A device and method for detecting the epoxy resin content in insulating oil

Abstract

The application discloses a device for detecting epoxy resin in insulating oil, which comprises a device platform, a detection box, a light shield, support columns, a shaking structure, a closing structure and a reciprocating structure. Four groups of support columns are arranged on the lower surface of the device platform, and the upper end of each group of support columns is fixedly connected to the lower surface of the device platform. The upper surface of the device platform is provided with the detection box. The application also discloses a corresponding method. When the crankshaft rotates, the fixed ring rotates in the middle of the crankshaft, the crankshaft pushes the guide rod, the guide rod pushes the chassis, the sliding strip on the lower surface of the chassis and the guide rail are used in cooperation, the chassis drives the liquid storage tank to reciprocate, the insulating oil and the epoxy resin are uniformly mixed, the epoxy resin is effectively prevented from being deposited in the insulating oil, the mixing of the epoxy resin and the insulating oil is not uniform, a large error occurs in the detection of the infrared spectrometer, and the detection efficiency and accuracy are improved.

Description

Technical Field

[0001] This invention relates to the technical field of component detection in insulating oil, and more particularly to an apparatus and method for detecting the epoxy resin content in insulating oil. Background Technology

[0002] The insulating oil used in transformers primarily functions to dissipate heat and cool the windings, maintaining insulation and preventing corona and arcing. Insulating oil is typically a synthetic liquid insulating material, often simply called synthetic oil. Because mineral insulating oil is a mixture of various hydrocarbons, it's difficult to completely remove components that reduce insulation performance. Furthermore, its manufacturing process is complex, it's flammable, has low heat resistance, and a low dielectric constant. Therefore, various high-performance synthetic oils have been researched and developed. Existing insulating oils often contain epoxy resin to increase their temperature resistance. To adapt the insulating oil to different applications, varying amounts of epoxy resin are required, necessitating testing of the epoxy resin content during synthesis. Currently, infrared spectroscopy is commonly used to detect epoxy resin content. However, testing in a lit environment leads to significant errors. Additionally, epoxy resin precipitation within the insulating oil causes uneven mixing, resulting in substantial errors and inaccurate detection results when using infrared spectroscopy. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an apparatus and method for detecting the epoxy resin content in insulating oil, which can quickly and accurately detect the epoxy resin content in insulating oil.

[0004] To address the aforementioned technical problems, as one aspect of the present invention, an apparatus for detecting epoxy resin in insulating oil is provided, comprising at least an equipment platform, a detection chamber, a light shield, a support column, a shaking structure, a closing structure, and a reciprocating structure, wherein:

[0005] The lower surface of the equipment platform is provided with four sets of support columns. The upper end of each set of support columns is fixedly connected to the lower surface of the equipment platform. A detection box is provided on the upper surface of the equipment platform. The detection box is provided with a shaking structure. A set of mounting plates is provided on both sides of the inner wall of the detection box. A sliding groove is opened on one side of the mounting plate. A closed structure is provided inside the sliding groove. A light shield is provided at one end of the detection box. A fixing plate is provided at the top inside the light shield. A sliding groove is opened on the lower surface of the fixing plate. A reciprocating structure is provided inside the sliding groove.

[0006] Preferably, the shaking structure further includes guide rails, a chassis, and a crankshaft; wherein, two sets of guide rails are provided, the lower surfaces of the two sets of guide rails are fixedly connected to the bottom of the detection box, and a set of fixing blocks are respectively provided on the upper surfaces of the two sets of guide rails, one of the fixing blocks having a through hole on its side surface, and the chassis and crankshaft are provided on the upper surfaces of the two sets of guide rails.

[0007] Preferably, the lower surface of the chassis is provided with two sets of sliding bars, each set of sliding bars is disposed inside a set of guide rails, the upper surface of each set of sliding bars is fixedly connected to the lower surface of the chassis, the upper surface of the chassis is provided with a liquid storage tank, one end of the chassis is provided with a universal joint, a guide rod is provided on the side of the universal joint away from the chassis, and a fixing ring is provided on the end of the guide rod away from the universal joint.

