Microphotographic multifunctional oil product detection sensor

Abstract

The utility model discloses a kind of microscopic camera multifunctional oil detection sensors, including the light-shield cylinder of the bottom cover and top cover being respectively arranged at two ends, lamp group is arranged on bottom cover, camera and lens group are arranged on top cover;The inside of light-shield cylinder is provided with fixed light-transmitting sheet and movable light-transmitting sheet, fixed light-transmitting sheet, movable light-transmitting sheet and light-shield cylinder are enclosed to form closed interlayer space, and it is used for flowing through oil in interlayer space.This utility model is filled with oil and fills up interlayer space, provides light source by lamp group, lens group enlargies image, camera shoots enlarged image, then analyze picture, realize the detection of oil pollution degree;By adjusting the interval between movable light-transmitting sheet and fixed light-transmitting sheet, the thickness of oil flat and the pressure in interlayer space can be adjusted, to improve the light-transmitting effect of oil, and promote bubble and water from oil, and then improve the definition of shooting image, improve the accuracy of sensor detection.

Description

Technical Field

[0001] This utility model belongs to the field of oil product testing technology, and in particular relates to a microscopic imaging multifunctional oil product testing sensor. Background Technology

[0002] The quality of the oil directly affects whether the equipment's lubrication system, hydraulic system, sealing oil system, and regulation and safety system can function properly.

[0003] Patent CN109682829A discloses an oil cleanliness detection device, comprising: a sampling pool with an inlet for oil inflow and an outlet for oil outflow; a microscopic image acquisition module for acquiring microscopic images of the oil flowing through the sampling pool; and a processing module for comparing the microscopic images with images of oil in a database at different levels of contamination to determine the oil cleanliness.

[0004] However, in the above technical solutions, the oil may form a thick liquid layer in the sampling pool. A thick liquid layer will blur the image of contaminant particles far from the lens, causing some particles to be unable to be clearly captured. At the same time, an excessively thick liquid layer may cause particles to overlap, making it difficult to distinguish individual particles, resulting in counting or morphological recognition errors. This makes the microscopic image unable to accurately reflect the true distribution and quantity of contaminants in the oil, reducing sampling accuracy and thus reducing the detection accuracy of the sensor.

[0005] Therefore, it is necessary to improve the existing oil detection sensors. Utility Model Content

[0006] The purpose of this invention is to overcome the defects in the existing technology and provide a microscopic imaging multifunctional oil detection sensor, which improves the detection accuracy of the oil detection sensor.

[0007] To achieve the above objectives, the specific technical solution of the microscopic imaging oil detection sensor of this utility model is as follows: A multifunctional oil detection sensor using microscopic imaging, comprising: A light-shielding tube with a bottom cover and a top cover at each end; a light assembly is mounted on the bottom cover, and a camera and a lens assembly are mounted on the top cover. The light-shielding cylinder is internally sealed with a fixed light-transmitting sheet and a movable light-transmitting sheet. The movable light-transmitting sheet is slidably disposed along the axial direction of the light-shielding cylinder, and the fixed light-transmitting sheet is fixedly connected to the light-shielding cylinder. The fixed light-transmitting sheet, the movable light-transmitting sheet, and the light-shielding cylinder together enclose a sealed interlayer space for oil to flow through. A heater is disposed on the fixed light-transmitting sheet.

[0008] Preferably, in order to facilitate the flow of oil through the interlayer space, the light-shielding cylinder is provided with an inlet pipe and an outlet pipe that connect the interlayer space. Both the inlet pipe and the outlet pipe are equipped with valves. A pre-filter and a power pump are also installed on the inlet pipe.

[0009] Preferably, in order to drive the movable light-transmitting sheet to move inside the light-shielding cylinder, a plurality of transmission rods are fixedly connected to the movable light-transmitting sheet. The transmission rods extend parallel to the axial direction of the light-shielding cylinder. A sliding sleeve fixedly connected to the top cover is sleeved on the outer periphery of the transmission rod. A power assembly is provided on the top cover. The power assembly is connected to each of the transmission rods through a transmission assembly.

