Self-extinguishing silicon fluoride oil insulation and aging experiment device

Abstract

The utility model discloses a self-extinguishing fluoride silicon oil insulation and aging experiment device, which comprises a container, two electrode assemblies and two locking screws, and is characterized in that the side wall of the container is convexly provided with two oppositely arranged mounting parts; the mounting part is provided with a mounting channel communicated with the interior of the container and a first threaded hole communicated with the mounting channel; the two electrode assemblies are in one-to-one correspondence with the two mounting channels, each electrode assembly is slidably mounted in the corresponding mounting channel, and one end of each electrode assembly extends into the container; the two locking screws are in threaded connection with the two first threaded holes in a one-to-one correspondence mode, so that after the electrode assembly slides to a set position, one end of each locking screw abuts against the electrode assembly to fix the electrode assembly. The electrode assembly is slidably mounted on the side wall of the container, only the electrode assembly needs to be pushed during adjustment, the container does not need to be opened, operation is easy, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of silicone oil insulation aging experiments, in particular to a self-extinguishing fluorinated silicone oil insulation and aging experiment device. Background Art

[0002] Mineral oil has long been widely used in the insulation systems of power equipment. However, mineral oil has biotoxic side effects, poor biodegradability, and a low flash point, making it difficult to meet higher fire protection and environmental standards. Vegetable oil has a higher flash point, better fire resistance, and is easily biodegradable. However, its relatively poor antioxidant capacity and water absorption have prevented widespread use. Silicone oil, as an organosilicon liquid, is currently primarily used in traction transformers, such as railways. However, silicone insulating oil suffers from a significant degradation of its insulation performance after repeated breakdown. Fluorinated silicone oil is a fluorine-modified silicone oil with a flash point above 300°C. It is not easily ignited and automatically extinguishes its flame upon arc cessation. The strong electronegativity of the fluorine atoms in its molecular structure enhances its arc extinguishing ability. The fluorine atoms in the fluorinated silicone oil molecule tightly encapsulate the Si-O bond backbone, creating a "shielding effect" that ensures superior chemical and thermal stability compared to silicone and vegetable oils. Fluorinated silicone oil requires insulation and aging testing before use in transformer insulation systems.

[0003] Patent CN111638433A discloses an experimental device and method for partial discharge decomposition of insulating silicone oil with adjustable ambient humidity. The experimental device includes a partial discharge circuit unit for providing a voltage applied to the insulating silicone oil, an insulating silicone oil partial discharge decomposition experimental unit connected to the partial discharge circuit unit, and an ambient humidity regulator connected to the insulating silicone oil partial discharge decomposition experimental unit. The insulating silicone oil partial discharge decomposition experimental unit includes a sealed cavity, an oil storage tank connected to the sealed cavity, a needle electrode and a plate electrode arranged oppositely in the sealed cavity, and a vacuum pump connected to the sealed cavity. The ambient humidity regulator includes a three-way quartz tube and a three-way quartz tube connected to a trace moisture injector and a dry air bottle.

[0004] In the above-mentioned prior art, the sealed cavity needs to be opened when adjusting the electrode, which is cumbersome to operate and inconvenient to use. Utility Model Content

[0005] The purpose of the utility model is to overcome the above technical deficiencies and propose a self-extinguishing fluorinated silicone oil insulation and aging test device to solve the technical problems in the prior art that the sealed cavity needs to be opened when adjusting the electrode, which is cumbersome to operate and inconvenient to use.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] The utility model provides a self-extinguishing fluorinated silicone oil insulation and aging test device, comprising:

[0008] A container, wherein the side wall of the container is convexly formed with two mounting portions arranged opposite to each other, the mounting portions being provided with a mounting channel communicating with the interior of the container and a first threaded hole communicating with the mounting channel;

[0009] Two electrode assemblies are slidably mounted in the mounting channel and one end of each electrode assembly extends into the container; and

[0010] Two locking screws are threadedly connected to the two first threaded holes in a one-to-one correspondence, so that after the electrode assembly slides to a set position, one end of the locking screw abuts against the electrode assembly to fix the electrode assembly.

[0011] In some embodiments, the electrode assembly includes a conductive rod and an electrode, the conductive rod is adapted to the mounting channel, the conductive rod is slidably mounted in the mounting channel, and its two ends extend out of the mounting channel, and the electrode is arranged at one end of the conductive rod located in the container.

[0012] In some embodiments, the conductive rod and the electrode are detachably connected.

