Transformer oil gas film separation on-line fault monitoring device

CN122882340APending Publication Date: 2026-10-09JIANGSU SAIRUIMAIKE NEW MATERIAL CO LTD
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Patent Information

Application Number
CN202611401191.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-09-10
Publication Date
2026-10-09

AI Technical Summary

Technical Problem

[0005]针对现有技术的不足,本发明提供了变压器油油气膜分离在线故障监测装置,解决了操作烦琐、分离效率低、在线监测时间长、监测不安全的问题

Benefits of technology

1.本发明通过设置微孔陶瓷膜机构,能够利用陶瓷膜错流过滤模式实现变压器油与故障气体快速分离,区别于传统高分子渗透膜,依托陶瓷膜管壁微孔的透气截油特性,故障气体可在分压差作用下快速析出,大幅缩短油气平衡耗时,无需复杂活塞真空预处理流程,降低设备操作复杂度,提升油气分离效率,克服传统技术响应慢、操作步骤繁杂的缺陷,适配变压器长期不间断在线监测工作需求。

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Abstract

The present application relates to transformer oil gas membrane separation online fault monitoring device belongs to the technical field of separation, including transformer, the transformer side is equipped with gear pump, the gear pump side is equipped with spectrometer, the spectrometer side is equipped with moisture filter, the moisture filter side is equipped with impurity filter, the impurity filter side is equipped with MOF material mechanism, the present application is through the setting microporous ceramic membrane mechanism, can utilize ceramic membrane cross flow filtration mode realizes transformer oil and fault gas rapid separation, different from traditional polymer permeable membrane, relying on the air permeation oil interception characteristics of ceramic membrane tube wall micropore, fault gas can be quickly separated under the action of partial pressure difference, greatly shorten the oil gas balance time consumption, without complex piston vacuum pretreatment process, reduce the equipment operation complexity, improve the oil gas separation efficiency, overcome the defects of traditional technology slow response, operation step is complicated, adapts the transformer long-term uninterrupted online monitoring work demand.
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Description

Technical Field

[0001] This invention relates to the field of separation technology, specifically to an online fault monitoring device for transformer oil gas film separation. Background Technology

[0002] The online fault monitoring device for transformer oil gas film separation is a device used to detect the content of fault gases in the oil of various transformers (high / low voltage) and to perform quantitative analysis of characteristic fault gases in transformer insulating oil.

[0003] Early oil-gas separation methods mainly included Doppler degassing and partial degassing. These methods could achieve complete degassing, but required a piston for vacuum treatment, making them cumbersome and unsuitable for online monitoring. In recent years, the polymer membrane dissolution-permeation oil-gas separation method has been widely studied. This method has a simple structure and stable performance. Currently, commonly used polymer membranes include perfluoroethylene propylene (FEP) membranes, polytetrafluoroethylene capillary membranes (GP100), hollow fiber composite membranes, and microporous polytetrafluoroethylene membranes. However, these organic polymer membranes also generally suffer from low gas permeability and long online monitoring response times. The oil-gas equilibrium time often lasts for more than ten hours or even several days, which cannot well meet the requirements of online monitoring.

[0004] During the testing process, transformer oil may be pressurized and pass through the oil-gas film into the gas path, causing damage to the monitoring instrument. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an online fault monitoring device for transformer oil vapor film separation, which solves the problems of cumbersome operation, low separation efficiency, long online monitoring time, and unsafe monitoring.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an online fault monitoring device for transformer oil-gas film separation, comprising a transformer, a gear pump on one side of the transformer, a spectrometer on one side of the gear pump, a moisture filter on one side of the spectrometer, an impurity filter on one side of the moisture filter, a MOF material mechanism on one side of the impurity filter, an acetylene sensor on one side of the MOF material mechanism, a microporous ceramic membrane mechanism on one side of the acetylene sensor, a gas pump on one side of the microporous ceramic membrane mechanism, and an argon gas cylinder on one side of the gas pump; The microporous ceramic membrane structure has a cuboid on its outer side; The cube is equipped with an anti-overflow mechanism. The microporous ceramic membrane mechanism has end caps fixedly installed at both opposite ends; The microporous ceramic membrane mechanism includes a housing, a membrane tube is provided inside the housing, and a transmission channel is provided on the inner wall of the membrane tube; The anti-overflow mechanism includes a slider and an inclined body. An extension body is fixedly installed on one side of the inclined body, and guide slide rods are rotatably installed on both opposite sides of the inclined body.

