Multifunctional integrated structure for oil detection

Abstract

The utility model discloses a multifunctional integrated structure for oil detection, and belongs to the technical field of oil detection, the multifunctional integrated structure comprises a box body, a first cavity and a second cavity which are arranged in the box body, and a density detection module and a cloud point detection module which are respectively arranged in the first cavity and the second cavity; the multifunctional integrated structure further comprises a connecting structure which penetrates through the first cavity and the second cavity, is connected with an oil outlet pipe of the density detection module and an oil inlet pipe of the cloud point detection module and is used for guiding oil in the density detection module into the cloud point detection module. According to the multifunctional integrated structure for oil detection, the density detection module and the cloud point detection module are directly communicated by arranging the connecting structure, so that oil subjected to density detection can directly flow into the cloud point detection module, independent repeated sampling for detection is not needed, the detection process is simplified, and waste of oil samples is reduced.

Description

Technical Field

[0001] This application relates to the field of oil detection technology, specifically a multifunctional integrated structure for oil detection. Background Technology

[0002] In many fields such as military equipment operation support and industrial production, fuel is a key energy substance, and its quality directly affects the stability, efficiency and safety of equipment operation. Therefore, accurate and efficient testing of fuel performance indicators is of paramount importance for ensuring the smooth conduct of military operations and the stable operation of industrial production.

[0003] Chinese utility model patent CN218629389U discloses a multifunctional integrated structure for oil testing. By integrating a density detection module and a cloud point detection module into one unit, it achieves dual-indicator detection of oil performance—density and cloud point—providing a more convenient measurement method. However, this method requires separate density and cloud point tests on the oil sample, making the process cumbersome and time-consuming. Furthermore, the repeated sampling for density and cloud point detection significantly increases the consumption of oil samples, resulting in resource waste.

[0004] Therefore, this application provides a multifunctional integrated structure for oil detection to solve the above problems. Utility Model Content

[0005] This application provides a multi-functional integrated structure for oil detection, which aims to solve the problems of existing multi-functional integrated structures for oil detection mentioned in the background art, such as the need to detect density and cloud point separately, which leads to cumbersome and time-consuming processes, and repeated sampling which increases sample consumption, wastes resources and increases detection costs.

[0006] To achieve the above objectives, this application provides the following technical solution: a multi-functional integrated structure for oil detection, comprising a housing, a first cavity and a second cavity disposed within the housing, and a density detection module and a cloud point detection module respectively disposed within the first cavity and the second cavity;

[0007] The multifunctional integrated structure also includes a connecting structure that runs through the first and second cavities and connects to the oil outlet pipe of the density detection module and the oil inlet pipe of the cloud point detection module to guide the oil in the density detection module to the cloud point detection module; a filter screen disposed within the connecting structure for filtering the oil in the density detection module; and an elastic structure disposed within the connecting structure for buffering the filtered oil. By setting the connecting structure to directly connect the density detection module and the cloud point detection module, the oil that has completed density detection can directly flow into the cloud point detection module without the need for separate and repeated sampling for testing. This not only simplifies the testing process but also reduces the waste of oil samples. At the same time, the filter screen can filter impurities in the oil, preventing impurities from entering the cloud point detection module and interfering with the testing process, thus ensuring the accuracy of the test results. The elastic structure buffers the filtered oil to ensure the stability of the oil entering the cloud point detection module, further ensuring the reliability and accuracy of the cloud point detection results.

[0008] Preferably, to facilitate the direct flow of oil from the density detection module into the cloud point detection module, the connecting structure includes a horizontal pipe disposed within the first cavity and fixedly connected to the oil outlet pipe, a connecting pipe passing through the first and second cavities and fixedly connected at both ends to one side of the horizontal pipe and the top of the oil inlet pipe, and a piston slidably connected within the horizontal pipe for moving with the impact of the oil to connect the horizontal pipe and the connecting pipe. The filter screen is fixedly disposed inside the connecting pipe near one end of the horizontal pipe. By using the combination of the horizontal pipe, the connecting pipe, and the piston, the oil impacts the piston to move it and connect the horizontal pipe and the connecting pipe, realizing the automatic transfer of oil from the density detection module to the cloud point detection module, improving the continuity of the detection process, and making the detection operation more convenient.