[0013] In some embodiments, the outer periphery of one end of the conductive rod located in the container is provided with a thread, the electrode is provided with a second threaded hole, and the conductive rod is threadedly connected to the second threaded hole.

[0014] In some embodiments, a sealing member is further provided between the conductive rod and the mounting channel, so that the conductive rod is in sealing cooperation with the side wall of the mounting channel.

[0015] In some embodiments, the seal includes two sealing rings, which are arranged at opposite ends of the mounting channel, and the inner sides of the sealing rings abut against the circumference of the conductive rod so that the conductive rod is sealed and matched with the mounting channel, wherein the first threaded hole is located between the two sealing rings.

[0016] In some embodiments, a third threaded hole is provided on an end surface of the conductive rod located outside the container, and the third threaded hole is used to connect to a wiring terminal.

[0017] In some embodiments, the electrode is one of a needle electrode, a plate electrode, and a ball electrode.

[0018] In some embodiments, the upper end of the container is provided with a sampling port communicating with the interior thereof;

[0019] The self-extinguishing fluorinated silicone oil insulation and aging test device further comprises a valve, which is arranged at the sampling port.

[0020] In some embodiments, the container includes a tank body and an upper cover, the upper end of the tank body is open, the upper cover is provided at the open end of the tank body, the upper cover is detachably connected to the tank body, wherein the sampling port is provided on the upper cover.

[0021] Compared with the prior art, the self-extinguishing fluorinated silicone oil insulation and aging experimental device provided by the utility model has two relatively arranged mounting parts protruding from the side wall of the container, and the mounting part is provided with a mounting channel connected to the interior of the container and a first threaded hole connected to the mounting channel; the electrode assembly is slidably installed in the mounting channel and one end thereof extends into the container; two locking screws are threadedly connected to the two first threaded holes in a one-to-one correspondence. When in use, the two electrode assemblies can be slid to adjust the length of the electrode assembly extending into the container, and then the spacing between the two electrode assemblies is adjusted so that the spacing between the two electrode assemblies meets the experimental requirements. When the adjustment is completed, the locking screw is rotated, and the locking screw can extend into the mounting channel and abut against the electrode assembly, thereby locking the electrode assembly, limiting the movement of the electrode assembly to achieve the purpose of fixing the electrode assembly. In this application, the electrode assembly is slidably installed on the side wall of the container. When adjusting, you only need to push the electrode assembly without opening the container. The operation is simple and easy to use.

[0022] The above description is only an overview of the technical solution of the present invention. In order to enable a clearer understanding of the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail in the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of an embodiment of a self-extinguishing fluorinated silicone oil insulation and aging test device provided by the utility model;

[0024] Figure 2 yes Figure 1 Index diagram of self-extinguishing fluorinated silicone oil insulation and aging test device;

[0025] Figure 3 yes Figure 1 Partial cross-sectional view of the self-extinguishing fluorinated silicone oil insulation and aging test device.

[0026] Description of reference numerals:

[0027] 1-container, 11-tank body, 12-upper cover, 2-electrode assembly, 21-conductive rod, 211-third threaded hole, 22-electrode, 3-sealing ring, 4-mounting seat, 41-mounting channel, 42-first threaded hole, 5-nut, 6-gasket, 7-valve, 8-locking screw. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] In order to solve the technical problem in the prior art that the sealed cavity needs to be opened when adjusting the electrode, which is cumbersome and inconvenient to use, the utility model provides a self-extinguishing fluorinated silicone oil insulation and aging experimental device. The electrode assembly is slidably installed on the side wall of the container. When adjusting, it is only necessary to push the electrode assembly without opening the container. The operation is simple and easy to use.

[0030] See also Figure 1 , Figure 1 This is a structural diagram of a self-extinguishing fluorinated silicone oil insulation and aging test device in one embodiment of the present invention.

[0031] The utility model provides a self-extinguishing fluorinated silicone oil insulation and aging test device, comprising a container 1, two electrode assemblies 2 and two locking screws 8, the side wall of the container 1 is convexly formed with two relatively arranged mounting parts, the mounting part is provided with a mounting channel 41 connected to the interior of the container 1 and a first threaded hole 42 connected to the mounting channel 41; the two electrode assemblies 2 correspond to the two mounting channels 41 one by one, each of the electrode assemblies is slidably installed in the mounting channel 41 and one end thereof extends into the container 1; the two locking screws 8 are threadedly connected to the two first threaded holes 42 one by one, so that after the electrode assembly 2 slides to the set position, one end of the locking screw 8 abuts against the electrode assembly 2 to fix the electrode assembly 2.

