Multifunctional electrode and oil oxidation test system for oil oxidation test

Abstract

The utility model provides a kind of multifunctional electrode and oil oxidation test system for oil oxidation test, multifunctional electrode includes main body frame, electrode plate, metal coil, wiring terminal and mounting component;Main body frame includes upper and lower end cap and multiple posts, and form internal cavity among the three;Wiring terminal includes two first wiring terminal, two second wiring terminal and multiple third wiring terminal;Two first wiring terminal is fixed with the two metal plate of electrode plate;Two second wiring terminal is connected with metal coil;Third wiring terminal connects electronic component;Mounting component is located in internal cavity.The multifunctional electrode in the utility model simulates the oil service condition of complex scene to a large extent, realizes the oxidation and decay test of oil under the coupling effect of multiple physical fields such as electricity, magnetism, heat, oxygen, metal, also realizes the synchronous monitoring of material compatibility, electronic component and oil compatibility, corrosion and electrical performance in oil oxidation process.

Description

Technical Field

[0001] This utility model belongs to the field of oil detection technology, and in particular relates to a multifunctional electrode and oil oxidation testing system for oil oxidation testing. Background Technology

[0002] As the core component of lubricating oils, lubricating base oils have expanded their applications from traditional industrial equipment (such as engines and gearboxes) to scenarios involving the coexistence of electric, magnetic, thermal, oxygen, and complex materials, such as drive motors for new energy vehicles, high-power charging piles, electrochemical energy storage systems, and immersion cooling systems for data centers. In these scenarios, the oil needs to operate for extended periods under the coupled conditions of electric fields, magnetic fields, high temperatures, oxidation, and complex materials. Its performance stability and material compatibility directly affect the reliability of the equipment.

[0003] Existing oil evaluation technologies (such as patents CN215812773U and CN114113551A) mainly target the influence of single factors such as heat, oxygen, moisture, and metal catalysis on the oxidative stability of oil. Test methods include standard experiments such as DKA oxidation (CEC L-48-A-00), but they cannot achieve oil performance testing and real-time monitoring under complex operating conditions involving electromagnetic fields, high temperatures, and oxidation. Electric and magnetic fields, as fundamental thermodynamic parameters, significantly alter the dielectric properties and polarization behavior of oil, thereby affecting its insulation and anti-aging capabilities. While patent CN102628819A discloses a test device for evaluating the oxidative stability of transformer oil under high-voltage AC or DC electric fields, it suffers from complex structure, low integration, limited electrical performance monitoring indicators, and an inability to simultaneously assess key parameters such as metal corrosion, thus limiting its application in related fields.

[0004] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a multifunctional electrode and oil oxidation testing system for oil oxidation testing, which solves the problem that the performance evaluation of oils in electromagnetic environments cannot fully consider the combined effects of multiple factors such as electricity, magnetism, metal corrosion and material compatibility.

[0006] To achieve the above and other related objectives, this utility model provides a multifunctional electrode for oil oxidation testing, characterized in that the multifunctional electrode comprises:

[0007] The main frame includes an upper end cover, a lower end cover, and multiple columns. The multiple columns are circumferentially distributed along the lower surface of the upper end cover and vertically fixed between the upper end cover and the lower end cover. An internal cavity is formed between the multiple columns and the upper end cover and the lower end cover.

[0008] The electrode plate comprises two symmetrically arranged metal plates, both of which are vertically arranged in the internal cavity;

[0009] A metal coil, wherein the metal coil is formed by winding metal wires around the outer surface of multiple columns;

[0010] The terminal block is located above the upper cover and includes two first terminals, two second terminals, and multiple third terminals. The two first terminals are fixedly connected to the upper ends of the two metal plates to apply an electric field. The two second terminals are respectively connected to the start and end ends of the metal coil to apply a magnetic field and perform oil-metal corrosion testing. The third terminals are connected to electronic components via wires, and the electronic components are located within the internal cavity to test the compatibility between the oil and the electronic components.

[0011] A mounting assembly is fixed below the upper end cover and located in the internal cavity, and is used to mount compatibility test materials.

[0012] Preferably, both the upper and lower end caps are in the shape of a disc or a hollow ring.

[0013] Preferably, the multiple columns are evenly distributed circumferentially along the lower surface of the upper cover, and at least three columns are provided.

