A transformer insulating oil aging test device

Abstract

The invention relates to the technical field of insulating oil detection, and discloses a transformer insulating oil aging test device, comprising a detection table, insulating oil is poured into each corresponding heating tank, and voltage can be adjusted by changing resistance through a sliding rheostat based on Ohm's law, so as to facilitate testing, and a heat absorption tube is arranged inside the sliding rheostat coil, when current passes through the sliding rheostat, electrons collide with atoms inside the sliding rheostat body, resulting in resistance to the movement of electrons, thereby generating heat energy, which is absorbed by a solution inside the heat absorption tube, and when the solution flows through a heat release block in a water pipe, the heat is transferred to the heat release block, and at this time, the heat is transferred to the insulating oil in the detection tank through the heat release block, so as to facilitate simulating the temperature of the actual working state of the insulating oil, so that the experimental data is more in line with reality, and the contact area can be increased by providing the heating tank, so as to improve the heat transfer efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of insulating oil detection, in particular to a transformer insulating oil aging test device. Background Art

[0002] In recent years, with the rapid development of my country's national economy and the sharp increase in electricity demand, the number of oil-immersed power equipment has also been rising. As a key part of oil-immersed power equipment, the number of oil-immersed power transformers has increased significantly with the development of the power grid. As one of the most important core equipment in the power system, the operating health of the power transformer is closely related to the safe operation of the power system. In actual operation, due to different loads, the insulation aging status of these equipment varies greatly. The management of old equipment requires scientific evaluation and the formulation of differentiated maintenance and retirement strategies. The aging degree of transformer insulating oil is an important indicator for evaluating its life.

[0003] Chinese patent publication number CN116482216A discloses "a method for detecting the aging degree of transformer insulating oil", which includes the following steps: step 1, obtaining discharge data of insulating oil samples with different aging degrees; step 2, calculating the bubble duration data of insulating oil samples with different aging degrees based on the obtained discharge data; step 3, clustering the bubble duration data, and defining the standard clustering range of different aging degrees; step 4, detecting the aging degree of the transformer insulating oil to be detected. The method of the present invention does not require complex pretreatment such as extraction of the insulating oil, and can realize the detection and evaluation of the aging degree of the insulating oil. It is fast and convenient, and solves the problems of sample detection damaging insulation, time-consuming and complicated operation, etc. It provides a scientific basis and indicator system for the retirement management of old equipment, and provides reliable support for improving the operational stability of power grid equipment.

[0004] In this scheme, a tip discharge device is used to conduct a tip discharge test on insulating oil samples with different aging degrees to obtain discharge data. However, the environmental conditions during the actual use of the insulating oil will be more complicated. Simulation only by controlling the voltage has great limitations and cannot well reflect the impact of environmental factors on the performance of the insulating oil during the actual use of the insulating oil. Therefore, a transformer insulating oil aging test device is proposed to solve the above-mentioned problems. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a transformer insulating oil aging test device, which solves the problem that simulation by controlling voltage cannot well simulate the actual working environment of the insulating oil by simulating the temperature of the insulating oil when working.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a transformer insulating oil aging test device, comprising a test table, the top of the test table is connected to a support table, the top of the support table is rotatably connected to a rotating ring, a stepping motor for driving the rotating ring to rotate is arranged inside the support table, the top of the rotating ring is connected to a detection ring, and the top of the detection ring is provided with a detection groove;

[0009] The inner wall of the detection ring is provided with a heating groove, the top of the support platform is connected with a liquid storage box, a sliding rheostat is arranged above the liquid storage box, the sliding rheostat is connected to the top of the support platform through a support rod, a heat absorption tube is arranged inside the sliding rheostat coil, and both ends of the heat absorption tube are connected to the liquid storage box through a water pipe, a heat release block is slidably connected inside the heating groove, and the heat release block is connected to the water pipe, a voltage regulating component is arranged above the sliding rheostat, insulating oil is poured into each corresponding heating groove, and the voltage can be adjusted by changing the resistance through the sliding rheostat based on Ohm's law, so as to facilitate The test is carried out, and a heat absorbing tube is arranged inside the sliding rheostat coil. When current passes through the sliding rheostat, electrons collide with atoms inside the sliding rheostat body, resulting in resistance to the movement of electrons, thereby generating heat energy. The heat energy is absorbed by the solution inside the heat absorbing tube. When the solution flows through the heat releasing block in the water pipe, the heat is transferred to the heat releasing block. At this time, the heat energy is transferred to the insulating oil in the detection tank through the heat releasing block, so as to simulate the temperature of the actual working state of the insulating oil, making the experimental data more in line with reality. In addition, by opening a heating tank, the contact area can be increased, thereby improving the heat transfer efficiency.