[0009] Preferably, to further buffer the filtered oil, the elastic structure includes an air bladder fixedly disposed inside the connecting pipe near the oil inlet pipe end, an inflation assembly disposed in the first cavity corresponding to the connecting pipe side for inflating or contracting the air bladder, and a transmission structure disposed on the horizontal pipe and connected to the piston and inflation assembly for transmitting the power of the piston to the inflation assembly. The combined design of the air bladder, inflation assembly, and transmission structure allows the transmission structure to drive the inflation assembly to inflate or deflate the air bladder through the movement of the piston. The inflated air bladder can buffer the oil passing through the connecting pipe, preventing the oil from directly impacting the cloud point detection module, making the incoming oil more stable, and helping to improve the stability and accuracy of the detection.

[0010] Preferably, in order to transmit the power of the piston to the inflation assembly, the transmission structure includes a sleeve fixedly disposed inside the side of the horizontal tube away from the connecting pipe, a movable rod slidably connected inside the sleeve and fixedly connected to the side of the piston away from the oil outlet pipe, a rack slidably connected inside the horizontal tube and fixedly connected to one side of the movable rod, and a gear rotatably connected inside the horizontal tube and meshing with the rack. The gear is connected to the inflation assembly. The combined design of the sleeve, movable rod, rack, and gear can convert the linear motion of the piston into the rotation of the gear, thereby driving the inflation assembly to work, ensuring the normal inflation and deflation of the airbag, and achieving effective buffering of the oil.

[0011] Preferably, in order to achieve the reset of piston one, a spring is sleeved on the movable rod, and the two ends of the spring are fixedly connected to the inside of the sleeve rod and the movable rod, respectively; when the oil is completely discharged from the horizontal tube to the connecting tube, the elastic force of the spring can assist piston one to reset and move, block the connection between the horizontal tube and the connecting tube, prevent the oil from flowing back, and at the same time prepare for the next detection cycle.

[0012] Preferably, to achieve inflation and deflation of the airbag, the inflation assembly includes a cylinder fixedly disposed within the first cavity on one side corresponding to the connecting tube, a piston moving longitudinally within the cylinder, a push rod passing through the top of the cylinder and fixedly connected to the piston, a connecting plate fixedly connected to the end of the push rod away from the piston, an air tube disposed at the bottom of the cylinder and communicating with the interior of the cylinder and the airbag at both ends respectively, and a screw passing through the horizontal tube and fixedly connected to the gear. The push rod is slidably connected to the cylinder, the connecting plate is screwed to the screw, and the screw is rotatably connected to the horizontal tube. The combined design of the cylinder, piston, push rod, connecting plate, air tube, and screw can convert the rotation of the gear into the up-and-down movement of the piston, thereby achieving inflation and deflation of the airbag.

[0013] Preferably, in order to ensure the power for the movement of piston one and rack, the multifunctional integrated structure further includes a power auxiliary structure disposed on the horizontal tube, piston one and rack to provide auxiliary power for the movement of piston one and rack; the design of the power auxiliary structure can enhance the power for the movement of piston one, ensuring that piston one can smoothly drive rack for subsequent operations.

[0014] Preferably, to provide power, the power auxiliary structure includes first electromagnets fixedly mounted on the rack and inside the horizontal tube corresponding to one end of the sleeve rod and magnetically attracted to each other; second electromagnets fixedly mounted inside the horizontal tube near one end of the oil outlet pipe and inside the piston near one end of the oil outlet pipe and magnetically attracted to each other; a switch fixedly mounted inside the horizontal tube corresponding to one side of the first electromagnet for contacting the rack to de-energize the two first electromagnets and energize the two second electromagnets; and a switch fixedly mounted inside the horizontal tube corresponding to one side of the second electromagnet for contacting the piston near the oil outlet pipe. The second switch de-energizes the two second electromagnets and energizes the two first electromagnets through end contact. When piston one moves closer to the sleeve rod, the magnetic attraction of the two first electromagnets ensures that piston one can smoothly drive the rack to move, thereby rotating the gear and inflating the airbag. When piston one moves closer to the oil outlet pipe under the restoring force of the spring, the magnetic attraction of the two second electromagnets ensures that piston one can smoothly drive the rack to move in the opposite direction, thereby rotating the gear in the opposite direction and deflating the airbag. This ensures the normal operation of the entire testing process and improves the reliability and stability of the equipment.

