Flow cell with lubricating oil abrasive particle measuring function

Abstract

The invention discloses a flow cell with a lubricating oil abrasive particle measuring function, and relates to the technical field of lubricating oil, the flow cell comprises a measuring main body, two pipelines, a measuring instrument and a light emitting instrument; a cavity is formed in the measuring main body; the cavity penetrates through two sides of the measuring main body to form two circulation ports; the pipelines are communicated with the cavity through the corresponding circulation openings; the pipeline has a structure with a round top and a square bottom; a first mounting opening and a second mounting opening are respectively formed in two side surfaces of the measuring main body; the measuring instrument is arranged on the measuring main body through the first mounting port to seal the first mounting port, and part of the measuring instrument is located in the cavity; and the light-emitting instrument is arranged on the measuring main body through the second mounting port to seal the second mounting port. According to the invention, the accuracy of the detection result can be ensured, the flowing circulation of the lubricating oil can be effectively improved, and the lubricating oil can be recycled conveniently.

Description

Technical Field

[0001] The present application relates to the technical field of lubricating oil, and in particular to a circulation cell with the function of measuring lubricating oil abrasive particles. Background Art

[0002] Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts. It has a wide range of applications in the fields of automobiles, mechanical equipment, etc.

[0003] At present, lubricating oil is generally used in a cyclic way to continuously lubricate the equipment. During the process of lubricating oil on the equipment, the abrasive particles generated by the equipment's operation will flow away with the lubricating oil. Usually, a filtering structure is set to filter the abrasive particles in the lubricating oil to reduce the impact of subsequent abrasive particles flowing with the lubricating oil on the operation of the equipment.

[0004] However, after the abrasive particles in the lubricating oil are filtered, some fine abrasive particles still exist in the lubricating oil. If the number of fine abrasive particles is large, the lubricating effect of the lubricating oil on the equipment will also be affected. For this reason, it is usually necessary to set a structure for measuring the abrasive content in the lubricating oil after the filtering structure, so that the user can know the quality of the lubricating oil in time, so as to better select and use the lubricating oil, and provide guarantee for the normal operation and extended service life of the equipment.

[0005] However, in the existing equipment with the function of measuring the abrasive content in lubricating oil, the lubricating oil is easily disturbed by the corners and protrusions of the internal structure during its flow, which affects the fluidity of the lubricating oil. In addition, the abrasive particles in the lubricating oil are easily blocked and retained inside the equipment, which has an adverse effect on the accuracy of the test results and the subsequent fluidity of the lubricating oil inside the equipment. Summary of the invention

[0006] The present application provides a circulation cell with the function of measuring lubricating oil abrasive particles, which can effectively improve the fluidity of the lubricating oil flowing through while ensuring the accuracy of the detection results, thereby facilitating the recycling of the lubricating oil.

[0007] The present application provides a flow cell with the function of measuring lubricating oil abrasive particles, which adopts the following technical solution: A flow cell with the function of measuring lubricating oil wear particles, comprising a measuring body, two pipes, a measuring instrument and a light emitting instrument; The measuring body is a rectangular parallelepiped structure as a whole, with a rectangular parallelepiped cavity in the center thereof, and the length direction and width direction of the cavity are respectively parallel to the length direction and width direction of the measuring body; the cavity passes through the two sides of the measuring body to form two flow openings, and the two flow openings are aligned in the horizontal direction; The two pipes are respectively arranged on both sides of the measuring body, and the pipes are connected to the cavity through the corresponding circulation ports; the pipe has a round structure, one end connected to the measuring body is square and the other end is round; the internal space of the pipe transitions from round to square in the direction close to the measuring body, and the inner wall of the end of the pipe connected to the measuring body is flush with the wall of the circulation port; The measuring body is provided with a first mounting opening and a second mounting opening in the center of two side surfaces along its height direction, the first mounting opening is located above the second mounting opening, and both the first mounting opening and the second mounting opening are communicated with the cavity; The measuring instrument is arranged on the measuring body through the first mounting opening, the first mounting opening is sealed, and a part of the measuring instrument is located in the cavity; The light emitting instrument is arranged on the measuring body through the second mounting opening, the second mounting opening is sealed, and the surface of the portion located in the second mounting opening is flush with the inner wall of the cavity.