[0008] Preferably, one end of the crankshaft is rotatably connected to the side surface of a set of fixed blocks, a fixing ring is sleeved in the middle of the crankshaft, the other end of the crankshaft extends through the through hole opened on the side surface of the fixed block to one side of the fixed block, and a first servo motor is provided at the other end of the crankshaft. The lower surface of the first servo motor is fixedly connected to the upper surface of a set of guide rails, and the power output end of the first servo motor is fixedly connected to one end of the crankshaft.

[0009] Preferably, the closed structure includes a second servo motor and a first threaded rod. The bottom of the second servo motor is fixedly connected to the bottom of a slide groove on one side of a set of mounting plates. The power output end of the second servo motor is provided with a first threaded rod. One end of the first threaded rod is fixedly connected to the power output end of the second motor, and the other end of the first threaded rod is rotatably connected to the inner wall of the slide groove on one side of a set of mounting plates.

[0010] Preferably, one end of the light shield is provided with two sets of connecting ear plates, which are respectively disposed inside the sliding groove on one side of a set of mounting plates. A threaded hole is opened on the side surface of one set of connecting ear plates, and a first threaded rod is disposed inside the threaded hole. A through hole is opened on the side surface of the other set of connecting ear plates, and a sliding rod is disposed inside the through hole. The two ends of the sliding rod are respectively fixedly connected to the inner wall of the sliding groove on one side of a set of mounting plates.

[0011] Preferably, a set of sliding grooves are respectively provided on both sides of the inner wall of the sliding groove on the lower surface of the fixed plate, and a partition is provided inside the sliding groove on the lower surface of the fixed plate, with through holes provided on the side surface of the partition.

[0012] Preferably, the reciprocating structure includes a third servo motor, a second threaded rod, and a movable block. The movable block is disposed inside a groove on the lower surface of the fixed plate. A threaded hole is opened on the side surface of the movable block, and a second threaded rod is disposed inside the threaded hole. One end of the second threaded rod is rotatably connected to the inner wall of the groove on the lower surface of the fixed plate, and the other end of the second threaded rod extends through a through hole on the side surface of the partition to one side of the partition. A third servo motor is disposed at the end of the second threaded rod extending to one side of the partition, and the power output end of the third servo motor is fixedly connected to one end of the second threaded rod.

[0013] Preferably, a set of sliding plates is provided on both sides of the movable block, and each set of sliding plates is respectively provided inside the sliding groove on both sides of the sliding groove on the lower surface of the fixed plate. A connecting block is provided on the lower surface of the movable block, and the upper surface of the connecting block is fixedly connected to the lower surface of the movable block. An infrared spectrometer is provided on the lower surface of the connecting block.

[0014] Accordingly, as another aspect of the present invention, a method for detecting the epoxy resin content in insulating oil is also provided, which is implemented using the apparatus as described in any one of claims, characterized in that the method includes the following detection steps:

[0015] Step S1: Unfold the light shield through the closed structure and place the test sample inside the liquid storage tank inside the test chamber.

[0016] Step S2: Close the light shield using the closing structure;

[0017] Step S3: Shake the sample inside the detection chamber evenly using the shaking mechanism;

[0018] Step S4: The reciprocating structure enables the infrared spectrometer to repeatedly detect the sample inside the liquid storage tank inside the detection chamber, thereby obtaining the epoxy resin content in the sample.

[0019] Implementing the embodiments of the present invention has the following beneficial effects:

[0020] This invention provides an apparatus and method for detecting the epoxy resin content in insulating oil. By incorporating a closed structure, an insulating oil sample is placed inside a storage tank. When a second servo motor is activated, its power output rotates, simultaneously driving a first threaded rod to rotate. This first threaded rod, while rotating, engages with a set of threaded holes on the side surface of a connecting lug. With the assistance of a sliding rod, a light shield opens and closes, effectively blocking external light and preventing it from affecting the detection results.

[0021] In an embodiment of the present invention, a shaking structure is provided. When the first servo motor is started, the power output end of the first servo motor rotates, driving the crankshaft to rotate. When the crankshaft rotates, the fixed ring rotates in the middle of the crankshaft, causing the crankshaft to push the guide rod, which in turn pushes the chassis. With the cooperation of the sliding strip and the guide rail on the lower surface of the chassis, the chassis drives the liquid storage tank to move back and forth, so that the insulating oil and epoxy resin are mixed evenly. This effectively avoids the uneven mixing of epoxy resin and insulating oil caused by epoxy resin precipitation inside the insulating oil, which would lead to large errors in the infrared spectrometer detection.