[0015] Preferably, in order to control the timing of oil entering the cloud point detection module, a solenoid valve is fixedly installed at one end of the oil inlet pipe near the connecting pipe. A switch three is fixedly installed inside the horizontal pipe on the side corresponding to switch one, which is used to contact the rack to open the solenoid valve. A switch four is fixedly installed inside the horizontal pipe on the side corresponding to switch two, which is used to contact the piston one near the oil outlet pipe to close the solenoid valve. When piston one and rack move close to the sleeve rod to trigger switch three through the magnetic attraction of the two first electromagnets, the solenoid valve opens, allowing oil to enter. After the detection is completed, when piston one returns to the oil outlet pipe through the magnetic attraction of the two second electromagnets, it triggers switch four, and the solenoid valve closes to prevent oil backflow.

[0016] This multi-functional integrated structure for oil testing directly connects the density detection module and the cloud point detection module through a connecting structure, allowing the oil that has completed density testing to flow directly into the cloud point detection module without the need for separate and repeated sampling for testing. This not only simplifies the testing process but also reduces the waste of oil samples.

[0017] This multi-functional integrated structure for oil testing can filter impurities in the oil through the setting of the filter screen, preventing impurities from entering the cloud point detection module and interfering with the detection process, thus ensuring the accuracy of the detection results.

[0018] This multi-functional integrated structure for oil detection uses an elastic structure to buffer the filtered oil, ensuring the stability of the oil entering the cloud point detection module and further ensuring the reliability and accuracy of the cloud point detection results.

[0019] This multi-functional integrated structure for oil testing enhances the movement of piston one through the design of a power-assisted structure, ensuring that piston one can smoothly drive the rack for subsequent operations, thereby guaranteeing the normal operation of the entire testing process and improving the reliability and stability of equipment operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a multifunctional integrated structure for oil detection in Example 1;

[0021] Figure 2 This is a schematic diagram of the housing in the open state of a multifunctional integrated structure for oil detection in Example 1;

[0022] Figure 3 This is a schematic diagram of the connecting structure in Example 1;

[0023] Figure 4 This is a cross-sectional view of the transmission structure in Example 1;

[0024] Figure 5 This is a cross-sectional view of the inflation assembly in Example 1;

[0025] Figure 6 This is a schematic diagram of the power-assisted structure in Example 2.

[0026] In the picture:

[0027] 1. Box body; 11. First cavity; 12. Second cavity;

[0028] 2. Density detection module; 21. Oil outlet pipe;

[0029] 3. Cloud point detection module; 31. Oil inlet pipe; 32. Solenoid valve;

[0030] 4. Connecting structure; 41. Horizontal tube; 42. Connecting tube; 43. Piston one;

[0031] 5. Filter screen;

[0032] 6. Elastic structure; 61. Airbag; 62. Inflatable assembly; 621. Cylinder; 622. Piston II; 623. Push rod; 624. Connecting plate; 625. Air pipe; 626. Screw; 63. Transmission structure; 631. Sleeve rod; 632. Movable rod; 633. Rack; 634. Gear; 635. Spring;

[0033] 8. Power-assisted structure; 81. First electromagnet; 82. Switch one; 83. Second electromagnet; 84. Switch two; 85. Switch three; 86. Switch four. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] In the first embodiment, this embodiment provides a multifunctional integrated structure for oil detection, such as... Figures 1-5 As shown, the multifunctional integrated structure includes a housing 1, a first cavity 11 and a second cavity 12 disposed within the housing 1, and a density detection module 2 and a cloud point detection module 3 disposed within the first cavity 11 and the second cavity 12, respectively. The multifunctional integrated structure also includes a connecting structure 4 that runs through the first cavity 11 and the second cavity 12 and is connected to the oil outlet pipe 21 of the density detection module 2 and the oil inlet pipe 31 of the cloud point detection module 3 to guide the oil in the density detection module 2 to the cloud point detection module 3, a filter screen 5 disposed within the connecting structure 4 for filtering the oil in the density detection module 2, and an elastic structure 6 disposed within the connecting structure 4 for buffering the filtered oil.