[0007] Furthermore, the end has a buffer cavity, a conveying channel, and a connecting conveying channel inside. The conveying channel is connected to the buffer cavity and the connecting conveying channel, and the buffer cavity is in communication with the inside of the membrane tube.

[0008] Furthermore, a connecting end is fixedly installed on the outer side of the outer shell, and a conveying port is opened inside the connecting end. The conveying port is connected to the inside of the transmission channel, and the transmission channel is connected to the membrane tube.

[0009] Furthermore, a conveying port is provided at the upper end of the cube, a fixing body is fixedly installed on the side of the cube away from the conveying port, and an air cavity is provided in the cube, which is connected to the conveying port.

[0010] Furthermore, a movable channel is provided inside the fixed body, which is connected to the interior of the air cavity, and two symmetrically distributed operating channels are provided inside the fixed body.

[0011] Furthermore, the fixed body has an inclined channel inside, the bottom of the running channel has an inclined surface, the inclined channel is connected to the running channel, the upper end of the running channel has a movable small opening, and the running channel is connected to the air cavity through the movable small opening.

[0012] Furthermore, the upper half of the moving track has two symmetrically distributed inclined grooves on its inner wall, and guide inclined grooves are formed on the inner walls of the two sides of the inclined grooves. The inner wall of the guide inclined groove is slidably connected to one end of the guide slide rod.

[0013] Furthermore, a sliding rod is fixedly installed on the upper side of the slider, and a lifting cube is fixedly installed on the upper end of the sliding rod. A lifting groove is opened on the upper end of the lifting cube. A fixed long cylinder is slidably connected to the outside of the sliding rod, and the outside of the fixed long cylinder is fixedly connected to the inner wall of the running track.

[0014] Furthermore, a spring is fixedly installed at the lower end of the fixed long cylinder, and the end of the spring away from the fixed long cylinder is fixedly connected to the upper surface of the slider, and the spring is sleeved on the outside of the slider.

[0015] Furthermore, the lifting groove is rotatably connected to the two sides of the lifting groove, a lifting body is fixedly installed at the upper end of the inclined body, a lifting groove is opened at the upper end of the lifting body, a rotating shaft is rotatably installed on the inner walls of the lifting groove on both sides, and a connecting rod is rotatably installed on the outer side of the rotating shaft and the rotating rod.

[0016] Compared with the prior art, the present invention provides an online fault monitoring device for transformer oil gas film separation, which has the following beneficial effects: 1. This invention, by setting a microporous ceramic membrane mechanism, can achieve rapid separation of transformer oil and fault gas using the cross-flow filtration mode of the ceramic membrane. Unlike traditional polymer permeation membranes, relying on the gas permeability and oil interception characteristics of the micropores in the ceramic membrane tube wall, fault gas can be rapidly precipitated under the action of partial pressure difference, which greatly shortens the oil-gas balance time, eliminates the need for a complex piston vacuum pretreatment process, reduces the complexity of equipment operation, improves oil-gas separation efficiency, overcomes the defects of slow response and complicated operation steps of traditional technology, and is suitable for the long-term uninterrupted online monitoring of transformers.