[0014] Preferably, each of the columns has multiple grooves circumferentially formed on its surface, and the multiple grooves are arranged parallel to each other, the grooves being used to fix the metal wire.

[0015] Preferably, each of the metal plates includes an upper metal plate and a lower metal plate, the lateral spacing between the two upper metal plates is greater than the lateral spacing between the two lower metal plates, and the internal space between the two upper metal plates is used to accommodate the compatibility test material mounted on the mounting assembly.

[0016] Preferably, each of the lower metal plates has at least two threaded holes, and the insulating screw passes through the two corresponding threaded holes in sequence, and the lateral spacing between the two lower metal plates is adjusted by the insulating washer.

[0017] Preferably, each of the lower metal plates is provided with a flow hole, which is located between two adjacent threaded holes and is used for the flow of oil.

[0018] Preferably, the multifunctional electrode further includes a gripping mechanism, which is fixed to the top of the main frame, and the multifunctional electrode is placed into or removed from the oxidation container by the gripping mechanism.

[0019] Preferably, the gripping mechanism, the upper end cover, the lower end cover, and the column are all made of oil-resistant solid insulating material.

[0020] This utility model also provides an oil oxidation testing system, which includes the aforementioned multifunctional electrode for oil oxidation testing; and

[0021] A compatibility testing material, which is attached to the mounting assembly;

[0022] Electronic components, which are fixed in the internal cavity via a third terminal block;

[0023] An electromagnetic field loading unit includes an electric field loading power supply and a magnetic field loading power supply. The electric field loading power supply is connected to two first terminals via wires to achieve electric field loading during the oil testing process. The magnetic field loading power supply is connected to two second terminals via wires to excite a magnetic field through the metal coil to achieve magnetic field loading during the oil testing process.

[0024] The testing unit includes a resistance testing device, a withstand voltage testing device, an impedance testing device, and an electronic testing device. The resistance testing device is connected to two second terminals via wires to test the metal corrosion resistance of the oil. The withstand voltage testing device is connected to two first terminals via wires to test the breakdown voltage during oil testing. The impedance testing device is connected to two first terminals via wires to test the impedance value during oil testing. The electronic testing device is connected to a third terminal via wires to test the performance of electronic components under oil immersion conditions.

[0025] The control unit is electrically connected to the electric field loading power supply, the magnetic field loading power supply, the resistance testing equipment, the withstand voltage testing equipment, the impedance testing equipment, and the electronic testing equipment.

[0026] As described above, the multifunctional electrode and oil oxidation testing system of this invention have the following beneficial effects:

[0027] The multifunctional electrode of this invention includes a main frame consisting of an upper end cover, a lower end cover, and multiple columns. It also includes an electrode plate, a metal coil, terminals, and a mounting assembly. The electrode plate is connected to two first terminals to apply an electric field. The metal coil is connected to two second terminals to apply a magnetic field and perform oil-metal corrosion testing. A third terminal is connected to electronic components via wires to test the compatibility between the oil and the electronic components. Additionally, the mounting assembly is used to mount compatibility testing materials for material compatibility testing. This invention integrates a multifunctional electrode-based oil oxidation testing system for evaluating the comprehensive performance of oil under electromagnetic coupling conditions. It not only simulates complex oil service conditions to a large extent, achieving oxidation decay testing of oil under the coupling of multiple physical fields such as electricity, magnetism, heat, oxygen, and metal, but also enables simultaneous monitoring of material compatibility, electronic component-oil compatibility, corrosion, and electrical performance during oil oxidation. This is of great significance for promoting the development and application of oils operating under electromagnetic environments. Attached Figure Description

[0028] Figure 1 The diagram shown is a structural schematic of a multifunctional electrode used for oil oxidation testing in a specific embodiment of this utility model.

[0029] Figure 2 The diagram shown is an exploded view of the electrode plate in a specific embodiment of this utility model.

[0030] Figure 3 The diagram shown is a structural schematic of the oil oxidation testing system in a specific embodiment of this utility model.