[0032] In this embodiment, the side wall of the container 1 is convexly formed with two relatively arranged mounting parts, and the mounting part is provided with a mounting channel 41 connected to the interior of the container 1 and a first threaded hole 42 connected to the mounting channel 41; the electrode assembly 2 is slidably mounted in the mounting channel 41 and one end thereof extends into the container 1; two locking screws 8 are threadedly connected to the two first threaded holes 42 in a one-to-one correspondence. During specific use, the two electrode assemblies 2 can be slid to adjust the length of the electrode assembly 2 extending into the container 1, and then the spacing between the two electrode assemblies 2 is adjusted so that the spacing between the two electrode assemblies 2 meets the experimental requirements. When the adjustment is completed, the locking screw 8 is rotated, and the locking screw 8 can be extended into the mounting channel 41 and abut against the electrode assembly 2, thereby locking the electrode assembly 2, limiting the movement of the electrode assembly 2 to achieve the purpose of fixing the electrode assembly 2. In this application, the electrode assembly 2 is slidably mounted on the side wall of the container 1. When adjusting, it is only necessary to push the electrode assembly 2 without opening the container 1. The operation is simple and easy to use.

[0033] In one embodiment, see Figure 2 and Figure 3 The electrode assembly 2 includes a conductive rod 21 and an electrode 22. The conductive rod 21 is adapted to the mounting channel 41. The conductive rod 21 is slidably mounted on the mounting channel 41, and its two ends extend out of the mounting channel 41. The electrode 22 is provided at one end of the conductive rod 21 located in the container 1.

[0034] In this embodiment, the diameter of the conductive rod 21 is adapted to the diameter of the installation channel 41, and the length of the conductive rod 21 is greater than the length of the installation channel 41, so that both ends of the conductive rod 21 extend out of the installation channel, one end extends into the container 1, and the other end is located outside the container 1 for connecting to electricity, and the electrode 22 is connected to the end of the conductive rod 21 located in the container 1, so that the electrode 22 is located in the container 1, and the position of the electrode 22 can be adjusted by sliding the conductive rod 21.

[0035] In one embodiment, the conductive rod 21 and the electrode 22 are detachably connected.

[0036] In this embodiment, since the size of the electrode 22 is larger than that of the conductive rod 21, it cannot pass through the installation channel 41. Since the two conductive rods 21 are arranged opposite to each other and are long, installation and disassembly are inconvenient. Therefore, the conductive rod 21 and the electrode 22 can be set to be detachable and connected. During installation, the conductive rod 21 can be first inserted into the installation channel 41, and then the electrode 22 can be placed in the container 1 to connect with the electrode 22, avoiding mutual interference between the two electrodes 22 and facilitating installation and disassembly. At the same time, different experiments require different electrodes 22. By setting the conductive rod 21 and the electrode 22 to be detachable and connected, it is convenient to replace different electrodes 22.

[0037] In one embodiment, see Figure 2 and Figure 3 The conductive rod 21 has a threaded outer periphery at one end located in the container 1, and the electrode 22 has a second threaded hole, and the conductive rod 21 is threadedly connected to the second threaded hole. The threaded connection between the conductive rod 21 and the electrode 22 achieves the purpose of detachability, which is convenient and quick.

[0038] In one embodiment, see Figure 2 and Figure 3 A sealing member is further provided between the conductive rod 21 and the mounting channel 41 so that the conductive rod 21 is sealed and matched with the side wall of the mounting channel 41 .

[0039] During the experiment, fluorinated silicone oil is injected into the container 1. In order to prevent the fluorinated silicone oil from leaking from the gap between the mounting channel 41 and the conductive rod 21, in this embodiment, a sealing member is further provided between the conductive rod 21 and the mounting channel 41. By providing the sealing member, a better sealing effect can be achieved to prevent the leakage of fluorinated silicone oil.

[0040] In one embodiment, see Figure 2 and Figure 3 The sealing member includes two sealing rings 3, which are arranged at opposite ends of the mounting channel 41. The inner side of the sealing ring 3 abuts against the circumference of the conductive rod 21, so that the conductive rod 21 and the mounting channel 41 are sealed together, wherein the first threaded hole 42 is located between the two sealing rings 3.