[0017] 2. By designing the microporous ceramic membrane mechanism, when the membrane tube fails or breaks, the change in negative pressure inside the gas chamber triggers a complete set of mechanical linkage actions. The transformer oil rises, driving the slider, spring, and inclined body assembly to adjust the flow cross section, releasing the excessively high negative pressure inside the gas chamber, preventing the transformer oil from crossing the oil-gas film and invading the gas chamber pipeline. This mechanically blocks the flow of oil to the downstream detection device, avoiding the risk of oil entering the spectrometer and sensor and causing instrument burnout or damage, thus solving the problem of insufficient equipment safety during the monitoring process.

[0018] 3. This invention, by setting up inclined channels, running channels, and moving channels with PTFE coatings on the inner walls, can utilize the low surface energy and oleophobic properties of this material to significantly reduce transformer oil residue on the inner walls of the channels. When the negative pressure decreases and the oil falls back, the transformer oil in the channels can flow back completely along the inclined surfaces, reducing the problems of delayed gas release and oil accumulation and blockage caused by oil retention. This ensures smooth and stable oil and gas flow channels, continuously guarantees gas permeation and transfer efficiency, further shortens the response cycle of online monitoring, and improves the reliability of device operation.

[0019] 4. This invention uses an argon gas cylinder and a gas pump to form a pre-purge circuit, which can complete the overall purging of all oil circuits, gas chambers, pipelines, and detection units before each monitoring start-up. This thoroughly removes residual air and faulty gases left over from the previous test, eliminating the interference of background gases on the detection results. After purging, a closed-loop gas circuit is formed, and the gas is enriched and periodically detected. There is no need to disassemble the pipeline for manual cleaning, reducing human intervention and balancing detection accuracy with the safety and stability of the device during long-term online continuous operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the gear pump structure of the present invention; Figure 2 This is a schematic diagram of the spectrometer structure of the present invention; Figure 3 This is a schematic diagram of the moisture filter structure of the present invention; Figure 4 This is a schematic diagram of the MOF material structure of the present invention; Figure 5 This is a schematic diagram of the acetylene sensor structure of the present invention; Figure 6 This is a schematic diagram of the microporous ceramic membrane structure of the present invention; Figure 7 This is a schematic diagram of the transformer structure of the present invention; Figure 8 This is a schematic diagram of the air pump structure of the present invention; Figure 9 This is a schematic diagram of the argon cylinder structure of the present invention; Figure 10 This is a schematic diagram of the cross-sectional structure of the outer shell of the present invention; Figure 11 This is a schematic diagram of the cuboid structure of the present invention; Figure 12 This is a schematic diagram of the cross-sectional structure of the cuboid of the present invention; Figure 13 This is a schematic diagram of the moving track structure of the present invention; Figure 14 For the present invention Figure 13 Enlarged schematic diagram of the structure at point A in the diagram; Figure 15 For the present invention Figure 13 Enlarged schematic diagram of the structure at point B in the diagram; Figure 16 This is a schematic diagram of the fixed elongated cylinder structure of the present invention; Figure 17 This is a schematic diagram of the fixed elongated cylinder structure of the present invention; Figure 18 For the present invention Figure 17 Enlarged schematic diagram of the structure at point C; Figure 19 This is a flowchart of the present invention.