[0031] Component designation explanation

[0032] 101 Top Cover

[0033] 102 Lower end cap

[0034] 103 Columns

[0035] 1031 Groove

[0036] 104 Internal cavity

[0037] 105 end plate

[0038] 200 arresting agencies

[0039] 300 metal sheet

[0040] 301 upper metal plate

[0041] 3011 Fixing Hole

[0042] 302 lower metal plate

[0043] 3021 Insulating Screws

[0044] 3022 Insulating Nut

[0045] 3023 Insulating Gasket

[0046] 3024 Flow Hole

[0047] 401 First Terminal

[0048] 402 Second Terminal

[0049] 403 Third Terminal

[0050] 4031 Electronic Components

[0051] 500 Mounting Components

[0052] 501 Compatibility Test Materials

[0053] 601 Electric Field Loading Power Supply

[0054] 602 Magnetic Field Loading Power Supply

[0055] 603 Resistance Testing Equipment

[0056] 604 withstand voltage testing equipment

[0057] 605 Impedance Testing Equipment

[0058] 606 Electronic Testing Equipment

[0059] 6071 Computer

[0060] 6072 control circuit Detailed Implementation

[0061] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0062] Before further describing the specific embodiments of this utility model, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments described below; it should also be understood that the terminology used in the embodiments of this utility model is for describing specific embodiments and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or as recommended by the respective manufacturers.

[0063] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise specified in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art. In addition to the specific methods, equipment, and materials used in the embodiments, based on the knowledge of the prior art possessed by one of ordinary skill in the art and the description of this invention, any prior art methods, equipment, and materials similar to or equivalent to those described, used, and materials in the embodiments of this invention may be used to implement this invention.

[0064] Please see Figures 1-3 It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0065] Existing oil evaluation methods mainly focus on the effects of heat, oxygen, moisture, and metal catalysis on the oxidation stability and material compatibility of oils. In the fields of electric drive systems for new energy vehicles, immersion cooling for data centers, and immersion cooling electrochemical energy storage, the service conditions of oils are more complex. This invention provides a multifunctional electrode that largely replicates the service conditions of oils in complex scenarios, enabling the testing of oil oxidation degradation under the combined effects of multiple physical factors such as electricity, magnetism, heat, oxygen, metal corrosion, and material compatibility. It also enables the simultaneous monitoring of the compatibility, corrosivity, and electrical properties of materials and electronic components with the oil during the oil oxidation process.

[0066] This invention provides a multifunctional electrode for oil oxidation testing. The multifunctional electrode includes a main frame, an electrode plate, a metal coil, terminals, and a mounting assembly 500. The main frame includes an upper cover 101, a lower cover 102, and multiple columns 103. The columns 103 are circumferentially distributed along the lower surface of the upper cover 101 and vertically fixed between the upper cover 101 and the lower cover 102, forming an internal cavity 104 between the columns 103 and the upper and lower covers 101 and 102. The electrode plate includes two symmetrically arranged metal plates 300, both vertically arranged within the internal cavity 104. The metal coil (not shown) is formed by winding metal wires along the outer surface of the columns 103. The terminals are provided with… The terminal block, located above the upper cover 101, includes two first terminals 401, two second terminals 402, and multiple third terminals 403. The two first terminals 401 are fixedly connected to the upper ends of the two metal plates 300 to achieve electric field loading. The two second terminals 402 are respectively connected to the start and end ends of the metal coil to achieve magnetic field loading and oil-metal corrosion testing. The third terminals 403 are connected to electronic components 4031 via wires. The electronic components 4031 are located in the internal cavity 104 to achieve compatibility testing between the oil and the electronic components 4031. The mounting assembly 500 is fixed below the upper cover 101 and located in the internal cavity 104 to mount the compatibility testing material 501.

[0067] Specifically, the upper end cover 101 and the lower end cover 102 are parallel and separated by multiple vertically arranged columns 103, forming an internal cavity 104; the electrode plate and the terminal are both made of conductive materials, preferably metallic conductive materials; the metal coil is made of wound metal wires, and the metal wires are made of copper, silver, or iron, which are easily corroded by oil; the diameter of the metal wires is usually less than 0.5 mm, preferably less than 0.25 mm, but the metal wires must have sufficient strength and not be easily broken; more preferably, the metal wires are made of copper and have a diameter of 0.2 mm; at least two third terminals 403 are provided, i.e., a group, or four are provided, and each group of third terminals 403 is symmetrically arranged. The electronic component 4031 is connected to the symmetrically distributed third terminals 403 through wires to realize the compatibility test between the oil and the electronic component 4031. The specific structure of the mounting component 500 is not specified here. The mounting component 500 is used to mount the compatibility test material 501 in the internal cavity 104 to achieve material compatibility testing.