[0010] Preferably, a circle of heat conducting plates is provided on the heat absorbing tube. By connecting a circle of heat conducting plates on the heat absorbing tube, the heat absorption efficiency of the heat absorbing tube can be improved to facilitate subsequent heating. The absorbed heat can also dissipate heat for the sliding rheostat, so that the sliding rheostat is at a suitable working temperature, avoiding failure due to excessive temperature.

[0011] Preferably, the inner wall of the heat absorption tube is connected to a limiting ring, and an impeller is provided between the limiting rings. The rotation of the impeller can drive the solution to flow, so that the solution in the heat absorption tube is in a flowing state, so as to continuously input a solution with a lower temperature to avoid the solution temperature being too high and affecting the heat absorption efficiency.

[0012] Preferably, the outer wall of the impeller is connected to a magnetic block, which is slidably connected to the position between the limit rings. By arranging the magnetic block on the outer wall of the impeller, the magnetic block releases magnetic lines of force through the magnetic field formed when the current passes through the sliding rheostat coil. The magnetic fields of the magnetic block and the coil interact with each other to generate a torque, causing the magnetic block to rotate, thereby driving the impeller to rotate.

[0013] Preferably, an electrode rod is provided inside the detection tank, and the electrode rod extends to the outside of the detection tank, and the electrode rod is immersed in the insulating oil in the detection tank to facilitate testing of the voltage that breaks down the insulating oil.

[0014] Preferably, a support block is connected to the top of the detection table, and an elastic guide is connected to one side of the support block opposite to the electrode rod, and a connecting rod is connected to one end of the elastic guide corresponding to the electrode rod. The elastic guide is provided as a support so that the connecting rod can be easily abutted against the electrode rod to facilitate electrical connection.

[0015] Preferably, the support block is connected to a limiting rod at a position between the elastic guides, the outer wall of the limiting rod is slidably connected to the limiting block, and the two sides of the limiting block are respectively connected to the connecting rods at corresponding positions, and relative limiting is performed through the connection relationship between the limiting rod and the limiting block to ensure the stability of the connecting rod and the electrode rod.

[0016] Preferably, the number of the detection slots is ten groups, the rotation angle position of the stepper motor is thirty-six degrees, and the detection ring is connected with an arc block corresponding to the position between each two groups of detection slots. By setting up multiple groups of detection slots, it is convenient to test the insulating oil in batches. The detection ring is driven to rotate by the stepper motor, and the detection slot is replaced for detection. When the detection ring rotates, the arc block squeezes the connecting rod and the elastic guide contracts to separate the connecting rod from the electrode rod, and the power supply is disconnected to facilitate switching between different detection slots for detection.

[0017] Preferably, the voltage regulating assembly includes a vortex rod, which is arranged above the sliding rheostat. The outer wall of the vortex rod is slidably connected with a slip ring, and the slip ring is connected to the adjustment slider of the sliding rheostat. Each time the detection ring rotates, the vortex rod will also rotate together. When the vortex rod rotates, the adjustment slider connected to the slip ring moves together, so as to facilitate the adjustment of the voltage by changing the resistance, so as to facilitate the simulation of different voltage states.

[0018] Preferably, the voltage regulating assembly also includes a support frame, which is connected to the top of the detection ring and the vortex rod. The two ends of the vortex rod are respectively connected to limiting balls. By setting the limiting balls, the slip ring can be prevented from detaching from the vortex rod.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention provides a transformer insulating oil aging test device, which has the following beneficial effects:

[0021] 1. The transformer insulating oil aging test device pours insulating oil into each corresponding heating tank. Based on Ohm's law, the voltage can be adjusted by changing the resistance through the sliding rheostat to facilitate testing. A heat absorption tube is provided inside the sliding rheostat coil. When current passes through the sliding rheostat, electrons collide with atoms inside the sliding rheostat body, resulting in resistance to the movement of electrons, thereby generating heat energy. The heat energy is absorbed by the solution inside the heat absorption tube. When the solution flows through the heat release block in the water pipe, the heat is transferred to the heat release block. At this time, the heat energy is transferred to the insulating oil in the detection tank through the heat release block, so as to simulate the temperature of the actual working state of the insulating oil, making the experimental data more in line with reality. In addition, the contact area can be increased by opening the heating tank to improve the heat transfer efficiency.