[0010] Preferably, to improve the stability of the movement of the movable light-transmitting sheet, the transmission assembly includes a gear ring coaxially arranged with the light-shielding cylinder. The gear ring is rotatably mounted on the top cover around its own axis. Each of the transmission rods is evenly distributed around the axis of the light-shielding cylinder. The end of each transmission rod away from the movable light-transmitting sheet has an external threaded section. An internal threaded sleeve is threadedly connected to the external threaded section. The internal threaded sleeve is rotatably mounted on the top cover, and a driven gear that meshes with the gear ring is coaxially arranged on its outer circumference. The gear ring is connected to the power assembly for transmission.

[0011] Preferably, in order to reduce the probability of oil leakage between the movable light-transmitting sheet and the light-shielding cylinder, the movable light-transmitting sheet is sealed to the light-shielding cylinder by a sealing ring, the top cover is sealed to the light-shielding cylinder, and the sliding sleeve is sealed to the transmission rod.

[0012] Preferably, in order to improve the stability of the internal threaded sleeve and at the same time protect the driven gear and the internal threaded sleeve, the internal threaded sleeve is connected to a cylindrical fixing part through a bearing. The fixing part is fixedly connected to the top cover. The internal threaded sleeve and the driven gear are both located inside the fixing part. The fixing part has a notch on the side wall adjacent to the driven gear.

[0013] Preferably, in order to promote the flow of oil inside the interlayer space and improve the uniformity of impurity distribution inside the oil, the transmission rod is a hollow tubular structure, and a piston block is sealed and slidably fitted inside the transmission rod. A stud is provided on the side of the piston block away from the fixed light-transmitting sheet. The stud is threaded to the inside of the transmission rod, and a compression spring is provided between the stud and the piston block. A vent hole is provided on the stud.

[0014] Preferably, in order to prevent the piston block from falling out of the transmission rod, the end face of the piston block is flush with the surface of the movable light-transmitting sheet, and the opening diameter of the end of the transmission rod near the fixed light-transmitting sheet is smaller than the inner diameter of the transmission rod.

[0015] Preferably, in order to guide the flow direction of the oil and further improve the uniformity of impurity distribution inside the oil, the movable light-transmitting sheet is provided with an annular first guide groove and a plurality of second guide grooves on the side adjacent to the fixed light-transmitting sheet. The second guide grooves are located inside the first guide groove and are connected to the first guide groove. Each of the transmission rods is connected to the first guide groove.

[0016] The microscopic imaging oil detection sensor of this invention has the following advantages: oil is injected and fills the interlayer space, a light source is provided by a lamp group, the lens group magnifies the image, and the camera captures the magnified image. After the image is analyzed, the type and quantity of impurities in the oil can be determined, thus realizing the detection of oil contamination. By adjusting the interval between the movable and fixed light-transmitting plates, the thickness of the oil layer and the pressure in the interlayer space can be adjusted. Reducing the oil thickness can improve the light transmission effect of the oil, and reducing the pressure in the interlayer space can promote the precipitation of bubbles and water from the oil, thereby improving the clarity of the captured image and the detection accuracy of the sensor. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the oil detection sensor of this utility model; Figure 2 This is an exploded view of the oil detection sensor of this utility model; Figure 3 This is a schematic diagram of the structure of the bottom cover of this utility model; Figure 4 This is a schematic diagram of the connection structure between the light-shielding tube and the fixed light-transmitting sheet of this utility model; Figure 5 This is a schematic diagram of the installation structure of the inlet pipe and outlet pipe of this utility model; Figure 6 This is a schematic diagram of the connection structure between the movable light-transmitting sheet and the transmission rod of this utility model; Figure 7 This is a schematic diagram of the structure of the movable light-transmitting sheet of this utility model; Figure 8 This is a schematic diagram of the installation structure of the piston block of this utility model; Figure 9 This is a schematic diagram of the top cover of this utility model; Figure 10 This is a schematic diagram of the lens assembly mounting structure of this utility model; Figure 11 This is a cross-sectional view of the top cover of this utility model; Figure 12 This is a schematic diagram of the purification component of this utility model; Explanation of markings in the diagram: 1. Light-shielding tube; 2. Bottom cover; 3. Top cover; 4. Camera; 5. Movable light-transmitting sheet; 6. Fixed light-transmitting sheet; 7. Lens assembly; 8. Transmission assembly; 9. Power assembly; 10. Purification assembly; 101. Inlet pipe; 102. Outlet pipe; 103. Valve; 104. Power pump; 105. Pre-filter; 201. Lamp assembly; 301. Sliding sleeve; 302. Slot; 303. Hand-tightening bolt; 501. Transmission. 502. Rod; 503. Sealing ring; 504. External thread section; 505. First guide groove; 506. Second guide groove; 507. Piston block; 508. Compression spring; 509. Stud; 6000. Heater; 801. Fixing part; 802. Driven gear; 803. Internal thread sleeve; 804. Bearing; 805. Notch; 901. Gear ring; 1001. Sealing cover plate; 1002. Column; 1003. Support block; 1004. Absorption box. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0019] The terms "top surface," "bottom surface," and "full surface" are used with reference to the normal operating state of the sensor and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model.