[0068] As an example, both the upper cover 101 and the lower cover 102 are circular pieces or rings.

[0069] As an example, multiple columns 103 are evenly distributed circumferentially along the lower surface of the upper end cover 101, and at least three columns 103 are provided.

[0070] Specifically, the upper cover 101 is a closed circular piece or a partially hollow ring; the uprights 103 can be 3, 4, 5, or 6, etc. Preferably, the upper cover 101 and the lower cover 102 are circular pieces or rings with a thickness of less than 10 mm, and the upper cover 101 and the lower cover 102 are parallel and concentric circles by at least 3 uprights 103 with a length greater than 10 mm. More preferably, the upper cover 101 and the lower cover 102 have a thickness of 2 mm to 5 mm and the same diameter.

[0071] In one example of this utility model, see [reference]. Figure 1 As shown, the upper cover 101 and the lower cover 102 are hollow rings with the same diameter. The thickness of the upper cover 101 is 2.0 mm. The upper cover 101 and the lower cover 102 are parallel and concentric through 6 columns 103 with a length of 90 mm.

[0072] In one embodiment of this utility model, the upper end cover 101 is circular in shape, and the end plate 105 is fixed to the circular upper end cover 101 by symmetrical second terminals 402. The other first terminals 401 and third terminals 403 are also fixed to the end plate 105. The end plate 105 is preferably made of polytetrafluoroethylene.

[0073] When the upper cover 101 is in the shape of a circular piece, the end plate 105 may not be provided. In this case, the wiring terminals are symmetrically fixed on the upper cover 101.

[0074] As an example, each column 103 has multiple grooves 1031 circumferentially formed on its surface. The multiple grooves 1031 are arranged parallel to each other and are used to fix metal wires.

[0075] For details, please refer to Figure 1 Each column 103 has multiple grooves 1031, with each pair of adjacent grooves 1031 arranged in parallel. The number of grooves 1031 on each column 103 should be consistent. The metal coil is formed by winding a metal wire around the outer surface of multiple columns 103. The starting end of the metal wire is connected to one of the second terminals 402, and the other end is wound around a groove 1031 on the same plane. After one turn, it is wound around to the next adjacent groove 1031. After winding to the last groove 1031, the ending end of the metal wire is connected to another second terminal 402, thus forming a metal coil. The metal wire is embedded in the grooves 1031 of the column 103 to prevent contact between metal wires on adjacent planes.

[0076] In addition, to better secure the metal wire, two holes are made on any one of the posts 103, located at the upper and lower ends of the groove 1031 respectively. The starting end of the metal wire is connected to one of the second terminals 402, and the other end passes through one of the holes and is wound into a metal coil on the post 103. The metal wire is embedded in the groove 1031 of the post 103, and the ending end of the metal wire passes through the other hole, connecting the metal wire to the other second terminal 402. For details on the arrangement of the holes on the posts, see [link to documentation]. Figure 1 Each column has two holes, which allows for more variety in the winding of the metal coil, but there are no restrictions. In practical applications, any two holes can meet the usage requirements.

[0077] As an example, each metal plate 300 includes an upper metal plate 301 and a lower metal plate 302, the lateral spacing between the two upper metal plates 301 is greater than the lateral spacing between the two lower metal plates 302, and the internal space between the two upper metal plates 301 is used to accommodate the compatibility test material 501 mounted on the mounting assembly 500.

[0078] In one example of this utility model, see [reference]. Figure 2 The top of the upper metal plate 301 is also provided with a wiring lug, which has a fixing hole 3011. The first terminal 401 fixes the metal plate 300 to the lower surface of the upper end cover 101 through the corresponding fixing hole 3011. Then, each metal plate 300 is connected to the corresponding first terminal 401 through a wire to realize electric field loading. After the tops of the two upper metal plates 301 are fixed, the distance between the two upper metal plates 301 is fixed. (See reference...) Figure 1 As shown in the specific embodiment of this utility model, the lateral distance between the two upper metal plates 301 is much greater than the lateral distance between the two lower metal plates 302.

[0079] As an example, see Figure 2 Each lower metal plate 302 has at least two threaded holes. The insulating screw 3021 passes through the two corresponding threaded holes in sequence, and the lateral spacing between the two lower metal plates 302 is adjusted by the insulating washer 3023.