[0008] By adopting the above technical scheme, the lubricating oil entering the cavity can have a sufficiently wide space to flow, so that the lubricating oil can flow more smoothly through the space between the measuring instrument and the light-emitting instrument, thereby effectively ensuring the accuracy of the measurement results; at the same time, the process of the lubricating oil entering and exiting the cavity through the pipeline can be made smoother, and it can flow between the measuring instrument and the light-emitting instrument in a horizontal flow manner, thereby effectively reducing the probability of the lubricating oil being blocked in the process of flowing through the circulation pool.

[0009] Optionally, one end of the pipe connected to the measuring body has a plug-in portion, and the surface of the measuring body has a plug-in groove matched with the plug-in portion at the outer edge of the flow port.

[0010] By adopting the above technical solution, it is possible to facilitate the connection between the pipeline and the measuring body, and at the same time, the sealing of the pipeline after installation on the measuring body can be effectively guaranteed.

[0011] Optionally, after the pipe is plugged into the measuring body, a clearance groove is formed between the pipe and the measuring body to facilitate welding operation.

[0012] By adopting the above technical solution, it is possible to further facilitate the connection between the pipeline and the measuring body, and at the same time, it is possible to further effectively ensure the sealing of the pipeline after installation on the measuring body.

[0013] Optionally, two observation windows are further included. The measuring body is provided with observation ports on both sides except the flow port. The observation windows are arranged in the corresponding observation ports, the observation ports are sealed and the end faces thereof close to the cavity are flush with the inner wall of the cavity.

[0014] By adopting the above technical solution, it is convenient for the staff to observe the situation in the cavity, and at the same time, the probability of the lubricating oil being blocked when flowing around the observation port can be reduced, so that the flow of the lubricating oil in the cavity can be smoother.

[0015] Optionally, a side wall of the observation port close to the second mounting port is flush with an inner wall of the cavity close to the second mounting port, and the observation port is aligned along its opening direction with the space between the portion of the measuring instrument in the cavity and the light-emitting instrument.

[0016] By adopting the above technical solution, it is convenient for workers to observe the space between the measuring instrument and the light-emitting instrument more intuitively.

[0017] Optionally, the measuring body has a plurality of first transition surfaces at the corners of the cavity close to the second mounting port, and two ends of the first transition surfaces are respectively connected to the square inner wall of the pipe and the wall of the observation port.

[0018] By adopting the above technical solution, the probability of the lubricating oil being blocked at the bottom corner when flowing in the cavity can be reduced, so that the flow process of the lubricating oil in the cavity can be smoother.

[0019] Optionally, the inner wall of the pipe has four second transition surfaces, the second transition surfaces extend along the square edges of the pipe and are radially arranged in a direction close to the cavity, and one end of the second transition surface close to the cavity is connected to the adjacent first transition surface.

[0020] By adopting the above technical solution, the probability of the lubricating oil being blocked at the corners of the square area when flowing in the pipeline can be reduced, so that the flow process of the lubricating oil in the pipeline can be smoother.

[0021] Optionally, a protective tube with a smooth surface is further provided inside the measuring body, and the protective tube is a hollow cylindrical structure, one end of which in the axial direction is connected to the inner wall of the cavity close to the first mounting port, and the axis of the protective tube coincides with the axis of the first mounting port; after the measuring instrument is installed on the measuring body, the part of the measuring instrument located in the cavity is located inside the protective tube.

[0022] By adopting the above technical scheme, it is possible to effectively prevent the lubricating oil from directly contacting the part of the measuring instrument located in the cavity during the flow, and the smooth surface of the protective tube can effectively guide the lubricating oil to flow smoothly, thereby further effectively reducing the probability of the lubricating oil being obstructed in the cavity, and at the same time reducing the impact of the direct contact between the abrasive particles in the lubricating oil and the part of the measuring instrument located in the cavity on the measuring instrument.