[0036] In use, after the density detection module 2 completes the oil density detection, the oil is discharged through the oil outlet pipe 21. At this time, the oil will enter the connecting structure 4 and be filtered by the filter screen 5 set in the connecting structure 4. Due to the obstruction of the filter screen 5, impurities in the oil are intercepted, thereby ensuring the purity of the oil entering the cloud point detection module 3 and preventing impurities from interfering with the cloud point detection process. The filtered oil will continue to flow in the oil inlet pipe 31 side of the connecting structure 4. During this process, the oil will pass through the elastic structure 6, and the flow rate of the oil will be buffered by the elastic structure 6 to reduce the impact of the oil entering the oil inlet pipe 31 from the connecting structure 4, so that the oil enters the cloud point detection module 3 more smoothly for cloud point detection.

[0037] It should be noted that this multifunctional integrated structure also includes a control motherboard. Density detection module 2 and cloud point detection module 3 are electrically connected to the control motherboard. Both density detection module 2 and cloud point detection module 3 are existing technologies. Density detection module 2 can employ an oscillating tube densitometer, which measures density by utilizing the characteristic that the oscillation frequency of an oscillating tube filled with oil changes depending on the oil's density. A high-precision sensor measures the oscillation frequency of the oscillating tube, and the data processing system converts the frequency into the corresponding density value. Cloud point detection module 3 can employ an automatic cloud point meter electrically connected to the control motherboard. It primarily works by cooling the sample and simultaneously using an optical sensor to monitor changes in the sample's transmittance. When the sample becomes cloudy, the transmittance changes significantly, and the instrument automatically records the temperature at this point, which is the cloud point.

[0038] Specifically, the connecting structure 4 includes a horizontal pipe 41 disposed in the first cavity 11 and fixedly connected to the oil outlet pipe 21, a connecting pipe 42 passing through the first cavity 11 and the second cavity 12 and fixedly connected at both ends to one side of the horizontal pipe 41 and the top end of the oil inlet pipe 31, and a piston 43 slidably connected in the horizontal pipe 41 for communicating with the horizontal pipe 41 and the connecting pipe 42 by impacting and moving with the oil. The filter screen 5 is fixedly disposed inside the connecting pipe 42 near the end of the horizontal pipe 41.

[0039] After the density detection module 2 completes the density detection of the oil, the oil will be discharged from the oil outlet pipe 21. Since the horizontal pipe 41 is fixedly connected to the oil outlet pipe 21, the oil will flow into the horizontal pipe 41. At this time, the oil has a certain pressure and flow rate, forming an impact force. Inside the horizontal pipe 41, the piston 43, which was originally in the position blocking the connection between the horizontal pipe 41 and the connecting pipe 42, will begin to slide under the impact force when impacted by the oil. As the piston 43 moves, the horizontal pipe 41 and the connecting pipe 42 will gradually connect, and the oil will flow from the horizontal pipe 41 into the connecting pipe 42. After that, the oil entering the connecting pipe 42 will be filtered by the filter screen 5 to reduce the impact of impurities on the subsequent cloud point detection module 3 and ensure the accuracy of the detection results. The oil filtered by the filter screen 5 will be buffered by the elastic structure 6 and then flow into the oil inlet pipe 31 through the connecting pipe 42. Finally, it will continue to flow into the cloud point detection module 3 through the oil inlet pipe 31 to provide a sample for cloud point detection.

[0040] Furthermore, the elastic structure 6 includes an airbag 61 fixedly disposed inside the end of the connecting pipe 42 near the oil inlet pipe 31, an inflation assembly 62 disposed in the first cavity 11 corresponding to the side of the connecting pipe 42 for inflating or contracting the airbag 61, and a transmission structure 63 disposed on the horizontal pipe 41 and connected to the piston 43 and the inflation assembly 62 for transmitting power from the piston 43 to the inflation assembly 62; the transmission structure 63 includes a sleeve rod 631 fixedly disposed inside the side of the horizontal pipe 41 away from the connecting pipe 42, a movable rod 632 slidably connected inside the sleeve rod 631 and fixedly connected to the side of the piston 43 away from the oil outlet pipe 21, a rack 633 slidably connected inside the horizontal pipe 41 and fixedly connected to one side of the movable rod 632, and a rack 633 rotatably connected inside the horizontal pipe 41 and fixedly connected to the rack 632. 33 meshing gear 634, gear 634 is connected to inflation assembly 62; inflation assembly 62 includes cylinder 621 fixedly disposed in the first cavity 11 corresponding to one side of connecting pipe 42, piston 622 moving longitudinally in cylinder 621, push rod 623 passing through the top of cylinder 621 and fixedly connected to piston 622, connecting plate 624 fixedly connected to the end of push rod 623 away from piston 622, air pipe 625 disposed at the bottom of cylinder 621 and connected at both ends to the inside of cylinder 621 and airbag 61 respectively, and screw 626 passing through horizontal pipe 41 and fixedly connected to gear 634. Push rod 623 is slidably connected to cylinder 621, connecting plate 624 is screwed to screw 626, and screw 626 is rotatably connected to horizontal pipe 41.