[0080] Specifically, each lower metal plate 302 has at least two threaded holes, and may have two, three or more, without excessive restrictions, but the number of threaded holes on the two metal plates must be consistent and the positions of the threaded holes must be corresponding; an insulating gasket 3023 is disposed between the two lower metal plates 302 to separate them; after the insulating screw 3021 passes through the two corresponding threaded holes, the open end of the insulating screw 3021 is fixed by an insulating nut 3022, thereby fixing the distance between the two lower metal plates 302.

[0081] In one example of this utility model, two lower metal plates 302 are located in the internal cavity 104, and the lateral spacing between the two lower metal plates 302 is adjusted by insulating screws 3021, insulating nuts 3022 and insulating washers 3023. Preferably, the lateral spacing is the thickness of the insulating washers 3023, and the thickness of the insulating washers 3023 is preferably 1 mm.

[0082] As an example, each lower metal plate 302 is provided with a flow hole 3024, which is located between two adjacent threaded holes and is used for the flow of oil.

[0083] For details, please refer to Figure 2 Each lower metal plate 302 has two threaded holes, and a flow hole 3024 is located between the two threaded holes. If each lower metal plate 302 has three threaded holes, a flow hole 3024 can be made between any two adjacent threaded holes. Alternatively, a flow hole 3024 can be made between every two adjacent threaded holes. There are no excessive restrictions here, as long as the flow of oil is guaranteed.

[0084] As an example, the multifunctional electrode also includes a gripping mechanism 200, which is fixed to the top of the main frame and is used to place the multifunctional electrode into or remove it from the oxidation container.

[0085] Preferably, the gripping mechanism 200 is located at the center above the upper end cover 101 and is connected to the upper end cover 101 by screws.

[0086] In one example of this utility model, please refer to Figure 1 When the upper end cover 101 is in the shape of a hollow ring, an end plate 105 is fixed on the upper surface of the upper end cover 101. The end plate 105 is arranged along the diameter direction of the upper end cover 101, and the gripping mechanism 200 is fixed to the center position of the end plate 105 by screws. Preferably, the two ends of the end plate 105 are fixed to the ring of the upper end cover 101 by symmetrically arranged second terminals 402. More preferably, the first terminals 401 are symmetrically arranged on the end plate 105, and the third terminals 403 are also arranged on the end plate 105.

[0087] Specifically, the end plate 105 is made of an oil-resistant solid insulating material, preferably polytetrafluoroethylene. As an example, the gripping mechanism 200, the upper end cover 101, the lower end cover 102, and the column 103 are all made of an oil-resistant solid insulating material.

[0088] Preferably, the gripping mechanism 200, the upper end cover 101, the lower end cover 102, and the column 103 are all made of polytetrafluoroethylene.

[0089] In addition, this utility model also provides an oil oxidation testing system, which includes the above-mentioned multifunctional electrode for oil oxidation testing, as well as compatibility testing material 501, electronic components 4031, electromagnetic field loading unit, testing unit and control unit.

[0090] The compatibility test material 501 is attached to the mounting component 500;

[0091] Electronic component 4031 is fixed in the internal cavity 104 via the third terminal 403;

[0092] The electromagnetic field loading unit includes an electric field loading power supply 601 and a magnetic field loading power supply 602. The electric field loading power supply 601 is connected to two first terminals 401 via wires to realize electric field loading during the oil testing process. The magnetic field loading power supply 602 is connected to two second terminals 402 via wires and uses a metal coil to generate a magnetic field to realize magnetic field loading during the oil testing process.

[0093] The testing unit includes a resistance testing device 603, a withstand voltage testing device 604, an impedance testing device 605, and an electronic testing device 606. The resistance testing device 603 is connected to two second terminals 402 via wires to test the metal corrosion performance of the oil. The withstand voltage testing device 604 is connected to two first terminals 401 via wires to test the breakdown voltage during oil testing. The impedance testing device 605 is connected to two first terminals 401 via wires to test the impedance value during oil testing. The electronic testing device 606 is connected to a third terminal 403 via wires to test the performance of electronic components 4031 under oil immersion conditions.

[0094] The control unit is electrically connected to the electric field loading power supply 601, the magnetic field loading power supply 602, the resistance testing device 603, the withstand voltage testing device 604, the impedance testing device 605, and the electronic testing device 606.