[0021] In the diagram: 1. Gear pump; 2. Spectrometer; 3. Moisture filter; 4. Impurity filter; 5. MOF material structure; 6. Acetylene sensor; 7. Microporous ceramic membrane structure; 71. Connecting end; 72. Membrane tube; 73. Transport channel; 74. Delivery port; 79. Outer shell; 8. End; 81. Conveyor; 82. Buffer chamber; 83. Connecting conveyor; 9. Transformer; 11. Air pump; 13. Argon gas cylinder; 15. Cube; 151. Fixed body; 1511. Air cavity; 152. Conveying port; 153. Inclined surface; 154. Inclined track; 155. Long moving track; 156. Long running track; 1561. Small moving opening; 157. Inclined chute; 158. Guide chute; 16. Anti-overflow mechanism; 161. Inclined body; 162. Extension body; 163. Lifting body; 1631. Rotating shaft; 1632. Lifting groove; 164. Connecting rod; 165. Lifting cube; 1651. Rotating rod; 1652. Lifting groove; 166. Fixed long cylinder; 167. Slide rod; 168. Spring; 169. Sliding block; 1610. Guide slide rod. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 19 The transformer oil-gas film separation online fault monitoring device in this embodiment includes a transformer 9, which has an oil tank inside. The oil tank mainly contains fault gas (mainly C2H2), which is input into the microporous ceramic membrane mechanism 7 through a gear pump 1 and then circulated out. A gear pump 1 is provided on one side of the transformer 9. There are several gear pumps 1, which can be appropriately increased or decreased according to the actual use. A spectrometer 2 is provided on one side of the gear pump 1. The spectrometer 2 includes a photothermal spectrometer and a photoacoustic spectrometer. A moisture filter 3 is provided on one side of the spectrometer 2. An impurity filter 4 is provided on one side of the moisture filter 3. A MOF material mechanism 5 is provided on one side of the impurity filter 4. An acetylene sensor 6 is provided on one side of the MOF material mechanism 5. A microporous ceramic membrane mechanism 7 is provided on one side of the acetylene sensor 6. A gas pump 11 is provided on one side of the microporous ceramic membrane mechanism 7, and an argon gas cylinder 13 is provided on the other side of the gas pump 11. A cuboid 15 is provided on the outer side of the microporous ceramic membrane mechanism 7. A conveying port 152 is provided at the upper end of the cuboid 15. The conveying port 152 is connected to the gas pump 11 through a pipeline. There are several gas pumps 11, which can be appropriately increased or decreased according to the actual use. A fixing body 151 is fixedly installed on the side of the cuboid 15 away from the conveying port 152. The end of the fixing body 151 away from the cuboid 15 is fixedly connected to the connecting end 71. The interior of the fixing body 151... An inclined channel 154 is provided, which is connected to the running long channel 156. A movable long channel 155 is provided inside the fixed body 151. An oil-gas film is fixedly installed inside the movable long channel 155. The oil-gas film is installed at a position higher than the lower end of the fixed long cylinder 166. Therefore, even if the transformer oil rises, it will not come into contact with the oil-gas film. The oil-gas film is existing technology and will not be described in detail here. It is not shown in the figure. Two symmetrically distributed inclined grooves 157 are provided on the inner wall of the upper half of the movable long channel 155. Guide inclined grooves 158 are provided on the inner walls of the inclined grooves 157 on both sides. The inner wall of the guide groove 158 is slidably connected to one end of the guide slide rod 1610. The guide groove 158 can provide a stable effect for the movement of the inclined body 161. The two inclined bodies 161 fit together, and even if there is a certain gap between them, it will not affect the pressure of the negative pressure generated by the air pump 11. The moving channel 155 is connected to the inside of the air chamber 1511. Two symmetrically distributed running channels 156 are opened inside the fixed body 151. The upper end of the running channel 156 is provided with a small moving opening 1561. The operating channel 156 is connected to the air chamber 1511 via a movable small opening 1561. An inclined surface 153 is provided at the bottom of the operating channel 156. When the transformer oil rises due to negative pressure, it enters the inclined channel 154 and then enters the operating channel 156. When the negative pressure decreases, the transformer oil descends, and the inclined surface 153 ensures that all the transformer oil can return. PTFE is fixedly installed on the surfaces of the inclined surface 153, the operating channel 156, the inclined channel 154, and the movable channel 155. Polytetrafluoroethylene (PTFE) is used to further reduce the residue in transformer oil. PTFE is an existing technology and will not be described in detail here. The cuboid 15 has a gas chamber 1511, which is connected to the conveying port 152. Therefore, the gas inside the transformer oil enters the gas chamber 1511 through the moving channel 155 and the oil-gas film, and then enters the pipeline through the conveying port 152. The cuboid 15 is equipped with an anti-overflow mechanism 16. The microporous ceramic membrane mechanism 7 has end heads 8 fixedly installed at both opposite ends, and both end heads 8 are connected to the gear pump 1. The end 8 has a buffer cavity 82, a conveying channel 81 and a connecting conveying channel 83 inside. The conveying channel 81 is connected to the buffer cavity 82 and the connecting conveying channel 83. The buffer cavity 82 is connected to the membrane tube 72. The microporous ceramic membrane mechanism 7 includes a shell 79. A connecting end 71 is fixedly installed on the outside of the shell 79. A conveying port 74 is opened inside the connecting end 71. The conveying port 74 is connected to the conveying channel 73. The membrane tube 72 is opened inside the shell 79. The inner wall of the membrane tube 72 is provided with a transmission channel 73, which is connected to the membrane tube 72. The anti-overflow mechanism 16 includes a slider 169 and an inclined body 161. A lifting body 163 is fixedly installed on the upper end of the inclined body 161. A lifting groove 1632 is provided on the upper end of the lifting body 163. A rotating shaft 1631 is rotatably installed on the lifting groove 1632 relative to the inner walls on both sides. A connecting rod 164 is rotatably installed on the outer side of the rotating shaft 