[0041] In order to achieve the reset of piston 43, a spring 635 is sleeved on the movable rod 632. The two ends of the spring 635 are fixedly connected to the inside of the sleeve rod 631 and the movable rod 632, respectively. After the oil is completely discharged from the horizontal pipe 41 to the connecting pipe 42, the elastic force of the spring 635 can assist the piston 43 to reset and move, block the connection between the horizontal pipe 41 and the connecting pipe 42, prevent the oil from flowing back, and prepare for the next test cycle.

[0042] When the oil discharged from density detection module 2 pushes piston 43 in horizontal tube 41 to move, the movable rod 632, which is fixedly connected to the side of piston 43 away from oil outlet pipe 21, will move synchronously with piston 43. During this process, spring 635 will be compressed. Since the movable rod 632 is slidably connected in sleeve 631, the movement of the movable rod 632 will drive the rack 633 fixedly connected to it to slide in horizontal tube 41. Since the rack 633 meshes with gear 634, the linear motion of the rack 633 will rotate. The rotation of gear 634 enables the transmission of power from piston 43 to gear 634. Gear 634 is fixedly connected to screw 626, which is screwed to connecting plate 624. Connecting plate 624 is connected to push rod 623, which passes through the top of cylinder 621 and is fixedly connected to piston 622. Therefore, when gear 634 rotates, it drives screw 626 to rotate. When screw 626 rotates, connecting plate 624 moves along the axial direction of screw 626, thereby driving push rod 623 and piston. Piston 622 moves longitudinally within cylinder 621. When piston 622 moves downward within cylinder 621, the space inside cylinder 621 is compressed. Gas enters air bladder 61 through air pipe 625, causing air bladder 61 to inflate. Through the elasticity of air bladder 61, the oil filtered by connecting pipe 42 passes through air bladder 61, which acts as a buffer to reduce the flow rate and impact force of the oil, allowing the oil to enter the oil inlet pipe 31 of cloud point detection module 3 more smoothly. When the oil in horizontal pipe 41 is completely discharged, piston 622... 43 is no longer subjected to the impact of the oil. At this time, the compressed spring 635 recovers its elasticity and pushes the movable rod 632 and piston 43 to move in the opposite direction to reset. During the reset process, the gear 634 rotates in the opposite direction, and the screw 626 also rotates in the opposite direction, causing the connecting plate 624, push rod 623 and piston 622 to move upward. The internal pressure of the cylinder 621 decreases. At this time, the gas in the airbag 61 flows back to the cylinder 621 through the air pipe 625, and the airbag 61 contracts to prepare for the next oil buffering.

[0043] The second embodiment differs from the first embodiment in that, as follows: Figure 6 As shown, in order to ensure the power for the movement of piston 43 and rack 633, the multi-functional integrated structure also includes a power auxiliary structure 8 disposed on the horizontal tube 41, piston 43 and rack 633 to provide auxiliary power for the movement of piston 43 and rack 633; ​​the design of power auxiliary structure 8 can enhance the power for the movement of piston 43, ensuring that piston 43 can smoothly drive rack 633 to perform subsequent operations.