[0022] In an embodiment of the present invention, a reciprocating structure is provided. When the third servo motor is started, the rotation of the third servo motor drives the second threaded rod to rotate. The rotation of the second threaded rod is threadedly connected to the threaded hole on one side of the movable block. While the threaded rod rotates, the movable block moves with the cooperation of the sliding plate. The upper surface of the connecting block is fixedly connected to the lower surface of the movable block. An infrared spectrometer is provided on the lower surface of the connecting block. When the movable block moves, it drives the connecting block to move. When the connecting block moves, it drives the infrared spectrometer to move, which increases the detection area of ​​the infrared spectrometer and effectively improves the detection accuracy. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of the present invention.

[0024] Figure 1 This is a schematic diagram of one embodiment of a device for detecting the epoxy resin content in insulating oil provided by the present invention;

[0025] Figure 2 This is a schematic diagram of the cooperation structure between the shaking structure and the liquid storage tank in this invention;

[0026] Figure 3 This is a schematic diagram of the mating structure of the mounting plate, the closed structure, and the light shield in this invention;

[0027] Figure 4 This is a partial structural diagram of the interior of the light shield in this invention;

[0028] Figure 5 This is an exploded structural diagram of the reciprocating structure in this invention;

[0029] Figure 6 This is a schematic diagram of the main flow of an embodiment of a method for detecting the epoxy resin content in insulating oil provided by the present invention.

[0030] In the diagram: 1. Equipment platform; 2. Detection box; 3. Light shield; 4. Support column; 5. Shaking structure; 6. Closed structure; 7. Reciprocating structure; 8. Chassis; 9. Guide rail; 10. Sliding bar; 11. Liquid storage tank; 12. Universal joint; 13. Guide rod; 14. Fixing ring; 15. Crankshaft; 16. Fixing block; 17. First servo motor; 18. Second servo motor; 19. Mounting plate; 20. Sliding rod; 21. First threaded rod; 22. Connecting ear plate; 23. Fixing plate; 24. Infrared spectrometer; 25. Third servo motor; 26. Movable block; 27. Sliding plate; 28. Partition plate; 29. ​​Second threaded rod; 30. Connecting block. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] like Figure 1 The diagram shows a schematic representation of an embodiment of a device for detecting the epoxy resin content in insulating oil provided by the present invention; in conjunction with... Figures 2 to 5 As shown, in this embodiment, the device includes an equipment platform 1, a detection box 2, a light shield 3, support columns 4, a shaking structure 5, a closing structure 6, and a reciprocating structure 7. Four sets of support columns 4 are provided on the lower surface of the equipment platform 1, providing stable support. The upper end of each set of support columns 4 is fixedly connected to the lower surface of the equipment platform 1. A detection box 2 is provided on the upper surface of the equipment platform 1, facilitating the placement of insulating oil samples. A shaking structure 5 is provided inside the detection box 2, facilitating the shaking of the test samples. A set of mounting plates 19 are provided on both sides of the inner wall of the detection box 2. A sliding groove is opened on one side of the mounting plate 19, and a closing structure 6 is provided inside the sliding groove, facilitating the installation of the closing structure 6. A light shield 3 is provided at one end of the detection box 2, facilitating the blocking of light. The closing structure 6 facilitates the opening and closing of the light shield 3. A fixing plate 23 is provided at the top inside the light shield 3, and a sliding groove is opened on the lower surface of the fixing plate 23, facilitating the installation of the reciprocating structure 7.

[0033] More specifically, the shaking structure 5 includes a guide rail 9, a chassis 8, and a crankshaft 15. Two sets of guide rails 9 are provided. The lower surfaces of the two sets of guide rails 9 are fixedly connected to the bottom of the detection box 2. A set of fixing blocks 16 are provided on the upper surfaces of the two sets of guide rails 9 respectively. The fixing blocks 16 facilitate the installation of the structure. One set of fixing blocks 16 has through holes on its side surface. The chassis 8 and the crankshaft 15 are provided on the upper surfaces of the two sets of guide rails 9.