1631 and the rotating rod 1651. A sliding rod 167 is fixedly installed on the upper side of the slider 169. A lifting cube 165 is fixedly installed on the upper end of the sliding rod 167. A lifting groove 1652 is provided on the upper end of the lifting cube 165. The lifting groove 1652 is rotatably connected to the rotating rod 1651 on both sides. The outer side of the slide rod 167 is slidably connected to the fixed long cylinder 166. The lower end of the fixed long cylinder 166 is fixedly installed with a spring 168. The end of the spring 168 away from the fixed long cylinder 166 is fixedly connected to the upper surface of the slider 169. The spring 168 is sleeved on the outer side of the slide rod 167. The outer side of the fixed long cylinder 166 is fixedly connected to the inner wall of the running track 156. An extension body 162 is fixedly installed on one side of the inclined body 161. Guide slide rods 1610 are rotatably installed on both opposite sides of the inclined body 161. Therefore, when the negative pressure inside the air chamber 1511 increases, the transformer oil enters the moving long channel 155 and simultaneously enters the inclined channel 154, then enters the running long channel 156. As the transformer oil continues to rise, it pushes against the slider 169, the spring 168 begins to contract, and the slide rod 167 begins to slide upward inside the fixed long cylinder 166. At this time, the lifting cube 165 moves upward, the connecting rod 164 rotates and pulls the lifting body 163, which in turn pulls the inclined body 161, guiding the slide rod 169 upward. 610 moves with the inclined body 161, and the guide slide rod 1610 slides inside the guide inclined groove 158. At this time, the inclined body 161 moves obliquely upward. At this time, the two inclined bodies 161 and the extension body 162 are no longer in contact. At this time, the flow cross section of the channel connecting the moving long channel 155 and the air cavity 1511 is expanded. At this time, the negative pressure can be reduced, and the transformer oil drops. Therefore, even if the membrane tube 72 fails, the transformer oil will not come into contact with the oil-gas film here or enter the air cavity 1511 and cause damage to the detection instrument. Moreover, the gas can be discharged stably. When the gas monitoring is officially started, the pre-processing operation of the whole system is first completed. The transformer under test 9 is connected to the whole set of oil and gas pipelines, microporous ceramic membrane mechanism 7, various control valves, moisture filter 3, impurity filter 4 and other filters that are required. Those skilled in the art can add or remove filters according to the actual use. At the same time, the back-end photoacoustic spectrometer or gas chromatograph detection unit completes the pipeline connection. All valves are initially in the closed state. Then, the argon cylinder 13 is turned on and the matching gas pump 11 is started. Argon is used as the purging carrier gas to purge along the gas pipeline and carry out a comprehensive purging operation on the entire gas pipeline. The purging coverage includes the inside of the microporous ceramic membrane mechanism 7, the moving long channel 155, the gas chamber 1511, the gas pump 11 cavity, the pipeline joint, the moisture filter 3, the impurity filter 4, and the gas flow channel inside the detection instrument. The purpose of purging is to completely remove the ambient air remaining inside the pipeline cavity, and at the same time remove the fault characteristic gas of transformer 9 that remained inside the pipeline after the previous round of testing, and eliminate the interference of gas on subsequent quantitative test results. After the purging process has been completed for a preset time, those skilled in the art can increase or decrease the purging time according to the pipeline length. At this time, close the control valves of argon cylinder 13 and the corresponding purging pipeline to switch the previously open gas path to a closed state, so that the gas circulation pipeline forms a complete closed and recirculating gas passage. After the pretreatment stage, the transformer oil circulation stage begins. At this time, the feed control valve is opened, and the transformer oil to be tested, containing dissolved gases such as acetylene and other fault-related gases, flows out from inside the device under test and enters the oil phase circuit. Gear pump 1 is then activated, applying pressure to the transformer oil and pressurizing it to deliver it into the microporous ceramic membrane mechanism 7, specifically into the membrane tube 72. The outer shell 79 of the microporous ceramic membrane mechanism 7 is made of aluminum alloy. The end caps 8 at both ends of the assembly are fastened to the outer shell 79 using bolts and nuts. Oil-resistant and corrosion-resistant rubber is fitted at the joint between the end caps 8 and the outer shell 79 to achieve a seal, thus isolating the oil chamber space inside the membrane tube 72 from the gas chamber space outside the membrane tube 72, preventing oil from entering the gas chamber or gas from entering the oil circuit. The transformer oil enters each membrane tube 72. After passing through the internal channel, the oil flows at high speed along the direction of the membrane tube 72, realizing the cross-flow filtration operation mode. The transformer oil itself has a large molecular size and cannot penetrate the microporous structure on the wall of the membrane tube 72. It is completely trapped in the inner flow channel of the membrane tube 72. However, the small molecules of fault characteristic gas dissolved in the transformer oil can pass through the dense micropores on the wall of the membrane tube 72 under the drive of the partial pressure difference between the oil phase and the gas phase. They can permeate and diffuse from the oil side into the outer sealed gas chamber formed by the isolation between the outer shell 79 of the microporous ceramic membrane mechanism 7 and the outer wall of the membrane tube 72. Most of the transformer oil will not pass through the wall of the membrane tube 72 and will flow out from the oil outlet of the microporous ceramic membrane mechanism 7. It will flow back to the inside of the transformer equipment under test along the circulation pipeline and continue to circulate. This continuously transports new oil containing dissolved fault gas from inside the transformer 9 to the inside of the membrane tube 72.