[0095] Specifically, the electric field loading power supply 601 includes a DC power supply or an AC power supply. The electric field loading power supply 601 is connected to the two first terminals 401 of the electrode plate via wires and a control unit, thereby realizing electric field loading during the oil testing process. The magnetic field loading power supply 602 includes a DC power supply or an AC power supply. The magnetic field loading power supply 602 is connected to the two first terminals 401 of the metal coil via wires and a control unit. The metal coil excites a magnetic field, thereby realizing magnetic field loading during the oil testing process. The resistance testing device 603 is connected to the two second terminals 402 of the metal coil via wires and a control unit. When the oil corrodes the metal wire, the diameter of the metal wire deforms, and its resistance value changes. The pressure resistance test device 604 is connected to the two first terminals 401 of the electrode plate via wires and the control unit, thereby realizing the test of breakdown voltage during the oil test; the impedance test device 605 is connected to the two first terminals 401 of the electrode plate via wires and the control unit, thereby realizing the test of impedance value during the oil test; the electronic components 4031 include capacitors, resistors and other electronic components 4031, which are connected to the third terminal 403 via wires, and combined with related electronic test devices 606 such as capacitors, electronics and oscilloscopes, the performance of electronic components 4031 under oil immersion conditions is tested in real time.

[0096] See Figure 3 The control unit includes a computer 6071 and a control circuit 6072. The control circuit 6072 can be integrated or distributed. The control circuit 6072 consists of several communication relays. It can be combined with bus technology, PLC control and related instruments and components through the computer 6071 to realize the on and off of different circuits through program control, thereby realizing electromagnetic field loading and testing of various electrical signals.

[0097] In a specific embodiment of this utility model, the electric field loading power supply 601 is an IT6953A DC power supply; the magnetic field loading power supply 602 is an IT-M7723 AC power supply; the resistance testing device 603 is a GOM-804 micro-ohmmeter; the withstand voltage testing device 604 is a GPT-9804 safety instrument; and the impedance testing device 605 is a TH2827C digital bridge.

[0098] In addition, this utility model also provides an oil oxidation test method, which uses the above-mentioned oil oxidation test system to perform oil oxidation testing, and specifically includes the following steps:

[0099] The compatibility test material 501 is hung on the mounting object, and the multifunctional electrode is immersed in heated oil through the gripping mechanism 200 to carry out the oil oxidation test. After the test, the compatibility test material 501 is taken out and its physical property changes are tested, thereby realizing the material compatibility test; among which, the physical properties include volume, hardness and mechanical properties.

[0100] The magnetic field loading power supply 602 is connected to two second terminals 402 via wires to achieve magnetic field loading, and the electric field loading power supply 601 is connected to two third terminals 403 via wires to achieve electric field loading.

[0101] The resistance testing device 603 is connected to two second terminals 402 via wires; the withstand voltage testing device 604 is connected to two first terminals 401 via wires; the impedance testing device 605 is connected to two first terminals 401 via wires; and the electronic testing device 606 is connected to a third terminal 403 via wires.

[0102] The control unit controls the switching on and off of different circuits through a program, thereby enabling the application of electric and magnetic fields and the testing of various electrical signals.

[0103] Specifically, the order of the above steps is not restricted in much detail. The resistance testing device 603 is used to test the metal corrosion performance of the oil, the withstand voltage testing device 604 is used to test the breakdown voltage during the oil test, the impedance testing device 605 is used to test the impedance value during the oil test, and the electronic testing device 606 is used to test the performance of the electronic component 4031 under the oil immersion condition.