[0023] Optionally, a semi-transparent and elastic seal is provided at one end of the protective tube near the second mounting port, and the seal is an annular structure, and its axis coincides with the axis of the protective tube; after the measuring instrument and the light-emitting instrument are installed on the measuring body, the inner side of the seal fits against the end circumference of the part of the measuring instrument located in the cavity to form a seal, and the illumination range of the light-emitting instrument in the cavity can cover the seal.

[0024] By adopting the above technical solution, the seal can further prevent the lubricating oil from contacting the measuring instrument, thereby further reducing the impact of abrasive particles in the lubricating oil on the measuring instrument; at the same time, the seal can reflect and scatter the light after being illuminated by the light-emitting instrument, so that the visible range in the cavity after being illuminated by the light-emitting instrument is larger and brighter, which is convenient for the detection instrument to carry out detection while also facilitating the staff to observe through the observation window.

[0025] Optionally, the maximum radial dimension of the circular area inside the pipe is not greater than the maximum side length of the square area inside the pipe.

[0026] By adopting the above technical solution, the lubricating oil can be slowed down first and then accelerated when flowing in and out of the cavity through the pipeline, so that the lubricating oil can flow smoothly in the cavity, while reducing its impact on the overall efficiency of lubricating oil transportation.

[0027] In summary, the present application includes at least one of the following beneficial effects: 1. It can effectively improve the fluidity of the lubricating oil flow while ensuring the accuracy of the test results, making it easier for the lubricating oil to be recycled; 2. The lubricating oil can flow through the space between the measuring instrument and the light-emitting instrument in a gentle and flat manner, which is convenient for the measuring instrument to measure, and can effectively reduce the impact of this design on the overall efficiency of lubricating oil delivery; 3. It can reduce the probability of the lubricating oil being blocked in the process of flowing through the flow pool, thereby reducing the probability of the abrasive particles staying in the flow pool, and further reducing the probability of the abrasive particles affecting the normal operation of the flow pool; 4. It can effectively improve the lighting effect of the luminous instrument in the cavity, so that it is convenient for the measuring instrument to measure the abrasive content in the lubricating oil, and it is convenient for the staff to observe the situation in the cavity through the observation window. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 1 is a schematic diagram of the structure of a flow cell having the function of measuring lubricating oil abrasive particles in Example 1; Figure 2 is a cross-sectional view of a flow cell having a function of measuring lubricating oil wear particles according to Example 1; Figure 3 yes Figure 2 The enlarged view of point A in the middle; Figure 4 is a schematic diagram of a half-section structure after the pipeline is installed on the measuring body in Example 1; Figure 5 This is a cross-sectional view of a circulation pool having the function of measuring lubricating oil wear particles according to Example 2.

[0029] Explanation of the reference numerals: 1. Measuring body; 11. Cavity; 12. Flow port; 13. First mounting port; 14. Second mounting port; 15. Observation port; 16. First transition surface; 17. Plug-in groove; 2. Pipeline; 21. Plug-in portion; 22. Second transition surface; 3. Measuring instrument; 4. Light-emitting instrument; 5. Observation window; 6. Give way groove; 7. Protective tube; 8. Sealing member. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-5 This application is described in further detail.

[0031] Embodiment 1: The embodiment of the present application discloses a circulation pool with the function of measuring abrasive particles in lubricating oil, which is used for real-time measurement of the abrasive content in the lubricating oil after equipment lubrication and preliminary filtration. It is also the conveying section in the circulation of the lubricating oil. The staff can judge the quality of the lubricating oil through the real-time measurement data in the background, and can also directly observe the internal situation to judge the quality of the lubricating oil, so as to decide whether to replace the lubricating oil, so that the equipment to be lubricated can maintain stable operation and reduce the impact caused by the high abrasive content in the lubricating oil.

[0032] Reference Figure 1 and Figure 2The circulation pool includes a measuring body 1, two pipes 2, a measuring instrument 3, a light-emitting instrument 4 and two observation windows 5. The inside of the measuring body 1 is used for lubricating oil to circulate, providing a place for measuring the abrasive content in the lubricating oil; the two pipes 2 are used to supply lubricating oil to and from the measuring body 1; the measuring instrument 3 is used to measure the abrasive content of the lubricating oil flowing through the inside of the measuring body 1; the light-emitting instrument 4 is used to provide lighting inside the measuring body 1, which is convenient for the measuring instrument 3 to measure the abrasive content; the observation window 5 is used for the staff to observe the abrasive retention situation inside the measuring body 1 and the operation of the light-emitting instrument 4, so that the staff can clean the inside of the measuring body 1 in time when the number of abrasive retention inside the measuring body 1 is large, and can repair and replace the light-emitting instrument 4 in time when the light-emitting instrument 4 fails to operate.