[0020] like Figure 1 , 2 As shown in Figures 3, 10, and 11, a microscopic imaging multifunctional oil detection sensor includes a light-shielding cylinder 1 with a bottom cover 2 and a top cover 3 at both ends. A lamp assembly 201 is mounted on the bottom cover 2, and a camera 4 and a lens assembly 7 are mounted on the top cover 3. Inside the light-shielding cylinder 1, there is a fixed light-transmitting plate 6 and a movable light-transmitting plate 5. The movable light-transmitting plate 5 slides along the axial direction of the light-shielding cylinder 1. The fixed light-transmitting plate 6, the movable light-transmitting plate 5, and the light-shielding cylinder 1 together form a sealed interlayer space for oil to flow through. A heater 601 is mounted on the fixed light-transmitting plate 6. A slot 302 is provided on the top cover 3, and a purification component 10 is sealed and inserted into the slot 302, extending to the inner side of the light-shielding cylinder 1. Wherein, as... Figure 4 and 5 As shown, the light-shielding cylinder 1 is provided with an inlet pipe 101 and an outlet pipe 102 that connect the interlayer space. A valve 103 is installed on both the inlet pipe 101 and the outlet pipe 102. A pre-filter 105 and a power pump 104 are also installed on the inlet pipe 101.

[0021] The aforementioned sensors are suitable for detecting the contamination level of oil in equipment lubrication systems, hydraulic systems, sealing oil systems, and regulating and safety systems to ensure the normal operation of the equipment. During use, the sensors must be connected to the oil system, allowing the oil to flow through and fill the interlayer space between the movable light-transmitting plate 5 and the fixed light-transmitting plate 6. The lamp assembly 201 and camera 4 are located on opposite sides of the interlayer space. The lamp assembly 201 provides a light source, clearly displaying air bubbles, water, and solid impurities inside the oil. The lens assembly 7 is positioned in front of the lens of the camera 4 for magnified imaging. The camera 4 takes magnified photographs of the oil, which are then analyzed. By combining the imaging characteristics of different types of impurities, the types and quantities of different impurities in the photograph can be distinguished, thereby understanding the degree of oil contamination and ensuring the normal operation of the equipment.

