Detection sensor and detection method for particulate matters in oil

Abstract

The invention relates to a sensor and a method for detecting particulate matters in oil. The sensor comprises a main body; a channel formed in the main body; the blocking piece is arranged in the channel in a swinging mode in the oil flowing direction; the blocking teeth are formed on the blocking piece in parallel; the light source is arranged in the blocking piece; the photosensitive piece is arranged in the blocking piece; wherein oil flows along the blocking teeth, and the blocking teeth limit particulate matter; light emitted by the light source penetrates through the blocking piece and then is mapped on the light sensing piece. The problems that in an existing scheme, petroleum is flowing, only the density of the particulate matter can be detected in an online detection mode, and other data of the particulate matter cannot be obtained are solved.

Description

Technical Field

[0001] The present invention relates to the field of detection sensors, and in particular to a particle detection sensor in oil and a detection method. Background Art

[0002] In oil transportation pipelines, it is necessary to regularly detect particulate matter in oil to ensure stable movement of valves and actuators during pipeline transportation, and to avoid valve leakage and actuator wear.

[0003] During the test, a certain amount of oil needs to be taken out before the particles are tested, which makes the test efficiency low. If the online test method is adopted, since the oil is flowing, only the density of the particles can be tested, and the shape, thickness and other data of the particles cannot be accurately tested.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a particle detection sensor and a detection method in oil to solve the problem in the prior art that oil is flowing and the online detection method can only detect the density of the particles but cannot obtain other data of the particles.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] A sensor for detecting particles in oil;

[0008] The invention comprises: a main body; a channel formed in the main body; a blocking member swingably arranged in the channel along the oil flow direction; blocking teeth formed in parallel on the blocking member; a light source arranged in the blocking member; and a photosensitive member arranged in the blocking member;

[0009] The oil flows along the blocking teeth, and the blocking teeth restrict particulate matter; the light source irradiates light through the blocking element and then is projected onto the photosensitive element.

[0010] A further technical solution is that the blocking tooth is bent toward the oil inflow direction; the blocking member forms a depression near the blocking tooth; and the blocking tooth is bent toward the depression.

[0011] A further technical solution is that a protrusion is formed on the blocking element, and notches are formed in parallel on the protrusion, and the width of the notches gradually narrows and then gradually expands; the notches spread toward the blocking teeth.

[0012] A further technical solution is that the blocking element includes a gear, a sealing bent plate, a guide plate swingably arranged in the channel, a first power device for driving the gear to rotate, and a rack arranged at the extended position of the sealing bent plate; the sealing bent plates are relatively arranged in the channel and on the guide plate respectively; the sealing bent plates are fitted and sealed to each other to form a space between the channel and the guide plate; the first power device is arranged in the space.

[0013] A further technical solution is that a guide block is formed in the channel; and the guide plate is swingably arranged on the guide block.

[0014] A further technical solution is that a light-transmitting member is arranged in the recess; the photosensitive member is arranged in the space and shields one side of the light-transmitting member; and the light source is arranged in the space and irradiates light to the other side of the light-transmitting member.

[0015] A further technical solution is that the light source includes a lamp bead swingably arranged in the space and a reflective surface arranged on the blocking tooth; the lamp bead irradiates light to the reflective surface, and the reflective surface reflects the light through the light-transmitting member and is mapped onto the photosensitive member.

[0016] A method for detecting particles in oil comprises the following steps:

[0017] Adjustment steps: determine the swing angle of the guide plate according to the flow rate of the oil; the first power device drives the gear to rotate, pushes the sealing bent plates closer to or farther from each other through the meshing rack, and adjusts the guide plate to the set angle;

[0018] Setting steps: setting the detection interval time and detection times of the photosensitive component, and setting the irradiation angle of the light source;

[0019] Detection steps: the photosensitive element detects particles according to the set data; the lamp beads adjust the swing angle according to the set data.

[0020] Compared with the prior art, the beneficial technical effects of the present invention are as follows: (1) after the oil flows through the channel, the particles in the oil are blocked by the blocking teeth, and the particles gradually fall into the depression, and the depression collects the particles in the oil, thereby preventing the particles in the oil from being in a flowing state, resulting in inaccurate detection;

[0021] The width gradually narrows from the left end of the gap to the middle position of the gap, and gradually expands from the middle position of the gap to the right end of the gap; the width of the left end of the gap is larger, and more oil enters the gap. The oil is squeezed in the middle position of the gap and diffuses faster. The particles with a faster flow rate are blocked by the blocking teeth and rush into the depression to complete the collection; through the collection of the particles, the projection and reflection formed by the particles after the light source irradiates the light are clear, which is convenient for accurately calculating the parameters of the projection and reflection, and the cross-sectional size of the particles and the thickness of the particles can be calculated.