[0104] In summary, the multifunctional electrode of this invention comprises a main frame consisting of an upper end cover, a lower end cover, and multiple columns, as well as an electrode plate, a metal coil, terminals, and a mounting assembly. The electrode plate is connected to two first terminals to achieve electric field loading, the metal coil is connected to two second terminals to achieve magnetic field loading and oil-metal corrosion testing, and the third terminal is connected to electronic components via wires to achieve compatibility testing between the oil and electronic components. Additionally, the mounting assembly is used to mount compatibility testing materials for material compatibility testing. This invention integrates a multifunctional electrode-based oil oxidation testing system for evaluating the comprehensive performance of oil under electromagnetic coupling conditions. It not only largely simulates the complex service conditions of oil, realizing the oxidation and decay testing of oil under the coupling of multiple physical fields such as electricity, magnetism, heat, oxygen, and metal, but also achieves simultaneous monitoring of material compatibility, compatibility between electronic components and oil, corrosion, and electrical performance during oil oxidation. This is of great significance for promoting the development and application of oils operating under electromagnetic environments. Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0105] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A multifunctional electrode for testing oil oxidation, characterized in that, The multifunctional electrode includes: The main frame includes an upper end cover, a lower end cover, and multiple columns. The multiple columns are circumferentially distributed along the lower surface of the upper end cover and vertically fixed between the upper end cover and the lower end cover. An internal cavity is formed between the multiple columns and the upper end cover and the lower end cover. The electrode plate comprises two symmetrically arranged metal plates, both of which are vertically arranged in the internal cavity; A metal coil, wherein the metal coil is formed by winding metal wires around the outer surface of multiple columns; The terminal block is located above the upper cover and includes two first terminals, two second terminals, and multiple third terminals. The two first terminals are fixedly connected to the upper ends of the two metal plates to apply an electric field. The two second terminals are respectively connected to the start and end ends of the metal coil to apply a magnetic field and perform oil-metal corrosion testing. The third terminals are connected to electronic components via wires, and the electronic components are located within the internal cavity to test the compatibility between the oil and the electronic components. A mounting assembly is fixed below the upper end cover and located in the internal cavity, and is used to mount compatibility test materials.

2. The multifunctional electrode for oil oxidation testing according to claim 1, characterized in that: Both the upper and lower end caps are in the shape of a disc or a hollow ring.

3. The multifunctional electrode for oil oxidation testing according to claim 1, characterized in that: The columns are evenly distributed circumferentially along the lower surface of the upper cover, and at least three columns are provided.

4. The multifunctional electrode for oil oxidation testing according to claim 1, characterized in that: Each of the columns has multiple grooves circumferentially formed on its surface, and the grooves are arranged parallel to each other to fix the metal wire.

5. The multifunctional electrode for oil oxidation testing according to claim 1, characterized in that: Each of the metal plates includes an upper metal plate and a lower metal plate, the lateral spacing between the two upper metal plates is greater than the lateral spacing between the two lower metal plates, and the internal space between the two upper metal plates is used to accommodate the compatibility test material mounted on the mounting assembly.

6. The multifunctional electrode for oil oxidation testing according to claim 5, characterized in that: At least two threaded holes are provided on each of the lower metal plates. Insulating screws pass through the two corresponding threaded holes in sequence, and the lateral spacing between the two lower metal plates is adjusted by insulating washers.

7. The multifunctional electrode for oil oxidation testing according to claim 6, characterized in that: Each of the lower metal plates has a flow hole located between two adjacent threaded holes, and the flow hole is used for the flow of oil.

8. The multifunctional electrode for oil oxidation testing according to claim 1, characterized in that: The multifunctional electrode also includes a gripping mechanism, which is fixed to the top of the main frame. The gripping mechanism is used to place the multifunctional electrode into or remove it from the oxidation container.

9. The multifunctional electrode for oil oxidation testing according to claim 8, characterized in that: The gripping mechanism, the upper end cover, the lower end cover, and the column are all made of oil-resistant solid insulating material.

10. An oil oxidation testing system, characterized in that: The oil oxidation testing system includes the multifunctional electrode for oil oxidation testing as described in any one of claims 1 to 9; as well as A compatibility testing material, which is attached to the mounting assembly; Electronic components, which are fixed in the internal cavity via a third terminal block; An electromagnetic field loading unit includes an electric field loading power supply and a magnetic field loading power supply. The electric field loading power supply is connected to two first terminals via wires to achieve electric field loading during the oil testing process. The magnetic field loading power supply is connected to two second terminals via wires to excite a magnetic field through the metal coil to achieve magnetic field loading during the oil testing process. The testing unit includes resistance testing equipment, withstand voltage testing equipment, impedance testing equipment, and electronic testing equipment. The resistance testing device is connected to the two second terminals via wires to test the metal corrosion performance of the oil; the withstand voltage testing device is connected to the two first terminals via wires to test the breakdown voltage during oil testing; the impedance testing device is connected to the two first terminals via wires to test the impedance value during oil testing; and the electronic testing device is connected to the third terminal via wires to test the performance of electronic components under oil immersion conditions. The control unit is electrically connected to the electric field loading power supply, the magnetic field loading power supply, the resistance testing equipment, the withstand voltage testing equipment, the impedance testing equipment, and the electronic testing equipment.

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