[0022] In this sensor, the light-shielding tube 1, top cover 3, and bottom cover 2 are all made of opaque material, preventing external light from entering the interior after the three are combined. This reduces interference from external light, improves image quality, and ultimately enhances the sensor's accuracy in detecting oil. The movable light-transmitting plate 5 and the fixed light-transmitting plate 6 are both made of transparent material and are positioned perpendicular to the axis of the light-shielding tube 1. Both surfaces of the movable and fixed light-transmitting plates 5 and 6 are flat and of uniform thickness, allowing light to penetrate them more effectively and reducing unnecessary light refraction. This improves the image quality of the camera 4 and further enhances the sensor's accuracy in detecting oil. Typically, the light-shielding tube 1 is placed vertically, allowing the movable light-transmitting plate 5 to penetrate the fixed light-transmitting plate 6 more effectively. The light-transmitting plate 5 and the fixed light-transmitting plate 6 are in a horizontal position, with the fixed light-transmitting plate 6 located at the bottom. The inlet pipe 101 and the outlet pipe 102 are both connected to the bottom of the fixed light-transmitting plate 6. This facilitates the discharge of oil from the interlayer space and allows the oil to spread more evenly within the interlayer space, reducing the accumulation of impurities caused by sedimentation and improving the clarity of impurity display during sampling. The pre-filter 105 filters large particles of impurities to reduce their interference with subsequent detection and improve detection accuracy. The pre-filter 105 can be equipped with a transparent shell for easy observation of the types of large particles of impurities to understand the degree of oil contamination. The power pump 104 drives the oil flow, promoting... The oil flows through the sensor's interior for convenient subsequent detection. The sensor is used as follows: First, connect the inlet pipe 101 to the oil circuit, allowing oil to enter the sensor until it overflows from the outlet pipe 102, filling the inlet pipe 101, the interlayer space, and the outlet pipe 102, thus expelling any air inside. Then, connect the outlet pipe 102 to the oil circuit and connect the sensor in parallel to the oil circuit. This process fills the sensor's interior with oil and removes any remaining air, reducing interference from residual air in subsequent detection. The sensor can then detect the oil normally. Adjust the gap between the movable light-transmitting plate 5 and the fixed light-transmitting plate 6 to ensure the sensor is fully filled with oil. In the interlayer space, the two valves 103 are closed to seal the interlayer space, allowing for oil sampling. Supplemental lighting is then provided by the lamp assembly 201, and an image of the oil sample is captured by the camera 4. Analysis of the image reveals the degree of oil contamination. This method enables continuous and rapid oil detection, improving the convenience and efficiency of sensor detection. The heater 601, in conjunction with a temperature sensor, controls the temperature of the oil within the interlayer space. Temperature control stabilizes the physical properties of the oil, ensuring consistent water and gas exudation and improving detection repeatability and accuracy. Maintaining smooth disc movement prevents oil temperature from affecting oil viscosity and interfering with spacing control, ensuring a stable detection process.

[0023] The top cover 3, the light-shielding tube 1, and the movable light-transmitting plate 5 form a sealed chamber. Oil seeps into this chamber and evaporates under the heat generated by the friction of the movable light-transmitting plate 5, forming oil vapor and water vapor. The oil vapor and water vapor adhere to the lens group 7 and the movable light-transmitting plate 5, causing contamination and affecting the clarity of the image captured by the camera 4 and the detection accuracy of the sensor. To address this, a purification component 10 is provided to absorb the oil vapor and water vapor inside the chamber, thereby maintaining the cleanliness of the lens group 7 and the movable light-transmitting plate 5 for a long time, improving the clarity of the image captured by the camera 4, and ultimately improving the detection accuracy of the sensor. Furthermore, the purification component 10 is plugged into the slot 302, which facilitates the replacement and maintenance of the purification component, improving the ease of use of the sensor.

[0024] Compared with existing light-blocking methods, the above-mentioned sensor can detect oil liquid continuously and rapidly, improving detection efficiency and convenience. The movable light-transmitting plate 5 can adjust the thickness of the interlayer space, thereby adjusting the thickness of the oil liquid in the interlayer space. By controlling the thickness of the oil liquid distribution, it has better light transmittance, improving the clarity of the photographic sampling and enhancing the detection accuracy. When valve 103 is open, the movement of the movable light-transmitting plate 5 can assist in the injection and discharge of oil in the interlayer space, improving detection efficiency. When valve 103 is closed, the movement of the movable light-transmitting plate 5 can adjust the pressure in the interlayer space. Of course, a pressure sensor can be used to detect the pressure in the interlayer space. When the pressure decreases, it can promote the precipitation of air and water in the oil, and the air bubbles will increase in size, improving the clarity of the photographic sampling and further enhancing the detection accuracy.