[0034] More specifically, the lower surface of the chassis 8 is provided with two sets of sliding bars 10, each set of sliding bars 10 is set inside a set of guide rails 9, and the sliding bars 10 can slide inside the guide rails 9. The upper surface of each set of sliding bars 10 is fixedly connected to the lower surface of the chassis 8. When the sliding bars 10 slide, they can drive the chassis 8 to slide. The upper surface of the chassis 8 is provided with a liquid storage tank 11, which is convenient for storing samples. One end of the chassis 8 is provided with a universal joint 12, and the side of the universal joint 12 away from the chassis 8 is provided with a guide rod 13. The universal joint 12 allows one end of the guide rod 13 to be rotatably connected to one side of the chassis 8. The end of the guide rod 13 away from the universal joint 12 is provided with a fixing ring 14.

[0035] More specifically, one end of the crankshaft 15 is rotatably connected to the side surface of a set of fixed blocks 16, and a fixing ring 14 is sleeved on the middle of the crankshaft 15, allowing the fixing ring 14 to rotate in the middle of the crankshaft 15. The other end of the crankshaft 15 extends through a through hole opened on the side surface of the fixed blocks 16 to one side of the fixed blocks 16, allowing one end of the crankshaft 15 to rotate inside the through hole on the side surface of the fixed blocks 16. A first servo motor 17 is provided at the other end of the crankshaft 15, and the lower surface of the first servo motor 17 is fixedly connected to the upper surface of a set of guide rails 9. On the other hand, the power output end of the first servo motor 17 is fixedly connected to one end of the crankshaft 15. The rotation of the power output end of the first servo motor 17 drives the crankshaft 15 to rotate. When the crankshaft 15 rotates, it rotates in the middle of the crankshaft 15 through the fixed ring 14, causing the crankshaft 15 to push the guide rod 13, which in turn pushes the chassis 8. With the cooperation of the sliding strip 10 and the guide rail 9 on the lower surface of the chassis 8, the chassis 8 drives the liquid storage tank 11 to move back and forth, so that the insulating oil and epoxy resin are evenly mixed.

[0036] More specifically, the closed structure 6 includes a second servo motor 18 and a first threaded rod 21. The bottom of the second servo motor 18 is fixedly connected to the bottom of a groove on one side of a set of mounting plates 19. The power output end of the second servo motor 18 is provided with the first threaded rod 21. One end of the first threaded rod 21 is fixedly connected to the power output end of the second motor, and the other end of the first threaded rod 21 is rotatably connected to the inner wall of the groove on one side of the set of mounting plates 19. When the power output end of the second servo motor 18 rotates, it drives the first threaded rod 21 to rotate.

[0037] More specifically, the light shield 3 is provided with two sets of connecting ear plates 22 at one end. The two sets of connecting ear plates 22 are respectively set inside the sliding groove on one side of a set of mounting plates 19. A threaded hole is opened on the side surface of one set of connecting ear plates 22, and a first threaded rod 21 is set inside the threaded hole. A through hole is opened on the side surface of the other set of connecting ear plates 22, and a sliding rod 20 is set inside the through hole. The two ends of the sliding rod 20 are respectively fixedly connected to the inner wall of the sliding groove on one side of a set of mounting plates 19. When the first threaded rod 21 rotates, it is threadedly connected to the threaded hole on the side surface of the first set of connecting ear plates 22. With the cooperation of the sliding rod 20, the light shield 3 closes and unfolds.

[0038] More specifically, a set of sliding grooves are respectively opened on both sides of the inner wall of the sliding groove on the lower surface of the fixed plate 23, and a partition 28 is provided inside the sliding groove on the lower surface of the fixed plate 23. The side surface of the partition 28 is provided with through holes, and the partition 28 serves as an installation device.

[0039] More specifically, the reciprocating structure 7 includes a third servo motor 25, a second threaded rod 29, and a movable block 26. The movable block 26 is disposed inside a groove on the lower surface of the fixed plate 23. A threaded hole is opened on the side surface of the movable block 26, and the second threaded rod 29 is disposed inside the threaded hole. One end of the second threaded rod 29 is rotatably connected to the inner wall of the groove on the lower surface of the fixed plate 23, and the other end of the second threaded rod 29 extends through a through hole on the side surface of the partition plate 28 to one side of the partition plate 28. The third servo motor 25 is disposed at the end of the second threaded rod 29 extending to one side of the partition plate 28. The power output end of the third servo motor 25 is fixedly connected to one end of the second threaded rod 29. When the third servo motor 25 rotates, it drives the second threaded rod 29 to rotate. The rotation of the second threaded rod 29 is threadedly connected to the threaded hole on one side of the movable block 26.