[0044] Furthermore, the power assist structure 8 includes first electromagnets 81 respectively fixedly mounted on the rack 633 and inside the horizontal tube 41 corresponding to one end of the sleeve 631 and magnetically attracted to each other; second electromagnets 83 respectively fixedly mounted inside the horizontal tube 41 near one end of the oil outlet pipe 21 and inside the piston 43 near the oil outlet pipe 21 and magnetically attracted to each other; a switch 82 fixedly mounted inside the horizontal tube 41 corresponding to one side of the first electromagnet 81 for contacting the rack 633 to de-energize the two first electromagnets 81 and energize the two second electromagnets 83; and a switch 82 fixedly mounted inside the horizontal tube 41 corresponding to one side of the second electromagnet 83 for contacting the piston 43 near the oil outlet pipe 21 to de-energize the two second electromagnets 83 and... Two first electromagnets 81 are energized by switch 2 84; when piston 1 43 moves close to sleeve rod 631, the magnetic attraction of the two first electromagnets 81 ensures that piston 1 43 can smoothly drive rack 633 to move, realize the rotation of gear 634, and thus realize the inflation of airbag 61; a solenoid valve 32 is fixedly installed at one end of oil inlet pipe 31 near connecting pipe 42, a switch 3 85 is fixedly installed in the horizontal pipe 41 on the side corresponding to switch 1 82, which is used to contact rack 633 to open solenoid valve 32, and a switch 4 86 is fixedly installed in the horizontal pipe 41 on the side corresponding to switch 2 84, which is used to contact piston 1 43 near oil outlet pipe 21 to close solenoid valve 32.

[0045] When the oil discharged from density detection module 2 pushes piston 43 towards sleeve rod 631, and piston 43 drives rack 633 to gradually approach sleeve rod 631, the first electromagnet 81 fixed on rack 633 and inside horizontal tube 41 corresponding to one end of sleeve rod 631 is energized to generate magnetic attraction. This magnetic attraction enhances the power of piston 43 to drive rack 633 to move, ensuring that even if the oil impact force is insufficient, rack 633 can be smoothly driven to move. Thus, the movement of rack 633 can drive the meshing gear 634 to rotate, and the rotation of gear 634 drives inflation assembly 62 to work, realizing inflation of airbag 61. When rack 633 moves to contact switch 85, switch 85 is triggered, causing solenoid valve 32 at the end of oil inlet pipe 31 near connecting pipe 42 to open. At this time, the buffered oil can smoothly enter cloud point detection module 3 through oil inlet pipe 31 for cloud point detection. At the same time, switch 85... When switch 82 is triggered, the two first electromagnets 81 are de-energized, and the two second electromagnets 83 are energized, preparing for subsequent reset and reverse movement. When the oil is discharged, the spring force of spring 635 causes piston 43 to reset and move in the direction of oil outlet pipe 21. During this process, the energized second electromagnets 83 generate a magnetic attraction, assisting the spring force of spring 635, ensuring that piston 43 can smoothly drive rack 633 to move in the reverse direction. Similarly, the reverse movement of rack 633 will drive gear 634 to rotate in the reverse direction, thereby causing inflation component 62 to work in the reverse direction, realizing the deflation of airbag 61, preparing for the next buffering. When piston 43 approaches oil outlet pipe 21 and contacts switch 86, switch 86 is triggered, causing solenoid valve 32 to close, preventing oil backflow. At the same time, switch 84 is triggered, de-energizing the two second electromagnets 83 and energizing the two first electromagnets 81, preparing for the next oil to push piston 43 to move.

[0046] It should be added that switches 82, 84, 85, and 86 are all electrically connected to the control motherboard of this multi-functional integrated structure, and the surfaces of switches 82, 84, 85, and 86, as well as the second electromagnet 83 and the first electromagnet 81, are all treated with an anti-oil coating to ensure that they do not affect their use.

[0047] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A multi-functional integrated structure for oil detection, comprising a housing (1), a first cavity (11) and a second cavity (12) disposed within the housing (1), and a density detection module (2) and a cloud point detection module (3) disposed within the first cavity (11) and the second cavity (12), respectively. Its features are: The multifunctional integrated structure also includes a connecting structure (4) that runs through the first cavity (11) and the second cavity (12) and is connected to the oil outlet pipe (21) of the density detection module (2) and the oil inlet pipe (31) of the cloud point detection module (3) to guide the oil in the density detection module (2) into the cloud point detection module (3), a filter screen (5) set in the connecting structure (4) for filtering the oil in the density detection module (2), and an elastic structure (6) set in the connecting structure (4) for buffering the filtered oil.