[0033] The measuring body 1 is a rectangular parallelepiped structure with a square cross section, and the measuring body 1 is installed in a position state where the square cross section is a horizontal plane. A rectangular parallelepiped cavity 11 with a square cross section is provided inside the measuring body 1, and the square cross section of the cavity 11 is vertical, and the vertical center line of the measuring body 1 intersects with the horizontal center line of the cavity 11 and is perpendicular to each other.

[0034] Reference Figure 2 and Figure 3 The cavity 11 is formed with flow openings 12 for the lubricating oil to enter and exit on both sides of the measuring body 1 in the horizontal direction. The flow openings 12 are square in shape, and the size of the flow openings 12 is equal to the square cross-sectional size of the cavity 11.

[0035] Reference Figure 2 and Figure 4 , two pipes 2 are respectively installed on both sides of the measuring body 1 in the horizontal direction; the pipe 2 as a whole has a round sky and square earth structure, that is, one end of the pipe 2 in the length direction is a circular structure, the other end in the length direction is a square structure, and the middle part of the pipe 2 is a structure transitioning from a circular structure to a square structure; the space inside the pipe 2 for the circulation of lubricating oil also has the shape of a round sky and a square earth, that is, the internal space of the square structure of the pipe 2 is a circular area, the internal space of the circular structure is a square area, and the middle part of the internal space of the pipe 2 is a shape transitioning from a circular area to a square area.

[0036] The two pipes 2 correspond to the two flow openings 12 one by one, and one end of the square structure of the pipe 2 can be fixedly connected to the measuring body 1 through the flow opening 12 , so that the lubricating oil can flow into and out of the cavity 11 through the two pipes 2 .

[0037] Reference Figure 2 and Figure 3The pipe 2 has a plug-in portion 21 extending outward from the end of its square structure, and the plug-in portion 21 is a ring structure with a square track; the surface of the measuring body 1 is provided with a plug-in groove 17 adapted to the plug-in portion 21 at the outer edge of the flow port 12. After the pipe 2 is plugged into the plug-in groove 17 on the measuring body 1 through the plug-in portion 21, the staff can fix the pipe 2 to the measuring body 1 by welding. In this embodiment, after the pipe 2 is fixedly connected to the measuring body 1, it is preferred that the entire pipe 2 needs to be demagnetized, and the inner wall of the pipe 2 and the inner wall of the measuring body 1 are smooth to reduce the probability of abrasive adsorption.

[0038] Furthermore, after the pipe 2 is plugged into the measuring body 1, a clearance groove 6 is formed between the outer side of the square structure end of the pipe 2 and the corresponding end of the measuring body 1 to facilitate welding operations by the staff, and the shape of the clearance groove 6 is also a ring of a square trajectory, so that the staff can weld to form a weld of a square trajectory, thereby improving the connection stability between the pipe 2 and the measuring body 1.

[0039] After the two pipes 2 are fixedly installed on the measuring body 1, the axes of the two pipes 2 coincide, the axes of the pipes 2 are perpendicular to the adjacent surfaces on the measuring body 1, the axes of the pipes 2 coincide with the horizontal center line of the cavity 11, and the inner wall of the square structure of the pipes 2 is flush with the inner wall of the cavity 11.

[0040] Reference Figure 2 and Figure 4 The measuring body 1 has a first mounting opening 13 and a second mounting opening 14 at both ends along its height direction, the first mounting opening 13 is located above the second mounting opening 14, and both the first mounting opening 13 and the second mounting opening 14 are in communication with the cavity 11. The first mounting opening 13 and the second mounting opening 14 are both circular openings as a whole, and the axis of the first mounting opening 13 coincides with the axis of the second mounting opening 14, and coincides with the vertical center line of the measuring body 1.