[0040] More specifically, a set of sliding plates 27 are respectively provided on both sides of the movable block 26. Each set of sliding plates 27 is respectively provided inside the sliding groove on both sides of the inner wall of the sliding groove on the lower surface of the fixed plate 23. A connecting block 30 is provided on the lower surface of the movable block 26. When the threaded rod rotates, the movable block 26 moves with the cooperation of the sliding plates 27. The upper surface of the connecting block 30 is fixedly connected to the lower surface of the movable block 26. An infrared spectrometer 24 is provided on the lower surface of the connecting block 30.

[0041] Understandably, infrared spectroscopy can be used to study molecular structure and chemical bonds, such as determining force constants and molecular symmetry. Infrared spectroscopy can be used to determine bond lengths and bond angles, thereby inferring the molecular geometry. The strength of chemical bonds can be deduced from the obtained force constants, and thermodynamic functions can be calculated from normal frequencies. The wavenumbers of certain groups or chemical bonds in a molecule are basically fixed or only vary within a small wavelength range in different compounds. Therefore, many organic functional groups, such as methyl, methylene, carbonyl, cyano, hydroxyl, and amino groups, have characteristic absorptions in infrared spectra. Through infrared spectroscopy, it is possible to determine which organic functional groups are present in an unknown sample, laying the foundation for ultimately determining the chemical structure of the unknown substance. Due to intramolecular and intermolecular interactions, the characteristic frequencies of organic functional groups will undergo subtle changes depending on the chemical environment in which the functional group is located. This creates conditions for studying and characterizing intramolecular and intermolecular interactions. Many normal vibrations in the low wavenumber region of a molecule often involve all atoms in the molecule. Different molecules have different vibrational modes, which makes infrared spectra highly characteristic, like fingerprints, and is called the fingerprint region. Taking advantage of this characteristic, researchers have collected infrared spectra of tens of thousands of known compounds and stored them in computers, compiling them into a standard infrared spectrum library. By simply comparing the infrared spectrum of an unknown substance with the spectrum in the standard library, researchers can quickly determine the composition of the unknown compound and further detect the epoxy resin content.

[0042] like Figure 6 The diagram shows a main flow chart of an embodiment of a method for detecting epoxy resin content in insulating oil provided by the present invention. In this embodiment, the method employs the following... Figures 1 to 5 The detection device shown is used to implement this method. Specifically, the method includes the following steps:

[0043] Step S1: Unfold the light shield 3 through the closing structure 6 and place the test sample inside the liquid storage tank 11 inside the test box 2.

[0044] Specifically, the second servo motor 18 is started. While the power output end of the second servo motor 18 rotates, it drives the first threaded rod 21 to rotate. While the first threaded rod 21 rotates, it is threadedly connected to a set of threaded holes on the side surface of the connecting ear plate 22. With the cooperation of the sliding rod 20, the light shield 3 is unfolded and the test sample is placed inside the liquid storage tank 11 inside the test box 2.

[0045] Step S2: Close the light shield 3 through the closing structure 6;

[0046] Specifically, the second servo motor 18 is started. While the power output end of the second servo motor 18 rotates, it drives the first threaded rod 21 to rotate. While the first threaded rod 21 rotates, it is threadedly connected to a set of threaded holes on the side surface of the connecting ear plate 22. With the cooperation of the sliding rod 20, the light shield 3 is closed.

[0047] Step S3: Shake the sample inside the detection box 2 evenly using the shaking structure 5;

[0048] Specifically, the first servo motor 17 is started, and the power output end of the first servo motor 17 rotates, driving the crankshaft 15 to rotate. When the crankshaft 15 rotates, it rotates in the middle of the crankshaft 15 through the fixed ring 14, causing the crankshaft 15 to push the guide rod 13, which in turn causes the guide rod 13 to push the chassis 8. With the cooperation of the sliding strip 10 on the lower surface of the chassis 8 and the guide rail 9, the chassis 8 drives the liquid storage tank 11 to move back and forth, so that the insulating oil and epoxy resin are evenly mixed.