[0041] In this embodiment, the side wall of the mounting channel 41 is provided with two mounting grooves, the mounting groove is arranged in an annular shape, and the two mounting grooves are respectively located at opposite ends of the mounting channel 41, and the mounting groove is adapted to the sealing ring 3, the sealing ring 3 is installed in the mounting groove, and the sealing ring 3 partially extends into the mounting channel 41 and abuts against the circumference of the conductive rod 21, thereby achieving a sealing effect, and the provision of two sealing rings 3 can further improve the sealing performance, and at the same time, a small amount of fluorinated silicone oil can be input into the gap between the two sealing rings 3, which can serve the purpose of lubricating the conductive rod 21, so that the sliding of the conductive rod 21 is smoother.

[0042] In one embodiment, see Figure 2 and Figure 3 A third threaded hole 211 is provided on the end surface of one end of the conductive rod 21 located outside the container 1 , and the third threaded hole 211 is used to connect to a wiring terminal.

[0043] In this embodiment, the end of the conductive rod 21 located outside the container 1 needs to be electrically connected to an external power supply. In order to facilitate the connection, a third threaded hole 211 is provided on the end face of the conductive rod 21 located outside the container 1. The third threaded hole 211 is adapted to the wiring terminal of the external power supply, so that the wiring terminal can be threadedly connected to the third threaded hole 211. This arrangement facilitates connection and fixation.

[0044] In one embodiment, the electrode 22 is one of a needle electrode 22, a plate electrode 22, and a ball electrode 22. It should be noted that the two electrodes 22 can be of the same model or different models, and can be set according to specific circumstances.

[0045] In one embodiment, see Figure 2 The upper end of the container 1 is provided with a sampling port connected to the interior thereof; the self-extinguishing fluorinated silicone oil insulation and aging experimental device also includes a valve 7, which is provided at the sampling port.

[0046] In this embodiment, during insulation and aging, gas will be generated in the container 1. In order to facilitate the collection of the gas generated in the experiment, a sampling port connected to the interior of the container 1 is provided at the upper end of the container 1. The valve 7 is provided at the sampling port. The valve 7 can control the opening and closing of the sampling port and is also convenient for connection with the gas sampling bag.

[0047] In one embodiment, see Figure 1 and Figure 2The container 1 includes a tank body 11 and an upper cover 12. The upper end of the tank body 11 is open, and the upper cover 12 is provided at the open end of the tank body 11. The upper cover 12 is detachably connected to the tank body 11, wherein the sampling port is provided on the upper cover 12.

[0048] In this embodiment, the tank body 11 is generally cylindrical, and the upper cover 12 is generally conical. The diameter of the lower end of the upper cover 12 is adapted to the diameter of the tank body 11. The upper end of the tank body 11 and the lower end of the upper cover 12 are both provided with flanges, and the flanges are provided with multiple through holes. The container 1 also includes multiple screw connectors, and the multiple screw connectors correspond one-to-one to the multiple through holes. Each of the screw connectors is passed through the through hole to connect the tank body 11 and the upper cover 12.

[0049] In this embodiment, a rubber ring is further provided between the tank body 11 and the upper cover 12 to provide a seal.

[0050] In an embodiment, the self-extinguishing fluorinated silicone oil insulation and aging test device also includes a protective sleeve, which is arranged on the outer periphery of the conductive rod 21 located outside the container 1. The protective sleeve is in the shape of a bellows and can be telescopically arranged along its axial direction. One end of the protective sleeve is fixedly connected to one end of the conductive rod 21, and the other end of the protective sleeve is connected to the end of the mounting part. The protective sleeve is an insulating protective sleeve. Such a setting can cover the conductive rod 21 exposed outside the container 1, avoid safety accidents, and improve the safety of the device.

[0051] In this embodiment, the side wall of the container 1 is penetrated by two through holes, and the two through holes are arranged opposite to each other. The self-extinguishing fluorinated silicone oil insulation and aging experimental device also includes two mounting components, and the two mounting components correspond to the two through holes one by one. Each mounting component includes a mounting seat 4, a nut 5 and a gasket 6. The mounting seat 4 includes a mounting section and a connecting section connected in sequence. The diameter of the mounting section is larger than the diameter of the connecting section. The diameter of the connecting section is adapted to the through hole. The outer periphery of the connecting section is provided with a thread, and the connecting section is passed through the The through hole is passed through the through hole so that one end thereof extends into the container 1, and the end face of the mounting section abuts against the side wall of the container 1, the gasket 6 is sleeved on the outer periphery of the connecting section and abuts against the inner wall of the container 1, the nut 5 is threadedly connected to the connecting section, thereby fixing the mounting seat 4 on the tank body 11, and the gasket 6 can serve as a better sealing seat, the mounting channel 41 and the first threaded hole 42 are both provided on the mounting seat 4, and the mounting seat 4 constitutes the mounting portion. Such an arrangement facilitates the processing of various components and reduces costs.