[0025] In the aforementioned sensor, multiple lamp groups 201 are evenly distributed around the axis of the light-shielding cylinder 1. The lamp groups 201 include blue and white light sources. Because blue light has a shorter wavelength and higher energy, its scattering effect in oil is more significant. When blue light shines on the surface of the bubble, the light undergoes strong reflection and scattering, forming a clear bright boundary, thus making the bubble clearer. Furthermore, water absorbs blue light more strongly than oil and has poor light transmittance. Therefore, under blue light, water droplets will appear darker, contrasting with the oil, thus making the water clearer. White light can fully reflect the color, shape, and texture of impurities and is suitable for detecting solid particles of different materials, such as metals, dust, and fibers. Under white light, the color difference between impurities and oil is more obvious, making it easier to determine the type of impurity by color and shadow. Therefore, solid impurities can be clearly displayed. By taking pictures under different colored lights, the accuracy of detecting different types of impurities can be improved, thereby enhancing the sensor's detection effect.

[0026] Further improvements include, for example Figure 11As shown, the transmission assembly 8 includes a gear ring 901 coaxially arranged with the light-shielding cylinder 1. The gear ring 901 is rotatably mounted on the top cover 3 around its own axis. Each transmission rod 501 is evenly distributed around the axis of the light-shielding cylinder 1. The end of the transmission rod 501 away from the movable light-transmitting sheet 5 has an external thread section 503. An internal thread sleeve 803 is threadedly connected to the external thread section 503. The internal thread sleeve 803 is rotatably mounted on the top cover 3, and a driven gear 802 that meshes with the gear ring 901 is coaxially arranged on its outer circumference. The gear ring 901 is connected to the power assembly 9 for transmission.

[0027] In this sensor, three transmission rods 501 are provided. The power assembly 9 includes a servo motor fixed on the top cover 3. A drive gear is fixedly connected to the shaft of the servo motor. During operation, the servo motor drives the drive gear to rotate, which in turn drives the gear ring to rotate. Then, the gear ring drives the three driven gears 802 to rotate synchronously, thereby causing the three internal threaded sleeves 803 to rotate synchronously. Through the mutual cooperation between the internal threaded sleeves 803 and the external threaded section 503, the three transmission rods 501 are raised and lowered synchronously, thereby driving the movable light-transmitting sheet 5 to rise and fall. By raising and lowering the three triangularly distributed transmission rods 501 synchronously, the movable light-transmitting sheet 5 can be kept horizontal during the raising and lowering process, improving the stability of the movement of the movable light-transmitting sheet 5. This maintains the sealing performance between the movable light-transmitting sheet 5 and the light-shielding cylinder 1, preventing oil leakage. It also maintains the parallel state between the movable light-transmitting sheet 5 and the fixed light-transmitting sheet 6, reducing light refraction, thereby improving the effect of image sampling and enhancing the accuracy of sensor detection.

[0028] Further improvements include, for example Figure 2 As shown, the movable light-transmitting sheet 5 is sealed to the light-shielding cylinder 1 through the sealing ring 502, the top cover 3 is sealed to the light-shielding cylinder 1, and the sliding sleeve 301 is sealed to the transmission rod 501. Specifically, sealing rings can be installed between the top cover 3 and the light shield 1, and between the sliding sleeve 301 and the transmission rod 501, to achieve a sealing effect. The top cover 3 can be made of a material with high transparency, so that the camera 4 can take pictures through the top cover without opening it, and it can also effectively improve the sealing effect of the top cover 3. Before the top cover 3 is put on, the movable light-transmitting sheet 5 and the fixed light-transmitting sheet 6 are kept in a close fit. Then the top cover 3 is put on, so that the top cover 3, the light shield 1 and the movable light-transmitting sheet 5 form a sealed space. During subsequent use, as the movable light-transmitting sheet 5 moves, the air pressure inside the sealed space increases to a positive pressure state. At this time, the positive pressure can prevent the probability of oil seeping into the sealed space from the gap between the movable light-transmitting sheet 5 and the light shield 1, thereby improving the dynamic sealing effect between the movable light-transmitting sheet 5 and the light shield 1, and improving the reliability of the sensor.