[0049] In step S4, the infrared spectrometer 24 is used to detect the sample inside the liquid storage tank 11 inside the detection box 2 by means of the reciprocating structure 7, so as to obtain the content of epoxy resin.

[0050] Specifically, the third servo motor 25 is started, and the rotation of the third servo motor 25 drives the second threaded rod 29 to rotate. The rotation of the second threaded rod 29 is threadedly connected to the threaded hole on one side of the movable block 26. At the same time as the threaded rod rotates, the movable block 26 moves with the cooperation of the sliding plate 27. The upper surface of the connecting block 30 is fixedly connected to the lower surface of the movable block 26. An infrared spectrometer 24 is provided on the lower surface of the connecting block 30. When the movable block 26 moves, it drives the connecting block 30 to move. When the connecting block 30 moves, it drives the infrared spectrometer 24 to move, thereby increasing the detection area of ​​the infrared spectrometer 24.

[0051] Implementing the embodiments of the present invention has the following beneficial effects:

[0052] This invention provides an apparatus and method for detecting the epoxy resin content in insulating oil. By incorporating a closed structure, an insulating oil sample is placed inside a storage tank. When a second servo motor is activated, its power output rotates, simultaneously driving a first threaded rod to rotate. This first threaded rod, while rotating, engages with a set of threaded holes on the side surface of a connecting lug. With the assistance of a sliding rod, a light shield opens and closes, effectively blocking external light and preventing it from affecting the detection results.

[0053] In an embodiment of the present invention, a shaking structure is provided. When the first servo motor is started, the power output end of the first servo motor rotates, driving the crankshaft to rotate. When the crankshaft rotates, the fixed ring rotates in the middle of the crankshaft, causing the crankshaft to push the guide rod, which in turn pushes the chassis. With the cooperation of the sliding strip and the guide rail on the lower surface of the chassis, the chassis drives the liquid storage tank to move back and forth, so that the insulating oil and epoxy resin are mixed evenly. This effectively avoids the uneven mixing of epoxy resin and insulating oil caused by epoxy resin precipitation inside the insulating oil, which would lead to large errors in the infrared spectrometer detection.

[0054] In an embodiment of the present invention, a reciprocating structure is provided. When the third servo motor is started, the rotation of the third servo motor drives the second threaded rod to rotate. The rotation of the second threaded rod is threadedly connected to the threaded hole on one side of the movable block. While the threaded rod rotates, the movable block moves with the cooperation of the sliding plate. The upper surface of the connecting block is fixedly connected to the lower surface of the movable block. An infrared spectrometer is provided on the lower surface of the connecting block. When the movable block moves, it drives the connecting block to move. When the connecting block moves, it drives the infrared spectrometer to move, which increases the detection area of ​​the infrared spectrometer and effectively improves the detection accuracy.