[0041] The first mounting opening 13 is used for the measuring instrument 3 to be mounted and fixed on the measuring body 1. After the measuring instrument 3 is mounted and fixed on the measuring body 1, the measuring instrument 3 will be partially located on the top of the measuring body 1 and partially located in the cavity 11, and the measuring instrument 3 will seal the first mounting opening 13. In this embodiment, the measuring instrument 3 is preferably an industrial camera that can take pictures in a vertical downward direction, and the portion located in the cavity 11 is a cylindrical structure as a whole, and the axis of the portion coincides with the axis of the cavity 11; since the industrial camera is a common prior art, it will not be described in detail here, and it is only briefly shown in the drawings.

[0042] The second mounting opening 14 is used for the light emitting instrument 4 to be mounted and fixed on the measuring body 1. After the light emitting instrument 4 is mounted and fixed on the measuring body 1, the light emitting instrument 4 will partially fill the second mounting opening 14 and seal the second mounting opening 14, and at the same time partially be located at the bottom of the measuring body 1. In this embodiment, the light emitting instrument 4 is preferably a planar light source, and the surface of the part of the light emitting instrument 4 located in the second mounting opening 14 close to the cavity 11 is flush with the inner wall of the cavity 11 close to the second mounting opening 14, and the light emitting area thereof is circular and the illumination coverage range is not less than the shooting range of the measuring instrument 3 in the cavity 11; since the planar light source is a common prior art, it will not be described in detail here, and it is only briefly indicated in the drawings.

[0043] The space formed between the part of the measuring instrument 3 located in the cavity 11 and the light-emitting instrument 4 is the measuring area. When the lubricating oil flows through the cavity 11 through the pipeline 2, the measuring instrument 3 can measure the abrasive content in the lubricating oil flowing through the space between it and the light-emitting instrument 4 in real time.

[0044] Observation ports 15 are provided on the other two sides of the measuring body 1 in the horizontal direction for the staff to directly observe the situation in the cavity 11. The shape of the observation port 15 is approximately a waist-shaped hole. The width direction of the observation port 15 is parallel to the height direction of the measuring body 1, and its length direction is parallel to the adjacent side lengths of the square cross-section of the measuring body 1.

[0045] Reference Figure 1 and Figure 4 The two observation ports 15 are aligned along a direction perpendicular to the plane where the observation ports 15 are located, and the positions of the observation ports 15 on the plane where the measurement body 1 is located are centered along the direction of the side length adjacent to the square cross section of the measurement body 1 .

[0046] Reference Figure 2 and Figure 4 Furthermore, it is preferred that the wall of the observation port 15 on the side close to the second installation port 14 is flush with the inner wall of the cavity 11 on the side close to the second installation port 14 .

[0047] At this time, the staff can visually observe the flow of the lubricating oil in the space between the measuring instrument 3 and the light-emitting instrument 4 through the observation port 15 , and can also visually observe the lighting effect of the light-emitting instrument 4 in the cavity 11 .

[0048] Reference Figure 2 Furthermore, it is preferred that the width of the observation port 15 is equal to the distance between the measuring instrument 3 and the light-emitting instrument 4, and the observation port 15 is aligned with the measuring area between the measuring instrument 3 and the light-emitting instrument 4 along its opening direction.

[0049] At this time, the staff can more intuitively observe the flow of the lubricating oil in the space between the measuring instrument 3 and the light-emitting instrument 4 through the observation port 15 , and can also more intuitively observe the lighting effect of the light-emitting instrument 4 in the cavity 11 .

[0050] The two observation windows 5 correspond to the two observation ports 15 one by one. The observation windows 5 are fixedly mounted on the measuring body 1 through the corresponding observation ports 15, and the staff can observe the situation inside the cavity 11 through the observation ports 15. After the observation windows 5 are fixedly mounted on the measuring body 1, the observation windows 5 can fill the corresponding observation ports 15, and at this time, the surface of the observation windows 5 close to the cavity 11 is flush with the inner wall of the cavity 11 close to the observation ports 15. In this embodiment, since the observation windows 5 are common prior art, they are not described here in detail, and are only briefly shown in the drawings.