[0029] Further improvements include, for example Figure 9 and 11As shown, the internal threaded sleeve 803 is connected to a cylindrical fixing part 801 via a bearing 804. The fixing part 801 is fixedly connected to the top cover 3. Both the internal threaded sleeve 803 and the driven gear 802 are located inside the fixing part 801. A notch 805 is provided on the side wall of the fixing part 801 adjacent to the driven gear 802. The fixing part 801 covers both the internal threaded sleeve 803 and the driven gear 802 inside, which can prevent accidental contact by the human body and improve the safety of the equipment. At the same time, it can prevent the internal threaded sleeve 803 and the driven gear 802 from contacting other nearby parts or foreign objects, avoiding damage to the internal threaded sleeve 803 and the driven gear 802 or obstruction of rotation, and ensuring the normal operation of the sensor.

[0030] Further improvements include, for example Figure 8 As shown, the transmission rod 501 is a hollow tubular structure. A piston block 506 is sealed and slidably fitted inside the transmission rod 501. A stud 508 is provided on the side of the piston block 506 away from the fixed light-transmitting sheet 6. The stud 508 is threaded into the inside of the transmission rod 501. A compression spring 507 is provided between the stud 508 and the piston block 506. A vent hole is provided on the stud 508 to keep the air pressure on the side of the piston block 506 away from the interlayer space consistent with the atmospheric pressure, thereby reducing the resistance to the movement of the piston block 506. The end face of the piston block 506 is flush with the surface of the movable light-transmitting sheet 5. The opening diameter of the end of the transmission rod 501 near the fixed light-transmitting sheet 6 is smaller than the inner diameter of the transmission rod 501 to prevent the piston block 506 from coming off the end of the transmission rod 501.

[0031] In the aforementioned sensor, the tubular transmission rod 501 connects the outside of the light-shielding cylinder 1 with the interlayer space. The piston block 506 therein acts as a seal for the transmission rod 501, thus forming a buffer space inside the transmission rod 501. This buffer space can temporarily store the oil inside the interlayer space to prevent leakage of the oil inside the interlayer space due to excessive pressure when the movable light-transmitting sheet 5 moves, thus playing a pressure-limiting role. Under normal conditions, the end face of the piston block 506 is flush with the surface of the movable light-transmitting sheet 5, which facilitates the discharge of air or oil inside the interlayer space when the movable light-transmitting sheet 5 is in contact with the fixed light-transmitting sheet 6. The compression spring 507 is used to press the piston block 506, and different pressures can be generated by changing different models of the compression spring 507.

[0032] Its specific working principle is as follows: When the movable light-transmitting sheet 5 moves towards the fixed light-transmitting sheet 6, the oil pressure inside the interlayer space increases. When the oil pressure exceeds the thrust of the compression spring 507, the compression spring 507 is compressed, and the piston block 506 is pushed, allowing oil to enter the interior of the transmission rod 501. In this way, the maximum oil pressure inside the interlayer space can be limited, reducing the probability of oil leakage. When the movable light-transmitting sheet 5 moves away from the fixed light-transmitting sheet 6, the piston block 506 resets. The end of the transmission rod 501 near the movable light-transmitting sheet 5 has a tapered constriction structure, which narrows the opening at the end of the transmission rod 501 near the movable light-transmitting sheet 5, thereby limiting the relative position between the reset piston block 506 and the transmission rod 501, causing the movable light-transmitting sheet 5 to move away from the fixed light-transmitting sheet 6. When moving, the pressure inside the interlayer space can be reduced to a certain extent; and when the above-mentioned movable light-transmitting sheet 5 moves back and forth, the oil repeatedly enters and exits the interior of the transmission rod 501, which can promote the flow of oil inside the interlayer space. Through the flow of oil, impurities in the oil can be dispersed to reduce the stacking of impurities. As a result, when the camera 4 takes pictures and samples, the impurities in the oil can be displayed more clearly, thereby improving the accuracy of detection.