[0022] (2) The guide plate is swingably arranged on the guide block, and the guide block guides the oil to avoid the swing connection position of the guide plate, thereby preventing the oil from scouring the swing connection position of the guide plate, so that the oil enters the space and ensures the sealing of the space; the oil first contacts the guide block and then decelerates, and then flows along the guide plate, thereby preventing the oil flow rate from scouring the particles in the depression at a fast speed.

[0023] (3) The second power device drives the driving gear to rotate, and the driving gear meshes to drive the fan gear to rotate, and the fan gear drives the bracket to swing, and the lamp beads illuminate the reflective surface from different angles, and the light reflected by the reflective surface illuminates the particles from different angles; the lamp beads emit a group of light rays that directly illuminate the particles at an angle, which will form a reflection at the edge of the particle projection, and another group of light rays is reflected by the reflective surface and illuminates the particles from another angle to form a projection of the particles, and due to the projection of the other group of light rays, the reflection brightness of the edge of the particle projection increases, making the projection darker and the reflection brighter, and there is an obvious change in the brightness of the projection and reflection; by calculating the projection and reflection area and shape, and the irradiation angle of the light, the cross-sectional size of the particle and the thickness of the particle can be known. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The schematic diagram of the structure of the oil particle detection sensor according to the first embodiment of the present invention is shown.

[0025] Figure 2 The enlarged structural diagram of the position of the blocking element in the first embodiment of the present invention is shown.

[0026] Figure 3 It shows an enlarged structural schematic diagram of the light source position in the first embodiment of the present invention.

[0027] Markings in the accompanying drawings: 1. main body; 2. channel; 21. guide block; 3. blocking member; 31. depression; 311. light-transmitting member; 32. protrusion; 33. notch; 34. guide plate; 341. cover body; 342. bracket; 343. fan-shaped gear; 344. second power device; 345. driving gear; 35. sealing bent plate; 36. gear; 37. first power device; 38. rack; 39. space; 4. blocking gear; 5. light source; 51. lamp bead; 52. reflecting surface; 6. photosensitive member. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention clearer, the device proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0029] First embodiment:

[0030] Figure 1 The schematic diagram of the structure of the oil particle detection sensor according to the first embodiment of the present invention is shown. Figure 2 FIG. 1 is a schematic diagram showing an enlarged structure of the position of the blocking member in the first embodiment of the present invention. Figure 1 and Figure 2 As shown, the present invention discloses a sensor for detecting particles in oil.

[0031] The oil particle detection sensor includes: a main body 1, a channel 2 formed in the main body 1, a blocking member 3 swingably arranged in the channel 2 along the oil flow direction, blocking teeth 4 formed in parallel on the blocking member 3, a light source 5 arranged in the blocking member 3 and a photosensitive member 6 arranged in the blocking member 3.

[0032] The oil flows along the blocking teeth 4, which restrict the particles. The light source 5 irradiates light through the blocking element 3 and then maps it on the photosensitive element 6. The photosensitive element 6 obtains the content and size of particles in the oil by analyzing the image data.

[0033] The channel 2 is formed in the main body 1 in the left and right directions, and the oil flows into the left end of the channel 2, and the oil flows out of the right end of the channel 2. Exemplarily, there are multiple groups of resistance members 3. Multiple groups of resistance members 3 can detect particles in the oil at the same time, ensuring the accuracy of the detection results.

[0034] The blocking tooth 4 is bent toward the oil inflow direction, and the blocking tooth 4 is bent to the left to form an arc shape. A recess 31 is formed near the blocking tooth 4 of the blocking member 3 , and the bending of the blocking tooth 4 is toward the recess 31 .

[0035] After the oil flows through the channel 2, the particles in the oil are blocked by the blocking teeth 4, and the particles gradually fall into the recess 31. The recess 31 collects the particles in the oil to prevent the particles in the oil from being in a flowing state, which leads to inaccurate detection.

[0036] The blocking member 3 has protrusions 32 formed on the front and rear sides, and the protrusions 32 are located on the left side of the recess 31. The protrusions 32 are formed in parallel with notches 33, and the width of the notches 33 gradually narrows and then gradually expands, and the spread of the notches 33 is toward the blocking tooth 4.