[0022] 2. The transformer insulating oil aging test device drives the detection ring to rotate through a stepper motor, and replaces the detection slot for detection. When the detection ring rotates, the arc block squeezes the connecting rod and the elastic guide contracts to separate the connecting rod from the electrode rod. The power supply has been disconnected to facilitate switching of different detection slots for detection. Each time the detection ring rotates, the vortex rod will also rotate. When the vortex rod rotates, the adjustment slider connected to the slip ring moves together, so that the voltage can be adjusted by changing the resistance, so as to simulate different voltage states.

[0023] 3. The transformer insulating oil aging test device, by arranging a magnetic block on the outer wall of the impeller, forms a magnetic field when current passes through the coil of the sliding rheostat, and the magnetic block releases magnetic lines of force. The magnetic fields of the magnetic block and the coil interact with each other to generate a torque, causing the magnetic block to rotate, so as to facilitate the rotation of the impeller. The rotation of the impeller can drive the solution to flow, so that the solution in the heat absorption tube is in a flowing state, so as to continuously input a solution with a lower temperature to avoid the solution temperature being too high and affecting the heat absorption efficiency. The heat absorption efficiency of the heat absorption tube can be improved by connecting a circle of heat conducting plates to the heat absorption tube to facilitate subsequent heating, and the absorbed heat can dissipate the heat for the sliding rheostat, so that the sliding rheostat is at a suitable working temperature, avoiding the problem of failure due to excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a partial cross-sectional view of the present invention;

[0026] Figure 3 For the present invention Figure 2 A magnified view of point A;

[0027] Figure 4 A top view of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the voltage regulating assembly in the present invention;

[0029] Figure 6 A diagram showing the connection relationship between the sliding resistor and the liquid storage box in the present invention;

[0030] Figure 7 It is a partial cross-sectional view of the heat absorption tube in the present invention;

[0031] Figure 8 For the present invention Figure 7 Enlarged view of point B.

[0032] In the figure: 1. detection table; 11. support table; 12. swivel; 2. detection ring; 21. detection slot; 22. electrode rod; 23. arc block; 24. support block; 25. elastic guide; 26. connecting rod; 261. limit block; 262. limit rod; 27. heating slot; 3. sliding rheostat; 31. support rod; 4. liquid storage box; 41. water pipe; 411. heat absorption tube; 4111. heat conducting sheet; 4112. limit ring; 4113. impeller; 4114. magnetic block; 42. heat release block; 5. voltage regulating assembly; 51. support frame; 52. vortex rod; 521. limit ball; 522. slip ring. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] like Figure 1 , Figure 4 , Figure 6 , Figure 7 , Figure 8As shown, a transformer insulating oil aging test device includes a test table 1, the top of the test table 1 is connected to a support table 11, the top of the support table 11 is rotatably connected to a swivel 12, the support table 11 is provided with a stepping motor for driving the swivel 12 to rotate, the top of the swivel 12 is connected to a test ring 2, the top of the test ring 2 is provided with a test groove 21, the inner wall of the test ring 2 is provided with a heating groove 27, the top of the support table 11 is connected to a liquid storage box 4, the top of the liquid storage box 4 is provided with a sliding rheostat 3, the sliding rheostat 3 is connected to the top of the support table 11 through a support rod 31, the inside of the coil of the sliding rheostat 3 is provided with a heat absorption tube 411, and the two ends of the heat absorption tube 411 are connected to the liquid storage box 4 through water pipes 41, and the heating groove 27 is provided on the inner wall of the test ring 2. The heat release block 42 is slidably connected inside the heat tank 27, and the heat release block 42 is connected to the water pipe 41. A voltage regulating assembly 5 is arranged above the sliding rheostat 3. Insulating oil is poured into each corresponding heating tank 27. Based on Ohm's law, the voltage can be adjusted by changing the resistance of the sliding rheostat 3 to facilitate testing. In addition, a heat absorption tube 411 is arranged inside the coil of the sliding rheostat 3. When current passes through the sliding rheostat 3, electrons collide with atoms inside the body of the sliding rheostat 3, resulting in resistance to the movement of electrons, thereby generating heat energy. The heat energy is absorbed by the solution inside the heat absorption tube 411. When the solution flows through the heat release block 42 in the water pipe 41, the heat is transferred to the heat release block 42. At this time, the heat energy is absorbed by the solution inside the heat release block 411. 2 is transferred to the insulating oil in the detection tank 21 to facilitate the simulation of the temperature of the actual working state of the insulating oil, so that the experimental data is more in line with reality, and the contact area can be increased by opening the heating tank 27 to improve the heat transfer efficiency. A circle of heat conducting sheets 4111 is arranged on the heat absorbing tube 411. By connecting a circle of heat conducting sheets 4111 to the heat absorbing tube 411, the heat absorption efficiency of the heat absorbing tube 411 can be improved to facilitate subsequent heating, and the absorbed heat can dissipate heat for the sliding rheostat 3, so that the sliding rheostat 3 is at a suitable working temperature to avoid the problem of failure due to excessive temperature. The inner wall of the heat absorbing tube 411 is connected to the limiting ring 4112, and the position between the limiting rings 4112 is provided with an impeller. 4113, the rotation of the impeller 4113 can drive the solution to flow, so that the solution in the heat absorption tube 411 is in a flowing state, so as to continuously input the solution in a lower temperature state to avoid the solution temperature being too high and affecting the heat absorption efficiency. The outer wall of the impeller 4113 is connected with a magnetic block 4114, and the magnetic block 4114 is slidably connected to the position between the limit rings 4112. By arranging the magnetic block 4114 on the outer wall of the impeller 4113, the magnetic field formed when the current passes through the coil of the sliding rheostat 3, the magnetic block 4114 releases the magnetic lines of force, and the magnetic fields of the magnetic block 4114 and the coil interact with each other to generate a torque, so that the magnetic block 4114 rotates, so as to facilitate the rotation of the impeller 4113.