[0051] Reference Figure 2 and Figure 4 Further, it is preferred that the measuring body 1 has six first transition surfaces 16 at the corners of the inner wall of the cavity 11, and the first transition surfaces 16 are arc surfaces. The six first transition surfaces 16 are respectively distributed at the junction of the inner walls on both sides of the cavity 11 in the horizontal direction and the inner walls on both sides of the cavity 11 in the height direction of the measuring body 1, two first transition surfaces 16 are distributed at the top of the cavity 11, and four first transition surfaces 16 are distributed at the bottom of the cavity 11.

[0052] Two first transition surfaces 16 located at the top of the cavity 11 extend in a direction parallel to the direction of the flow opening 12, and their length dimension is equal to the dimension of the cavity 11 along its own horizontal center line; The four first transition surfaces 16 located at the bottom of the cavity 11 extend in a direction parallel to the direction of the flow port 12 , with one end in the length direction connected to the wall of the adjacent observation port 15 and the other end in the length direction extending to the wall of the adjacent flow port 12 .

[0053] Furthermore, the pipe 2 preferably has four second transition surfaces 22 on the inner wall where the circular area transitions to the square area. The second transition surfaces 22 are also arc surfaces, and the four second transition surfaces 22 are respectively located in the square area and at four corners close to the square area.

[0054] The second transition surface 22 extends along the extension trajectory of the corner where the circular area transitions to the directional area, and the second transition surface 22 is radial in the direction close to the square area; when the pipeline 2 is installed and fixed to the measuring body 1, the end of the second transition surface 22 away from the circular area will be connected to the end of the adjacent first transition surface 16 close to the flow port 12.

[0055] Furthermore, the maximum radial dimension of the circular area is not greater than the maximum side length of the square area. In this embodiment, the maximum radial dimension of the circular area of ​​the pipeline 2 is preferably equal to the maximum side length of the square area.

[0056] At this time, in the process of the lubricating oil entering and exiting the cavity 11 through the pipe 2, the flow rate can be slowed down due to the gradual increase in the cross-sectional area of ​​the pipe 2, so that the lubricating oil can flow through the cavity 11 in a gentle and horizontal manner; and then the flow rate is increased due to the gradual decrease in the cross-sectional area of ​​the pipe 2, so that the lubricating oil can continue to be transported at a faster flow rate, thereby facilitating the detection instrument to measure the abrasive content in the lubricating oil flowing in the cavity 11, and effectively reducing the impact of the slowed flow rate of the lubricating oil in the cavity 11 on the overall transportation efficiency of the lubricating oil.

[0057] The implementation principle of a flow cell with the function of measuring lubricating oil wear particles in the embodiment of the present application is as follows: After the lubricating oil flows into the cavity 11 through the pipe 2, it can flow through the space between the measuring instrument 3 and the light-emitting instrument 4 in a gentle and horizontal flow manner, and the light-emitting instrument 4 illuminates and the detection instrument measures the abrasive content in the lubricating oil in real time. The staff can obtain the real-time data of the measurement in the background, and judge the quality of the lubricating oil by the measurement results, so that the lubricating oil can effectively lubricate the equipment; the condition of the lubricating oil inside the cavity 11 and the operation of the light-emitting instrument 4 can also be directly observed through the observation window 5, and the abrasive content in the cavity 11 and whether the light-emitting instrument 4 is operating normally can be timely known, so that corresponding operation adjustments can be made in time according to different situations; When the lubricating oil enters and exits the cavity 11, the fluidity of the lubricating oil can be effectively improved, so that the recycling of the lubricating oil is facilitated.

[0058] Embodiment 2: Reference Figure 2 and Figure 5 The difference between this embodiment and embodiment 1 lies in the measuring body 1.

[0059] Reference Figure 5 A protective tube 7 for protecting the portion of the measuring instrument 3 located in the cavity 11 is fixedly connected to the interior of the measuring body 1. The protective tube 7 is a hollow cylindrical structure as a whole, and the outer surface of the protective tube 7 is smooth.