[0052] In order to better understand the present invention, the following Figures 1 to 3The technical solution of the utility model is described in detail:

[0053] Step 1: Clean the container 1, insert the conductive rod 21 into the installation channel 41, and extend one end of the conductive rod 21 into the tank body 11. Install the ball electrode 22 on one end of the conductive rod 21, and adjust the distance between the two ball electrodes 22 by pulling the conductive rod 21 to a distance of 2.5 mm.

[0054] Step 2: Fix the conductive rod 21 by turning the locking screw 8;

[0055] Step 3: Add the fluorinated silicone oil for the experiment into the tank body 11, connect the tank body 11 to the upper cover 12, and then add oil from the sampling port through a syringe until it is full, and close the valve 7;

[0056] Step 4: Connect the conductive rod 21 to the power frequency voltage breakdown circuit;

[0057] Step 5: Using a step-by-step pressurization method, gradually pressurize at a rate of 1 kV / 5 s until breakdown occurs, and obtain the corresponding breakdown voltage after each breakdown;

[0058] Step 6: After repeating step 3 several times, disconnect the experimental circuit, connect the gas sampling bag to the sampling port, open valve 7 to collect the gas generated in the experiment;

[0059] Step 7: After the gas collection is completed, a portion of the post-experimental oil product is collected from the sampling port using a syringe;

[0060] Step 8: Conduct relevant detection and analysis on the collected gas and liquid to draw experimental conclusions.

[0061] The device in this application features a rational, simple, and multifunctional design. It can be used to conduct breakdown voltage tests and collect gases generated during tests of the insulation and electrical aging characteristics of fluorinated silicone oils. The device is suitable for conducting electrical insulation performance tests on various insulating oils, facilitating subsequent detection of related gases or liquids, and has promising application prospects in related scientific research experiments.

[0062] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A self-extinguishing fluorinated silicone oil insulation and aging test device, characterized in that: It includes: A container, wherein the side wall of the container is convexly formed with two mounting portions arranged opposite to each other, the mounting portions being provided with a mounting channel communicating with the interior of the container and a first threaded hole communicating with the mounting channel; Two electrode assemblies are slidably mounted in the mounting channel and one end of each electrode assembly extends into the container; and two locking screws, threadedly connected to the two first threaded holes in a one-to-one correspondence, so that after the electrode assembly slides to a set position, one end of the locking screw abuts against the electrode assembly to fix the electrode assembly; The electrode assembly includes a conductive rod and an electrode, wherein the conductive rod is adapted to the mounting channel, the conductive rod is slidably mounted in the mounting channel, and both ends of the conductive rod extend out of the mounting channel, and the electrode is provided at one end of the conductive rod located in the container; A sealing member is further provided between the conductive rod and the mounting channel, so that the conductive rod and the side wall of the mounting channel are sealed and matched; The sealing member includes two sealing rings, which are arranged at opposite ends of the mounting channel. The inner sides of the sealing rings abut against the circumference of the conductive rod so that the conductive rod and the mounting channel are sealed. The first threaded hole is located between the two sealing rings. The upper end of the container is provided with a sampling port connected to the interior thereof; The self-extinguishing fluorinated silicone oil insulation and aging experimental device further comprises a valve, which is arranged at the sampling port; The container includes a tank body and an upper cover, the upper end of the tank body is open, the upper cover is provided at the open end of the tank body, the upper cover and the tank body are detachably connected, the tank body is generally cylindrical, and the upper cover is generally conical, wherein the sampling port is provided on the upper cover.

2. The self-extinguishing fluorinated silicone oil insulation and aging test device according to claim 1, characterized in that: The conductive rod and the electrode are detachably connected.

3. The self-extinguishing fluorinated silicone oil insulation and aging test device according to claim 2, characterized in that: The outer periphery of one end of the conductive rod located in the container is provided with a thread, the electrode is provided with a second threaded hole, and the conductive rod is threadedly connected to the second threaded hole.

4. The self-extinguishing fluorinated silicone oil insulation and aging test device according to claim 1, characterized in that: A third threaded hole is provided on the end surface of one end of the conductive rod located outside the container, and the third threaded hole is used to be connected to a wiring terminal.

5. The self-extinguishing fluorinated silicone oil insulation and aging test device according to claim 1, characterized in that: The electrode is one of a needle electrode, a plate electrode and a ball electrode.

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