[0033] Further improvements include, for example Figure 7 As shown, the movable light-transmitting sheet 5 has an annular first guide groove 504 and multiple second guide grooves 505 on one side adjacent to the fixed light-transmitting sheet 6. The second guide grooves 505 are located inside the first guide groove 504 and communicate with it. Each transmission rod 501 is also connected to the first guide groove 504. Specifically, during the process of oil entering and exiting the transmission rod 501, the first guide groove 504 and the second guide grooves 505 can guide the direction of oil flow, making the oil mix evenly and achieve uniform distribution within the interlayer space, reducing the accumulation and overlap of impurities in the oil, and improving the detection accuracy of the oil. In fact, protrusions matching the first guide groove 504 and the second guide groove 505 can also be provided on the fixed light-transmitting sheet 6, which can improve the guiding effect of oil flow and improve the uniformity of oil mixing and distribution. Furthermore, when the fixed light-transmitting sheet 6 and the movable light-transmitting sheet 5 are attached, the residue of oil or air inside the interlayer space can be reduced, thereby improving the detection accuracy.

[0034] Further improvements include, for example Figure 12 As shown, the purification component 10 includes a sealing cover plate 1001 covering the slot 302. The sealing cover plate 1001 is fixedly connected to the top cover 3 by a hand-tightening bolt 303. A plurality of columns 1002 are provided on the side of the sealing cover plate 1001 near the top cover 3. The columns 1002 are perpendicular to the sealing cover plate 1001 and pass through the slot 302. A plurality of absorption boxes 1004 are provided between each column 302. The absorption boxes 1004 are arranged at equal intervals along the extension direction of the column 302. A support block 1003 for supporting the absorption box 1004 is provided on the side of the column 302 near the absorption box 1004.

[0035] The sealing cover 1001 is equipped with a sealing ring, which covers the slot 302 to seal the slot 302, maintaining the sealed state of the chamber, reducing the intrusion of external moisture and impurities, and keeping the interior of the chamber clean. The hand-tightening bolt 303 has a studded head, which allows the operator to easily tighten the bolt by hand, thereby facilitating the fixing and separation of the sealing cover 1001 and the top cover 3, improving the ease of installation and removal of the sealing cover 1001. Multiple columns 1002 are arranged along the edge of the slot 302. The columns 1002 and slots 302 are evenly distributed circumferentially, forming a limiting structure between their inner circumferential surfaces. This structure limits the sealing cover 1001, preventing lateral displacement and improving installation stability. Each column 1002 limits the absorption box 1004 from all sides, while the support block 1003 supports the absorption box 1004 from the bottom, allowing for fixed installation. This suspends the absorption box 1004 within the cavity. The absorption box 1004 is a box made of perforated mesh, containing movable... Activated carbon and desiccant can absorb oil and water vapor, thereby maintaining the cleanliness of the lens group 7 and the movable light-transmitting sheet 5, and improving the detection accuracy of the sensor. Multiple absorption boxes 1004 are arranged at intervals, which, compared to a single large absorption box 1004, disperses the activated carbon and desiccant, increasing their distribution range and contact area with air, thus improving the absorption effect of water and oil vapor. When the column 1002 is inserted into the slot 302, the slot 302... The inner wall of the slot 302 limits the column 1002, so that the column 1002 tightly surrounds the absorption box 1004 from all sides, thereby achieving the fixed installation of each absorption box 1004. When the column 1002 is removed from the slot 302, the limitation of the slot 302 on the column 1002 disappears. At this time, the column 1002 can be bent away from the absorption box 1004, thereby separating the absorption box 1004 from the column 1002, which facilitates the replacement of the absorption box 1004 and greatly improves the convenience of sensor maintenance.

[0036] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A multifunctional oil detection sensor using microscopic imaging, characterized in that, include: A light shield tube (1) with a bottom cover (2) and a top cover (3) respectively at both ends. A light group (201) is provided on the bottom cover (2), and a camera (4) and a lens group (7) are provided on the top cover (3). The light-shielding cylinder (1) is internally sealed with a fixed light-transmitting sheet (6) and a movable light-transmitting sheet (5). The movable light-transmitting sheet (5) is slidably disposed along the axial direction of the light-shielding cylinder (1). The fixed light-transmitting sheet (6) is fixedly connected to the light-shielding cylinder (1). The fixed light-transmitting sheet (6), the movable light-transmitting sheet (5) and the light-shielding cylinder (1) together enclose a sealed interlayer space. The interlayer space is used for the flow of oil. A heater (601) is disposed on the fixed light-transmitting sheet (6).