[0024] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

Claims

1. A transformer oil-gas film separation online fault monitoring device, comprising a transformer (9), characterized in that: A gear pump (1) is provided on one side of the transformer (9), a spectrometer (2) is provided on one side of the gear pump (1), a moisture filter (3) is provided on one side of the spectrometer (2), an impurity filter (4) is provided on one side of the moisture filter (3), a MOF material mechanism (5) is provided on one side of the impurity filter (4), an acetylene sensor (6) is provided on one side of the MOF material mechanism (5), a microporous ceramic membrane mechanism (7) is provided on one side of the acetylene sensor (6), a gas pump (11) is provided on one side of the microporous ceramic membrane mechanism (7), and an argon gas cylinder (13) is provided on one side of the gas pump (11). The microporous ceramic membrane structure (7) has a cuboid (15) on its outer side; The cube (15) is provided with an anti-overflow mechanism (16); The microporous ceramic membrane mechanism (7) has end caps (8) fixedly installed at both opposite ends; The microporous ceramic membrane mechanism (7) includes a housing (79), a membrane tube (72) is provided inside the housing (79), and a transmission channel (73) is provided on the inner wall of the membrane tube (72). The anti-overflow mechanism (16) includes a slider (169) and an inclined body (161). An extension body (162) is fixedly installed on one side of the inclined body (161), and guide slide rods (1610) are rotatably installed on both opposite sides of the inclined body (161).

