-tilting assembly, the cylinder having a liquid channel connecting both ends of the cylinder, the anti-tilting assembly comprising a plurality of anti-tilting elements evenly spaced on the outer periphery of the cylinder, the anti-tilting elements being used to prevent the cylinder from tilting, characterized in that, Includes the following steps: The oil to be tested is poured into the testing container, and the oil viscosity testing device is allowed to fall freely in the oil. During the testing process, the cylinder is immersed in the oil so that the liquid channel is filled with oil, and both the inner and outer walls of the cylinder are in contact with the oil. The time t1 taken by the oil viscosity testing device from the start point to the end point is recorded. Measure the mass m of the oil viscosity detection device and the distance L between the starting point and the ending point; The viscosity coefficient of the oil was obtained by analyzing and calculating t1.

2. The detection method based on an oil viscosity detection device according to claim 1, characterized in that, The cylindrical body is in the shape of a ring.

3. The detection method based on an oil viscosity detection device according to claim 1, characterized in that, The number of anti-tilting components is four, and the four anti-tilting components are located at the lower end of the outer periphery of the cylinder.

4. The detection method based on an oil viscosity detection device according to any one of claims 1 to 3, characterized in that, The anti-tilt component has a placement groove with the opening facing upwards.

5. The detection method based on an oil viscosity detection device according to claim 4, characterized in that, The anti-tilt component includes a base plate and multiple side plates connected sequentially along the outer edge of the base plate, the base plate and the multiple side plates defining the placement groove.

6. The detection method based on an oil viscosity detection device according to claim 5, characterized in that, The two adjacent side plates are perpendicular to each other.

7. The detection method based on an oil viscosity detection device according to claim 5, characterized in that, The bottom plate is flush with the lower end face of the cylinder.

8. The detection method based on an oil viscosity detection device according to any one of claims 5 to 7, characterized in that, The anti-tilt component also includes a counterweight, which is disposed in the placement slot and matches the placement slot.

9. The detection method based on an oil viscosity detection device according to claim 8, characterized in that, When testing the viscosity of the oil, the viscosity of the oil is estimated. If the viscosity of the oil is high, a counterweight is placed in the placement tank of the oil viscosity testing device.

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