2. The multifunctional integrated structure for oil detection according to claim 1, characterized in that: The connecting structure (4) includes a horizontal pipe (41) disposed in the first cavity (11) and fixedly connected to the oil outlet pipe (21), a connecting pipe (42) passing through the first cavity (11) and the second cavity (12) and fixedly connected at both ends to one side of the horizontal pipe (41) and the top end of the oil inlet pipe (31) respectively, and a piston (43) slidably connected in the horizontal pipe (41) for communicating between the horizontal pipe (41) and the connecting pipe (42) as the oil impacts and moves. The filter screen (5) is fixedly disposed inside the connecting pipe (42) near one end of the horizontal pipe (41).

3. The multifunctional integrated structure for oil detection according to claim 2, characterized in that: The elastic structure (6) includes an airbag (61) fixedly disposed inside the end of the connecting pipe (42) near the oil inlet pipe (31), an inflation assembly (62) disposed in the first cavity (11) on the side corresponding to the connecting pipe (42) for inflating or contracting the airbag (61), and a transmission structure (63) disposed on the horizontal pipe (41) and connected to the piston (43) and the inflation assembly (62) for transmitting the power of the piston (43) to the inflation assembly (62).

4. The multifunctional integrated structure for oil detection according to claim 3, characterized in that: The transmission structure (63) includes a sleeve (631) fixedly disposed inside the side of the horizontal tube (41) away from the connecting tube (42), a movable rod (632) slidably connected inside the sleeve (631) and fixedly connected to the piston (43) away from the oil outlet pipe (21), a rack (633) slidably connected inside the horizontal tube (41) and fixedly connected to the movable rod (632), and a gear (634) rotatably connected inside the horizontal tube (41) and meshing with the rack (633). The gear (634) is connected to the inflation assembly (62).

5. The multifunctional integrated structure for oil detection according to claim 4, characterized in that: A spring (635) is sleeved on the movable rod (632), and the two ends of the spring (635) are fixedly connected to the inside of the sleeve rod (631) and the movable rod (632), respectively.

6. The multifunctional integrated structure for oil detection according to claim 4, characterized in that: The inflation assembly (62) includes a cylinder (621) fixedly disposed in the first cavity (11) on one side corresponding to the connecting pipe (42), a piston (622) that moves longitudinally in the cylinder (621), a push rod (623) that passes through the top of the cylinder (621) and is fixedly connected to the piston (622), a connecting plate (624) fixedly connected to the end of the push rod (623) away from the piston (622), an air pipe (625) disposed at the bottom of the cylinder (621) and having both ends connected to the inside of the cylinder (621) and the airbag (61) respectively, and a screw (626) that passes through the horizontal pipe (41) and is fixedly connected to the gear (634). The push rod (623) is slidably connected to the cylinder (621), the connecting plate (624) is screwed to the screw (626), and the screw (626) is rotatably connected to the horizontal pipe (41).

7. The multifunctional integrated structure for oil detection according to claim 4, characterized in that: The multifunctional integrated structure also includes a power auxiliary structure (8) disposed on the horizontal tube (41), piston (43) and rack (633) to provide auxiliary power for the movement of piston (43) and rack (633).

8. The multifunctional integrated structure for oil detection according to claim 7, characterized in that: The power-assisted structure (8) includes a first electromagnet (81) fixedly mounted on the rack (633) and inside the horizontal tube (41) corresponding to one end of the sleeve (631) and magnetically attracted to each other; a second electromagnet (83) fixedly mounted inside the horizontal tube (41) near one end of the oil outlet pipe (21) and inside the piston (43) near one side of the oil outlet pipe (21) and magnetically attracted to each other; a switch (82) fixedly mounted inside the horizontal tube (41) corresponding to one side of the first electromagnet (81) for contacting the rack (633) to de-energize the two first electromagnets (81) and energize the two second electromagnets (83); and a switch (84) fixedly mounted inside the horizontal tube (41) corresponding to one side of the second electromagnet (83) for contacting the piston (43) near one end of the oil outlet pipe (21) to de-energize the two second electromagnets (83) and energize the two first electromagnets (81).

9. The multifunctional integrated structure for oil detection according to claim 8, characterized in that: A solenoid valve (32) is fixedly installed at one end of the oil inlet pipe (31) near the connecting pipe (42). A switch three (85) is fixedly installed in the horizontal pipe (41) on the side corresponding to the first switch (82) for contacting the rack (633) to open the solenoid valve (32). A switch four (86) is fixedly installed in the horizontal pipe (41) on the side corresponding to the second switch (84) for contacting the piston one (43) near the oil outlet pipe (21) to close the solenoid valve (32).

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