[0055] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. An apparatus for detecting epoxy resin in insulating oil, characterized in that, It includes at least an equipment platform (1), a testing box (2), a light shield (3), a support column (4), a shaking structure (5), a closing structure (6), and a reciprocating structure (7), wherein: The equipment platform (1) has four sets of support columns (4) on its lower surface. The upper end of each set of support columns (4) is fixedly connected to the lower surface of the equipment platform (1). The equipment platform (1) has a test box (2) on its upper surface. The test box (2) has a shaking structure (5) inside. The inner walls of the test box (2) have a set of mounting plates (19) on both sides. The mounting plate (19) has a groove on one side. The groove has a closed structure (6) inside. The test box (2) has a light shield (3) at one end. The light shield (3) has a fixing plate (23) at the top inside. The fixing plate (23) has a groove on its lower surface. The groove has a reciprocating structure (7) inside. The shaking structure (5) further includes a guide rail (9), a chassis (8), and a crankshaft (15); the guide rail (9) is provided in two sets, the lower surfaces of the two sets of guide rail (9) are fixedly connected to the bottom of the detection box (2), and a set of fixing blocks (16) are respectively provided on the upper surfaces of the two sets of guide rail (9). One set of fixing blocks (16) has through holes on its side surface, and the chassis (8) and crankshaft (15) are provided on the upper surfaces of the two sets of guide rail (9). One end of the crankshaft (15) is rotatably connected to the side surface of a set of fixed blocks (16), and a fixing ring (14) is sleeved on the middle part of the crankshaft (15). The other end of the crankshaft (15) extends through the through hole opened on the side surface of the fixed block (16) to one side of the fixed block (16). A first servo motor (17) is provided at the other end of the crankshaft (15). The lower surface of the first servo motor (17) is fixedly connected to the upper surface of a set of guide rails (9), and the power output end of the first servo motor (17) is fixedly connected to one end of the crankshaft (15). The reciprocating structure (7) includes a third servo motor (25), a second threaded rod (29), and a movable block (26). The movable block (26) is located inside the groove on the lower surface of the fixed plate (23). A threaded hole is provided on the side surface of the movable block (26). The second threaded rod (29) is provided inside the threaded hole. One end of the second threaded rod (29) is rotatably connected to the inner wall of the groove on the lower surface of the fixed plate (23). The other end of the second threaded rod (29) extends through the through hole on the side surface of the partition plate (28) to one side of the partition plate (28). The third servo motor (25) is provided at one end of the second threaded rod (29) extending to one side of the partition plate (28). The power output end of the third servo motor (25) is fixedly connected to one end of the second threaded rod (29). The chassis (8) has two sets of sliding bars (10) on its lower surface. Each set of sliding bars (10) is located inside a set of guide rails (9). The upper surface of each set of sliding bars (10) is fixedly connected to the lower surface of the chassis (8). The upper surface of the chassis (8) has a liquid storage tank (11). One end of the chassis (8) has a universal joint (12). The side of the universal joint (12) away from the chassis (8) has a guide rod (13). The end of the guide rod (13) away from the universal joint (12) has a fixing ring (14). Among them, a set of sliding grooves are respectively opened on both sides of the inner wall of the sliding groove on the lower surface of the fixed plate (23), and a partition (28) is provided inside the sliding groove on the lower surface of the fixed plate (23). A through hole is opened on the side surface of the partition (28). A set of sliding plates (27) are respectively provided on both sides of the movable block (26). Each set of sliding plates (27) is respectively provided in the sliding groove on both sides of the sliding groove on the lower surface of the fixed plate (23). A connecting block (30) is provided on the lower surface of the movable block (26). The upper surface of the connecting block (30) is fixedly connected to the lower surface of the movable block (26). An infrared spectrometer (24) is provided on the lower surface of the connecting block (30).

2. The apparatus according to claim 1, characterized in that, The closed structure (6) includes a second servo motor (18) and a first threaded rod (21). The bottom of the second servo motor (18) is fixedly connected to the bottom of the slide groove on one side of a set of mounting plates (19). The power output end of the second servo motor (18) is provided with a first threaded rod (21). One end of the first threaded rod (21) is fixedly connected to the power output end of the second motor, and the other end of the first threaded rod (21) is rotatably connected to the inner wall of the slide groove on one side of a set of mounting plates (19).

3. The apparatus according to claim 2, characterized in that, The light shield (3) has two sets of connecting ear plates (22) at one end. The two sets of connecting ear plates (22) are respectively set inside the slide groove on one side of a set of mounting plates (19). A threaded hole is opened on the side surface of one set of connecting ear plates (22), and a first threaded rod (21) is set inside the threaded hole. A through hole is opened on the side surface of the other set of connecting ear plates (22), and a sliding rod (20) is set inside the through hole. The two ends of the sliding rod (20) are respectively fixedly connected to the inner wall of the slide groove on one side of a set of mounting plates (19).

4. A method for detecting the epoxy resin content in insulating oil, wherein the method is implemented using the apparatus as described in any one of claims 1 to 3, characterized in that, The method includes the following detection steps: Step S1: Unfold the light shield (3) through the closed structure (6) and place the test sample inside the liquid storage tank (11) inside the test box (2); Step S2, close the light shield (3) through the closing structure (6); Step S3: Shake the sample inside the detection box (2) evenly using the shaking structure (5); In step S4, the infrared spectrometer (24) is used to detect the sample inside the liquid storage tank (11) inside the detection box (2) by means of the reciprocating structure (7) to obtain the content of epoxy resin.

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