[0037] The width of the notch 33 gradually narrows from the left end to the middle of the notch 33, and gradually expands from the middle of the notch 33 to the right end of the notch 33. The left end of the notch 33 is wider, and more oil enters the notch 33. The oil is squeezed and diffused faster after passing through the middle of the notch 33. The particles with a faster flow rate are blocked by the blocking teeth 4 and then rushed into the recess 31 to complete the collection.

[0038] By collecting the particles, the projection and reflection of the particles after the light source 5 irradiates the light are clear, which facilitates the accurate calculation of the projection and reflection parameters, and the cross-sectional size of the particles and the thickness of the particles can be calculated.

[0039] The blocking member 3 includes a gear 36, a sealing bent plate 35, a guide plate 34 swingably arranged in the channel 2, a first power device 37 driving the gear 36 to rotate, and a rack 38 arranged at the extended position of the sealing bent plate 35. The sealing bent plates 35 are relatively arranged in the channel 2 and on the guide plate 34. The sealing bent plates 35 are mutually attached and sealed, and a space 39 is formed between the channel 2 and the guide plate 34. The first power device 37 is arranged in the space 39.

[0040] Exemplarily, the sealing curved plates 35 are in two groups. Exemplarily, the sealing curved plates 35 are telescopic plates. One group of sealing curved plates 35 is connected to the guide plate 34, and the other group of sealing curved plates 35 is connected to the channel 2. The two groups of sealing curved plates 35 fit each other so that a sealed space is formed in the space 39. Exemplarily, the first power device 37 is a motor. Exemplarily, the rack 38 is in an arc shape. The gear 36 meshes with the rack 38.

[0041] The first power device 37 drives the gear 36 to rotate, and the gear 36 engages and pushes the rack 38 , and the rack 38 drives one group of sealing bent plates 35 to slide up and down along another group of sealing bent plates 35 .

[0042] A guide block 21 is formed in the channel 2, and the guide block 21 forms an inclined surface close to the oil inflow direction. The guide plate 34 is swingably set on the guide block 21, and the oil is guided by the guide block 21 to avoid the swing connection position of the guide plate 34, so that the oil is prevented from washing the swing connection position of the guide plate 34, so that the oil enters the space 39, ensuring the sealing of the space 39.

[0043] The oil first contacts the guide block 21 to be decelerated, and then flows along the guide plate 34 , so as to prevent the oil from washing away the particles in the depression 31 at a high flow rate.

[0044] Figure 3 FIG. 1 is a schematic diagram showing an enlarged structure of the light source position in the first embodiment of the present invention. Figure 1-Figure 3 As shown, a light-transmitting member 311 is disposed in the recess 31, and the light-transmitting member 311 is located at the bottom of the recess 31. The photosensitive member 6 is disposed in the space 39 and shields one side of the light-transmitting member 311. The light source 5 is disposed in the space 39 and irradiates light to the other side of the light-transmitting member 311.

[0045] The light source 5 includes a lamp bead 51 swingably disposed in the space 39 and a reflective surface 52 disposed on the blocking tooth 4. The lamp bead 51 irradiates light to the reflective surface 52, and the reflective surface 52 reflects the light through the light-transmitting member 311 and is mapped on the photosensitive member 6.

[0046] A cover body 341 is disposed on the guide plate 34, and a bracket 342 is swingably disposed in the cover body 341. The lamp beads 51 are disposed on the bracket 342. The bracket 342 is provided with a sector gear 343.

[0047] The second power device 344 and the driving gear 345 are arranged in the space 39. The driving gear 345 meshes with the sector gear 343. The second power device 344 drives the driving gear 345 to rotate, the driving gear 345 meshes with the sector gear 343 to rotate, the sector gear 343 drives the bracket 342 to swing, the lamp bead 51 illuminates the reflecting surface 52 from different angles, and the light reflected by the reflecting surface 52 illuminates the particles from different angles.

[0048] The lamp bead 51 emits two groups of light, one group of light directly shines on the particles at an angle, forming a reflection at the edge of the particle projection, and the other group of light shines on the particles from another angle after being reflected by the reflective surface 52, forming a projection of the particles, and the projection of the other group of light increases the reflection brightness at the edge of the particle projection. This makes the projection darker and the reflection brighter, and there is a significant change in the brightness of the projection and reflection. By calculating the projection and reflection area and shape, and the angle of light illumination, the cross-sectional size of the particles and the thickness of the particles can be known.