[0036] In this embodiment, insulating oil is poured into each corresponding heating tank 27. Based on Ohm's law, the voltage can be adjusted by changing the resistance of the sliding rheostat 3 to facilitate testing. In addition, a heat absorption tube 411 is provided inside the coil of the sliding rheostat 3. When current passes through the sliding rheostat 3, electrons collide with atoms inside the sliding rheostat 3, causing resistance to the movement of electrons, thereby generating heat energy. The heat energy is absorbed by the solution inside the heat absorption tube 411. When the solution flows through the heat release block 42 in the water pipe 41, the heat is transferred to the heat release block 42. At this time, the heat energy is transferred to the insulating oil in the detection tank 21 through the heat release block 42, so as to simulate the temperature of the actual working state of the insulating oil, so that the experimental data is more in line with reality. In addition, by providing the heating tank 27, The contact area can be increased to improve the heat transfer efficiency. By connecting a circle of heat conducting sheet 4111 to the heat absorbing tube 411, the heat absorption efficiency of the heat absorbing tube 411 can be improved to facilitate subsequent heating. By setting a magnetic block 4114 on the outer wall of the impeller 4113, the magnetic block 4114 releases magnetic lines of force through the magnetic field formed when the current passes through the coil of the sliding rheostat 3. The magnetic fields of the magnetic block 4114 and the coil interact with each other to generate a torque, so that the magnetic block 4114 rotates to facilitate the rotation of the impeller 4113. The rotation of the impeller 4113 can drive the solution to flow, so that the solution in the heat absorbing tube 411 is in a flowing state, so as to continuously input a solution in a lower temperature state to avoid the solution temperature being too high to affect the heat absorption efficiency. The absorbed heat can also play a role in heat dissipation for the sliding rheostat 3, so that the sliding rheostat 3 is at a suitable working temperature to avoid the problem of failure due to excessive temperature.

[0037] Example 2

[0038] like Figure 2 , Figure 3As shown, an electrode rod 22 is arranged inside the detection tank 21, and the electrode rod 22 extends to the outside of the detection tank 21. The electrode rod 22 is immersed in the insulating oil in the detection tank 21 to facilitate the test of the voltage of the insulating oil breakdown. A support block 24 is connected to the top of the detection platform 1. The support block 24 is connected to an elastic guide 25 on one side of the electrode rod 22. The elastic guide 25 is connected to a connecting rod 26 at one end of the electrode rod 22. The elastic guide 25 is provided as a support to facilitate the connection rod 26 to abut against the electrode rod 22 for electrical connection. The support block 24 is located between the elastic guides 25 and is connected to a limiting rod 262. The outer wall of the limiting rod 262 is slidably connected to the limiting block 261. The limiting block 261 is The two sides are respectively connected to the connecting rod 26 at the corresponding position, and are relatively limited by the connection relationship between the limit rod 262 and the limit block 261 to ensure the stability of the connecting rod 26 and the electrode rod 22. The number of detection slots 21 is ten groups, and the rotation angle position of the stepper motor is thirty-six degrees. The detection ring 2 is respectively connected with an arc block 23 corresponding to the position between each two groups of detection slots 21. By setting multiple groups of detection slots 21, it is convenient to test the insulating oil in batches. The detection ring 2 is driven to rotate by the stepper motor, and the detection slot 21 is replaced for detection. When the detection ring 2 rotates, the arc block 23 squeezes the connecting rod 26 and the elastic guide 25 contracts to separate the connecting rod 26 from the electrode rod 22. The power supply has been disconnected to facilitate switching of different detection slots 21 for detection.