[0060] The inner diameter of the protective tube 7 is larger than the radial dimension of the portion of the measuring instrument 3 located in the cavity 11, and the length of the protective tube 7 is smaller than the length of the portion of the measuring instrument 3 located in the cavity 11. One end of the protective tube 7 in the axial direction is fixedly connected to the inner wall of the cavity 11 near the first mounting opening 13, and the axis of the protective tube 7 coincides with the axis of the first mounting opening 13. When the measuring instrument 3 is mounted and fixed on the measuring body 1, the portion of the measuring instrument 3 located in the cavity 11 will be completely located inside the protective tube 7, and the protective tube 7 prevents the lubricating oil from directly contacting the portion of the measuring instrument 3 located in the cavity 11, effectively reducing the degree of obstruction of the lubricating oil when it flows around the portion of the measuring instrument 3 located in the cavity 11, and at the same time, can effectively reduce the influence of the direct contact between the abrasive particles in the lubricating oil and the portion of the measuring instrument 3 located in the cavity 11 on the normal operation of the measuring instrument 3.

[0061] Furthermore, a sealing member 8 is fixedly mounted on one end of the protection tube 7 near the second mounting opening 14. The sealing member 8 is a circular ring structure, which is elastic and semi-transparent. In this embodiment, the sealing member 8 is preferably made of a semi-transparent rubber material.

[0062] After the seal 8 is fixedly installed on the protective tube 7, the sum of the length dimension of the protective tube 7 and the dimension in the axial direction of the protective tube 7 is equal to the length dimension of the portion of the measuring instrument 3 located in the cavity 11; the axis of the seal 8 coincides with the axis of the protective tube 7, the inner surface of the seal 8 will fit and abut against the outer surface of the end of the portion of the measuring instrument 3 located in the cavity 11, and the seal 8 is in a state of being squeezed by the measuring instrument 3.

[0063] At this time, the seal 8 can effectively prevent the lubricating oil from entering from the gap between the protection tube 7 and the portion of the measuring instrument 3 located in the cavity 11 , thereby further protecting the portion of the measuring instrument 3 located in the cavity 11 .

[0064] Furthermore, it is preferred that the illumination range of the light emitting device 4 in the cavity 11 can cover the sealing member 8 .

[0065] At this time, when the light-emitting instrument 4 illuminates in the cavity 11, the seal 8 is illuminated to refract and scatter the light, so that the illumination range of the light-emitting instrument 4 in the cavity 11 is expanded and the lighting effect in the space between the measuring instrument 3 and the light-emitting instrument 4 is enhanced, so that the measuring instrument 3 can measure the abrasive content in the lubricating oil more accurately, and at the same time, it can further facilitate the staff to observe the situation inside the cavity 11 through the observation window 5.

[0066] The implementation principle of a flow cell with the function of measuring lubricating oil wear particles in the embodiment of the present application is as follows: During the flow of the lubricating oil in the cavity 11, it can be separated from the part of the measuring instrument 3 located in the cavity 11 under the prevention of the protective tube 7 and the sealing member 8, thereby effectively protecting the measuring instrument 3 and reducing the influence of the lubricating oil on the measuring instrument 3; at the same time, it can reduce the resistance encountered by the lubricating oil when flowing through the surrounding of the measuring instrument 3 in the cavity 11, making the flow of the lubricating oil in the cavity 11 smoother.

[0067] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flow cell with the function of measuring lubricating oil wear particles, characterized in that: It includes a measuring body (1), two pipes (2), a measuring instrument (3) and a light-emitting instrument (4); The measuring body (1) is in the form of a rectangular parallelepiped structure as a whole, and has a rectangular parallelepiped cavity (11) in the center thereof, and the length direction and width direction of the cavity (11) are respectively parallel to the length direction and width direction of the measuring body (1); the cavity (11) passes through two sides of the measuring body (1) to form two flow openings (12), and the two flow openings (12) are aligned in the horizontal direction; The two pipes (2) are respectively arranged on both sides of the measuring body (1), and the pipes (2) are connected to the cavity (11) through the corresponding flow openings (12); the pipe (2) has a round structure, one end connected to the measuring body (1) is square and the other end is round; the internal space of the pipe (2) transitions from round to square in a direction close to the measuring body (1), and the inner wall of the end of the pipe (2) connected to the measuring body (1) is flush with the wall of the flow opening (12); The measuring body (1) has a first mounting opening (13) and a second mounting opening (14) respectively centrally formed on two side surfaces along its height direction, the first mounting opening (13) being located above the second mounting opening (14), and both the first mounting opening (13) and the second mounting opening (14) being in communication with the cavity (11); The measuring instrument (3) is arranged on the measuring body (1) through the first mounting opening (13), the first mounting opening (13) is sealed, and a portion of the first mounting opening (13) is located in the cavity (11); The light emitting instrument (4) is arranged on the measuring body (1) through the second mounting opening (14), the second mounting opening (14) is sealed, and the surface of the portion located in the second mounting opening (14) is flush with the inner wall of the cavity (11).