2. The online fault monitoring device for transformer oil vapor film separation according to claim 1, characterized in that: The end (8) has a buffer cavity (82), a conveying channel (81) and a connecting conveying channel (83) inside. The conveying channel (81) is connected to the buffer cavity (82) and the connecting conveying channel (83), and the buffer cavity (82) is connected to the membrane tube (72).

3. The online fault monitoring device for transformer oil vapor film separation according to claim 1, characterized in that: A connecting end (71) is fixedly installed on the outside of the outer shell (79). A conveying port (74) is opened inside the connecting end (71). The conveying port (74) is connected to the inside of the transmission channel (73). The transmission channel (73) is connected to the membrane tube (72).

4. The online fault monitoring device for transformer oil vapor film separation according to claim 1, characterized in that: The upper end of the cube (15) is provided with a conveying port (152). A fixing body (151) is fixedly installed on the side of the cube (15) away from the conveying port (152). The cube (15) is provided with an air cavity (1511), which is connected to the conveying port (152).

5. The online fault monitoring device for transformer oil vapor film separation according to claim 4, characterized in that: The fixed body (151) has a movable channel (155) inside, which is connected to the air cavity (1511). The fixed body (151) has two symmetrically distributed running channels (156) inside.

6. The online fault monitoring device for transformer oil vapor film separation according to claim 5, characterized in that: The fixed body (151) has an inclined channel (154) inside, and the running channel (156) has an inclined surface (153) at the bottom. The inclined channel (154) is connected to the running channel (156). The running channel (156) has a movable opening (1561) at the upper end. The running channel (156) is connected to the air chamber (1511) through the movable opening (1561).

7. The online fault monitoring device for transformer oil vapor film separation according to claim 5, characterized in that: The upper half of the movable track (155) has two symmetrically distributed inclined grooves (157) on its inner wall. The inclined grooves (157) have guide inclined grooves (158) on their opposite inner walls. The inner wall of the guide inclined grooves (158) is slidably connected to one end of the guide slide rod (1610).

8. The online fault monitoring device for transformer oil vapor film separation according to claim 5, characterized in that: A slide rod (167) is fixedly installed on the upper side of the slider (169). A lifting cube (165) is fixedly installed on the upper end of the slide rod (167). A lifting groove (1652) is opened on the upper end of the lifting cube (165). A fixed long cylinder (166) is slidably connected to the outside of the slide rod (167). The outside of the fixed long cylinder (166) is fixedly connected to the inner wall of the running track (156).

9. The online fault monitoring device for transformer oil vapor film separation according to claim 8, characterized in that: A spring (168) is fixedly installed at the lower end of the fixed long cylinder (166). The end of the spring (168) away from the fixed long cylinder (166) is fixedly connected to the upper surface of the slider (169). The spring (168) is sleeved on the outside of the slide rod (167).

10. The online fault monitoring device for transformer oil vapor film separation according to claim 8, characterized in that: The lifting groove (1652) is rotatably connected to the rotating rod (1651) on both sides. The upper end of the inclined body (161) is fixedly installed with a lifting body (163). The upper end of the lifting body (163) is provided with a lifting groove (1632). The lifting groove (1632) is rotatably installed with a rotating shaft (1631) on both sides of the inner wall. The outer side of the rotating shaft (1631) and the rotating rod (1651) are rotatably installed with a connecting rod (164).