[0049] Second embodiment:

[0050] The method for detecting particles in oil comprises the following steps:

[0051] Adjustment steps: Determine the swing angle of the guide plate 34 according to the flow rate of the oil. The faster the flow rate of the oil, the smaller the swing angle of the guide plate 34. The slower the flow rate of the oil, the larger the swing angle of the guide plate 34. A large swing angle of the guide plate 34 can speed up the flow rate of the oil. By swinging the guide plate 34, the oil flow rate can be controlled. When the flow rate of the oil is fast, the oil will flush the particles in the recess 31. When the flow rate of the oil is slow, the particles in the oil will not impact on the blocking tooth 4, and thus fall into the recess 31.

[0052] The first power device 37 drives the gear 36 to rotate, and pushes the sealing bent plates 35 to move closer to or away from each other through the meshing rack 38, thereby adjusting the guide plate 34 to a set angle.

[0053] Setting steps: setting the detection interval time and detection times of the photosensitive member 6, and setting the irradiation angle of the light source 5. By performing a detection once at a certain interval within a certain number of times, the change of particles in the oil within a period of time can be known.

[0054] Detection steps: the photosensitive element 6 detects the particles according to the set data, and the lamp bead 51 adjusts the swing angle according to the set data.

[0055] In a single detection, the light source 5 is set to swing within a certain range, and the photosensitive element 6 detects the change of the shadow of the particle to determine the thickness of the particle.

[0056] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A sensor for detecting particles in oil, characterized in that: include: Subject (1); a channel (2) formed in the body (1); A resistance member (3) is swingably disposed in the passage (2) along the oil flow direction; Blocking teeth (4) are formed in parallel on the blocking element (3); A light source (5) is arranged in the blocking element (3); A photosensitive element (6) is arranged inside the blocking element (3); The oil flows along the blocking teeth (4), and the blocking teeth (4) restrict the particles; the light source (5) irradiates light that passes through the blocking element (3) and is then reflected on the photosensitive element (6).

2. The oil particle detection sensor according to claim 1, characterized in that: The blocking tooth (4) is bent in the direction of oil inflow; the blocking element (3) forms a recess (31) near the blocking tooth (4); and the blocking tooth (4) is bent toward the recess (31).

3. The oil particle detection sensor according to claim 2, characterized in that: A protrusion (32) is formed on the blocking element (3), and notches (33) are formed in parallel on the protrusion (32). The width of the notches (33) gradually narrows and then gradually expands; the notches (33) spread toward the blocking tooth (4).

4. The oil particle detection sensor according to claim 2, characterized in that: The blocking member (3) comprises a gear (36), a sealing bent plate (35), a guide plate (34) swingably arranged in the channel (2), a first power device (37) driving the gear (36) to rotate, and a rack (38) arranged at an extended position of the sealing bent plate (35); the sealing bent plates (35) are relatively arranged in the channel (2) and on the guide plate (34) respectively; the sealing bent plates (35) are mutually fitted and sealed to form a space (39) between the channel (2) and the guide plate (34); the first power device (37) is arranged in the space (39).

5. The oil particle detection sensor according to claim 4, characterized in that: A guide block (21) is formed in the channel (2); the guide plate (34) is swingably disposed on the guide block (21).

6. The oil particle detection sensor according to claim 4, characterized in that: A light-transmitting member (311) is disposed in the recess (31); the light-sensitive member (6) is disposed in the space (39) and shields one side of the light-transmitting member (311); and the light source (5) is disposed in the space (39) and irradiates light toward the other side of the light-transmitting member (311).

7. The oil particle detection sensor according to claim 6, characterized in that: The light source (5) comprises a lamp bead (51) swingably arranged in the space (39) and a reflective surface (52) arranged on the blocking tooth (4); the lamp bead (51) irradiates light to the reflective surface (52), and the reflective surface (52) reflects the light through the light-transmitting member (311) and is projected onto the photosensitive member (6).

8. A method for detecting particles in oil, characterized in that: The steps include: Adjustment steps: determining the swing angle of the guide plate (34) according to the flow rate of the oil; the first power device (37) drives the gear (36) to rotate, and pushes the sealing bent plates (35) to move closer to or away from each other through the meshing rack (38), thereby adjusting the guide plate (34) to a set angle; Setting steps: setting the detection interval time and detection times of the photosensitive member (6), and setting the irradiation angle of the light source (5); Detection steps: the photosensitive element (6) detects particulate matter according to the set data; the lamp bead (51) adjusts the swing angle according to the set data.

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