2. The microscopic imaging multifunctional oil detection sensor according to claim 1, characterized in that, The light-shielding tube (1) is provided with an inlet pipe (101) and an outlet pipe (102) that connect the interlayer space. A valve (103) is installed on both the inlet pipe (101) and the outlet pipe (102). A pre-filter (105) and a power pump (104) are also installed on the inlet pipe (101).

3. The microscopic imaging multifunctional oil detection sensor according to claim 1, characterized in that, Multiple transmission rods (501) are fixedly connected to the movable light-transmitting sheet (5). The transmission rods (501) extend parallel to the axial direction of the light-shielding cylinder (1). A sliding sleeve (301) fixedly connected to the top cover (3) is sleeved on the outer periphery of the transmission rods (501). A power assembly (9) is provided on the top cover (3). The power assembly (9) is connected to each of the transmission rods (501) through the transmission assembly (8).

4. The microscopic imaging multifunctional oil detection sensor according to claim 3, characterized in that, The transmission assembly (8) includes a gear ring (901) coaxially arranged with the light-shielding cylinder (1). The gear ring (901) is rotatably arranged on the top cover (3) around its own axis. Each of the transmission rods (501) is evenly distributed around the axis of the light-shielding cylinder (1). The end of the transmission rod (501) away from the movable light-transmitting sheet (5) has an external thread section (503). An internal thread sleeve (803) is threadedly connected to the external thread section (503). The internal thread sleeve (803) is rotatably arranged on the top cover (3), and a driven gear (802) that meshes with the gear ring (901) is coaxially arranged on its outer circumference. The gear ring (901) is connected to the power assembly (9) in a transmission connection.

5. The microscopic imaging multifunctional oil detection sensor according to claim 3, characterized in that, The movable light-transmitting sheet (5) is sealed to the light-shielding cylinder (1) through a sealing ring (502), the top cover (3) is sealed to the light-shielding cylinder (1), and the sliding sleeve (301) is sealed to the transmission rod (501).

6. The microscopic imaging multifunctional oil detection sensor according to claim 4, characterized in that, The internal threaded sleeve (803) is connected to a cylindrical fixing part (801) via a bearing (804). The fixing part (801) is fixedly connected to the top cover (3). The internal threaded sleeve (803) and the driven gear (802) are both located inside the fixing part (801), and the internal threaded sleeve (803) and the driven gear (802) are fixedly connected to each other. The fixing part (801) has a notch (805) on its side wall adjacent to the driven gear (802).

7. The microscopic imaging multifunctional oil detection sensor according to claim 3, characterized in that, The transmission rod (501) is a hollow tubular structure. A piston block (506) is sealed and slidably fitted inside the transmission rod (501). A stud (508) is provided on the side of the piston block (506) away from the fixed light-transmitting sheet (6). The stud (508) is threadedly connected to the inside of the transmission rod (501). A compression spring (507) is provided between the stud (508) and the piston block (506). A vent hole is provided on the stud (508).

8. The microscopic imaging multifunctional oil detection sensor according to claim 7, characterized in that, The end face of the piston block (506) is flush with the surface of the movable light-transmitting sheet (5), and the opening diameter of the end of the transmission rod (501) near the fixed light-transmitting sheet (6) is smaller than the inner diameter of the transmission rod (501).

9. The microscopic imaging multifunctional oil detection sensor according to claim 7, characterized in that, The movable light-transmitting sheet (5) has an annular first guide groove (504) and a plurality of second guide grooves (505) on one side near the fixed light-transmitting sheet (6). The second guide grooves (505) are located inside the first guide groove (504) and are connected to the first guide groove (504). Each of the transmission rods (501) is connected to the first guide groove (504).

Images