[0039] In this embodiment, an elastic guide 25 is provided as a support to facilitate the connection rod 26 to abut against the electrode rod 22 for electrical connection. Relative limiting is performed by the connection relationship between the limit rod 262 and the limit block 261 to ensure the stability of the connection rod 26 and the electrode rod 22, so as to facilitate the testing of the voltage that breaks through the insulating oil. In addition, multiple groups of detection slots 21 are provided to facilitate batch testing of the insulating oil. The detection ring 2 is driven to rotate by a stepper motor, and the detection slot 21 is replaced for detection. When the detection ring 2 rotates, the arc block 23 squeezes the connection rod 26, and the elastic guide 25 contracts to separate the connection rod 26 from the electrode rod 22, and the power supply is disconnected to facilitate switching of different detection slots 21 for detection.

[0040] Example 3

[0041] like Figure 5As shown, the voltage regulating assembly 5 includes a vortex rod 52, which is arranged above the sliding rheostat 3. The outer wall of the vortex rod 52 is slidably connected with a slip ring 522, and the slip ring 522 is connected to the adjustment slider of the sliding rheostat 3. Each time the detection ring 2 rotates, the vortex rod 52 will also rotate together. When the vortex rod 52 rotates, the adjustment slider connected to the slip ring 522 moves together, so that the voltage can be adjusted by changing the resistance, so as to simulate different voltage states. The voltage regulating assembly 5 also includes a support frame 51, which is connected to the top of the detection ring 2, and the support frame 51 is connected to the vortex rod 52. The two ends of the vortex rod 52 are respectively connected to limit balls 521. By setting the limit balls 521, the slip ring 522 can be prevented from detaching from the vortex rod 52.

[0042] In this embodiment, each time the detection ring 2 rotates, the vortex rod 52 will also rotate. When the vortex rod 52 rotates, the adjustment slider connected to the slip ring 522 moves together, so that the voltage can be adjusted by changing the resistance, so as to simulate different voltage states.