2. A flow cell with the function of measuring lubricating oil wear particles according to claim 1, characterized in that: One end of the pipe (2) connected to the measuring body (1) has a plug-in portion (21), and the surface of the measuring body (1) has a plug-in groove (17) matched with the plug-in portion (21) at the outer edge of the flow opening (12).

3. A flow cell with the function of measuring lubricating oil wear particles according to claim 2, characterized in that: After the pipe (2) and the measuring body (1) are plugged into each other, a clearance groove (6) is formed between the pipe (2) and the measuring body (1) to facilitate welding operations.

4. The flow cell with the function of measuring lubricating oil wear particles according to claim 1, characterized in that: It also includes two observation windows (5); the measuring body (1) is provided with observation ports (15) on both sides except for the location of the flow port (12); the observation windows (5) are arranged in the corresponding observation ports (15), the observation ports (15) are sealed, and the end faces thereof close to the cavity (11) are flush with the inner wall of the cavity (11).

5. The flow cell with the function of measuring lubricating oil wear particles according to claim 4, characterized in that: A side wall of the observation port (15) close to the second mounting port (14) is flush with an inner wall of the cavity (11) close to the second mounting port (14), and the observation port (15) is aligned with a portion of the measuring instrument (3) in the cavity (11) and a space between the light emitting instrument (4) along its opening direction.

6. The flow cell with the function of measuring lubricating oil wear particles according to claim 5, characterized in that: The measuring body (1) has a plurality of first transition surfaces (16) at the corners of the cavity (11) close to the second mounting opening (14), and two ends of the first transition surfaces (16) are respectively connected to the square inner wall of the pipe (2) and the wall of the observation opening (15).

7. A flow cell with the function of measuring lubricating oil wear particles according to claim 6, characterized in that: The inner wall of the pipe (2) has four second transition surfaces (22), the second transition surfaces (22) extending along the square edge of the pipe (2) and radially extending in a direction close to the cavity (11), and one end of the second transition surface (22) close to the cavity (11) is connected to the adjacent first transition surface (16).

8. The flow cell with the function of measuring lubricating oil wear particles according to claim 1, characterized in that: A protective tube (7) with a smooth surface is also provided inside the measuring body (1); the protective tube (7) is a hollow cylindrical structure, one end of which in the axial direction is connected to the inner wall of the cavity (11) close to the first mounting opening (13), and the axis of the protective tube (7) coincides with the axis of the first mounting opening (13); after the measuring instrument (3) is installed on the measuring body (1), the portion of the measuring instrument (3) located in the cavity (11) is located inside the protective tube (7).

9. The flow cell with the function of measuring lubricating oil wear particles according to claim 8, characterized in that: A semi-transparent and elastic sealing member (8) is provided at one end of the protective tube (7) close to the second mounting opening (14); the sealing member (8) is annular in structure, and its axis coincides with the axis of the protective tube (7); after the measuring instrument (3) and the light-emitting instrument (4) are both mounted on the measuring body (1), the inner side of the sealing member (8) abuts against the end circumference of the portion of the measuring instrument (3) located in the cavity (11) to form a seal, and the illumination range of the light-emitting instrument (4) in the cavity (11) can cover the sealing member (8).

10. The flow cell with the function of measuring lubricating oil wear particles according to claim 1, characterized in that: The maximum radial dimension of the circular area inside the pipe (2) is not greater than the maximum side length dimension of the square area inside the pipe (2).

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