[0043] How it works

[0044] In summary, the transformer insulating oil aging test device pours the insulating oil into each corresponding heating slot 27, and sets the elastic guide 25 as a support to facilitate the connection rod 26 to abut against the electrode rod 22 for electrical connection, and relatively limits the connection between the limit rod 262 and the limit block 261 to ensure the stability of the connecting rod 26 and the electrode rod 22, so as to facilitate the test of the voltage of the breakdown insulating oil, and sets a plurality of detection slots 21 to facilitate batch testing of the insulating oil, and drives the detection ring 2 to rotate by a stepper motor, and replaces the detection slot 21 for detection, and when the detection ring 2 rotates When the arc block 23 squeezes the connecting rod 26, the elastic guide 25 contracts to separate the connecting rod 26 from the electrode rod 22, and the power supply is disconnected to facilitate switching of different detection slots 21 for detection. When the detection ring 2 rotates each time, the vortex rod 52 will also rotate together. When the vortex rod 52 rotates, the adjustment slider connected to the slip ring 522 moves together. Based on Ohm's law, the voltage can be adjusted by changing the resistance of the sliding rheostat 3 to facilitate testing. In addition, a heat absorption tube 411 is provided inside the coil of the sliding rheostat 3. When current passes through the sliding rheostat 3, electrons are moved in the sliding rheostat 3. The electrons collide with the atoms inside the body, causing resistance to the movement of electrons, thereby generating heat energy, which is absorbed by the solution inside the heat absorption tube 411. When the solution flows through the heat release block 42 in the water pipe 41, the heat is transferred to the heat release block 42. At this time, the heat energy is transferred to the insulating oil in the detection tank 21 through the heat release block 42, so as to simulate the temperature of the actual working state of the insulating oil, making the experimental data more realistic. In addition, by providing the heating tank 27, the contact area can be increased, the heat transfer efficiency can be improved, and by connecting a circle of heat conductive sheets 4111 to the heat absorption tube 411, the heat absorption of the heat absorption tube 411 can be improved. In order to improve efficiency and facilitate subsequent heating, a magnetic block 4114 is arranged on the outer wall of the impeller 4113. When the current passes through the coil of the sliding rheostat 3, the magnetic block 4114 releases magnetic lines of force. The magnetic fields of the magnetic block 4114 and the coil interact with each other, which will generate a torque, causing the magnetic block 4114 to rotate, so as to drive the impeller 4113 to rotate. The rotation of the impeller 4113 can drive the solution to flow, so that the solution in the heat absorption tube 411 is in a flowing state, so as to continuously input a solution in a lower temperature state, so as to avoid the solution temperature being too high to affect the efficiency of heat absorption. The absorbed heat can also play a role in heat dissipation for the sliding rheostat 3, so that the sliding rheostat 3 is at a suitable working temperature, avoiding the problem of failure due to excessive temperature.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A transformer insulating oil aging test device, comprising a test bench (1), characterized in that: The top of the detection platform (1) is connected to a support platform (11), the top of the support platform (11) is rotatably connected to a rotating ring (12), a stepping motor for driving the rotating ring (12) to rotate is arranged inside the support platform (11), the top of the rotating ring (12) is connected to a detection ring (2), and the top of the detection ring (2) is provided with a detection groove (21); The inner wall of the detection ring (2) is provided with a heating groove (27); the top of the support platform (11) is connected to a liquid storage box (4); a sliding rheostat (3) is arranged above the liquid storage box (4); the sliding rheostat (3) is connected to the top of the support platform (11) through a support rod (31); a heat absorbing tube (411) is arranged inside the coil of the sliding rheostat (3); and both ends of the heat absorbing tube (411) are connected to the liquid storage box (4) through a water pipe (41); a heat releasing block (42) is slidably connected inside the heating groove (27); the heat releasing block (42) is connected to the water pipe (41); and a voltage regulating assembly (5) is arranged above the sliding rheostat (3).

2. A transformer insulating oil aging test device according to claim 1, characterized in that: A circle of heat conducting sheets (4111) is provided on the heat absorbing tube (411).

3. A transformer insulating oil aging test device according to claim 2, characterized in that: The inner wall of the heat absorption tube (411) is connected to a limiting ring (4112), and an impeller (4113) is arranged between the limiting rings (4112).

4. A transformer insulating oil aging test device according to claim 3, characterized in that: The outer wall of the impeller (4113) is connected to a magnetic block (4114), and the magnetic block (4114) is slidably connected to a position between the limiting rings (4112).

5. The transformer insulating oil aging test device according to claim 1, characterized in that: An electrode rod (22) is arranged inside the detection groove (21), and the electrode rod (22) extends to the outside of the detection groove (21).

6. A transformer insulating oil aging test device according to claim 5, characterized in that: The top of the detection platform (1) is connected to a support block (24), one side of the support block (24) corresponding to the electrode rod (22) is connected to an elastic guide (25), and one end of the elastic guide (25) corresponding to the electrode rod (22) is connected to a connecting rod (26).

7. A transformer insulating oil aging test device according to claim 6, characterized in that: The support block (24) is connected to a limit rod (262) at a position between the elastic guide members (25); the outer wall of the limit rod (262) is slidably connected to a limit block (261); and both sides of the limit block (261) are respectively connected to connecting rods (26) at corresponding positions.

8. The transformer insulating oil aging test device according to claim 1, characterized in that: The number of the detection slots (21) is ten groups, the rotation angle position of the stepping motor is thirty-six degrees, and the detection ring (2) is respectively connected with an arc block (23) at the position between each two groups of detection slots (21).

9. A transformer insulating oil aging test device according to claim 1, characterized in that: The voltage regulating assembly (5) comprises a vortex rod (52), the vortex rod (52) being arranged above the sliding rheostat (3), the outer wall of the vortex rod (52) being slidably connected with a slip ring (522), and the slip ring (522) being connected to an adjusting slider of the sliding rheostat (3).

10. A transformer insulating oil aging test device according to claim 9, characterized in that: The voltage regulating assembly (5) further comprises a support frame (51), wherein the support frame (51) is connected to the top of the detection ring (2), and the support frame (51) is connected to a vortex rod (52), and both ends of the vortex rod (52) are respectively connected to limiting balls (521).

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